National Weather Service United States Department of Commerce

Snow Across the Great Lakes, Central Appalachians, and Northeast; Unsettled Weather in the West

Light to moderate snow will continue into Saturday over the Great Lakes, Central Appalachians, and Northeast. This weekend into next week, a series of atmospheric rivers will bring gusty winds, periods of heavy rain, and mountain snow to northern California and the Pacific Northwest. Colder temperatures are in store for the weekend from the Great Lakes to East Coast. Read More >

 

September  2018 was the wettest September at Jackson with a total of 9.17 inches

which bested the previous wettest September by over an inch and 1/3rd. London's

total was missing for the month due to a precipitation sensor outage. September 2018

was the warmest September at London with a temperature of 73.6 degrees...over one degree

warmer than the previous record. Jackson saw September 2018 as its 3rd warmest.

The following are the September climate summaries for each location as well as the

September Local Climatological Data reports for Jackson and London:

 

Jackson Kentucky data:

 

...THE JACKSON KY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1981 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              96   09/03/2011
 LOW               34   09/24/1989
HIGHEST            92   09/03        89       3       86  09/27
                                                          09/25
                                                          09/24
LOWEST             54   09/28        42      12       47  09/07
AVG. MAXIMUM     80.7              78.0     2.7     76.9
AVG. MINIMUM     65.6              58.2     7.4     58.9
MEAN             73.2              68.1     5.1     67.9
DAYS MAX >= 90      3               1.5     1.5        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.82   1988
 MINIMUM         0.51   2005
TOTALS           9.17R             3.46    5.71     3.33
DAILY AVG.       0.31              0.12    0.19     0.11
DAYS >= .01        15               8.4     6.6        9
DAYS >= .10        13               5.7     7.3        5
DAYS >= .50         7               2.2     4.8        1
DAYS >= 1.00        3               1.0     2.0        1
GREATEST
 24 HR. TOTAL    1.88   09/27 TO 09/27              2.18

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   MM
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         0.0               0.0     0.0      0.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0   MM                             0
 24 HR TOTAL      0.0                                0.0

DEGREE_DAYS
HEATING TOTAL       9                50     -41       34
 SINCE 7/1          9                52     -43       34
COOLING TOTAL     263               143     120      134
 SINCE 1/1       1527              1121     406     1136
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              1.1
HIGHEST WIND SPEED/DIRECTION    15/330    DATE  09/18
HIGHEST GUST SPEED/DIRECTION    26/340    DATE  09/18

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           15
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     81

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              8     MIXED PRECIP               0
HEAVY RAIN               11     RAIN                      13
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      21     FOG W/VIS <= 1/4 MILE      9
HAZE                      0

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$

 

PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   JACKSON KY
                                          MONTH:     SEPTEMBER
                                          YEAR:      2018
                                          LATITUDE:   37 35 N
                                          LONGITUDE:  83 19 W

  TEMPERATURE IN F:       :PCPN:    SNOW:  WIND      :SUNSHINE: SKY     :PK WND
================================================================================
1   2   3   4   5  6A  6B    7    8   9   10  11  12  13   14  15   16   17  18
                                     12Z  AVG MX 2MIN
DY MAX MIN AVG DEP HDD CDD  WTR  SNW DPTH SPD SPD DIR MIN PSBL S-S WX    SPD DR
================================================================================

 1  85  68  77   4   0  12 0.00  0.0    0  2.1 13 320   M    M   2 3      24 320
 2  86  69  78   6   0  13 0.92  0.0    0  0.9 10 230   M    M   2 13     20 210
 3  92  71  82  10   0  17 0.00  0.0    0  1.7  7 120   M    M   0        10 140
 4  91  71  81   9   0  16 0.00  0.0    0  1.0  7 160   M    M   0         9 160
 5  89  74  82  10   0  17 0.00  0.0    0  1.7  6 310   M    M   0        11 160
 6  89  70  80   9   0  15    T  0.0    0  0.6  8  10   M    M   2 13     16 340
 7  86  70  78   7   0  13 0.01  0.0    0  0.5  6 130   M    M   3 3      10 310
 8  83  67  75   4   0  10 0.43  0.0    0  0.8 14 330   M    M   4 13     23 330
 9  84  70  77   7   0  12 0.75  0.0    0  1.7  8 280   M    M   5 13     17 150
10  70  60  65  -5   0   0 0.44  0.0    0  2.8  9 310   M    M  10 1      17 280
11  69  60  65  -5   0   0 0.00  0.0    0  0.6  6 140   M    M  10         9 100
12  82  63  73   3   0   8 0.00  0.0    0  0.1  7 310   M    M   6 12      9 300
13  89  68  79  10   0  14 0.00  0.0    0  0.5  6 350   M    M   1 1      12 350
14  88  71  80  11   0  15 0.00  0.0    0  0.3  5  90   M    M   1 1      11  70
15  85  70  78  10   0  13 0.02  0.0    0  0.5  8 110   M    M   2        19  80
16  76  68  72   4   0   7 0.45  0.0    0  1.0  6  60   M    M   4 1      25  70
17  73  68  71   3   0   6 0.66  0.0    0  2.3  9 320   M    M   6 12     15 300
18  86  68  77  10   0  12 0.10  0.0    0  1.3 15 330   M    M   4 12     26 340
19  88  67  78  11   0  13 0.00  0.0    0  1.2  7 300   M    M   1 1      11 290
20  90  69  80  13   0  15 0.00  0.0    0  1.4  6 310   M    M   0 1       9 200
21  86  70  78  12   0  13 0.00  0.0    0  2.1  9 210   M    M   2        20 190
22  73  63  68   2   0   3 1.03  0.0    0  0.5  7 110   M    M   8 12     13 100
23  66  61  64  -1   1   0 1.44  0.0    0  0.3  6 110   M    M   5 12     12 100
24  71  64  68   3   0   3 0.66  0.0    0  2.3 10 150   M    M   4 12     18 130
25  81  66  74   9   0   9 0.11  0.0    0  2.5  8 180   M    M   7 13     17 180
26  73  62  68   4   0   3 0.27  0.0    0  1.0  8 260   M    M   6 13     17 270
27  62  56  59  -5   6   0 1.88  0.0    0  1.1 12 330   M    M   9 12     20 340
28  71  54  63  -1   2   0 0.00  0.0    0  0.4  6 340   M    M   6 12      9 350
29  74  55  65   2   0   0 0.00  0.0    0  0.3  6 120   M    M   2 12     10  70
30  82  56  69   6   0   4 0.00  0.0    0  0.8  7 300   M    M   1        10 270
================================================================================
SM 2420 1969         9 263  9.17     0.0  34.3          M      113
================================================================================
AV 80.7 65.6                               1.1 FASTST   M    M   4    MAX(MPH)
                                 MISC ---->  # 15 330               # 26  340
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2

                                          STATION:  JACKSON KY
                                          MONTH:    SEPTEMBER
                                          YEAR:     2018
                                          LATITUDE:   37 35 N
                                          LONGITUDE:  83 19 W

[TEMPERATURE DATA]      [PRECIPITATION DATA]       SYMBOLS USED IN COLUMN 16

AVERAGE MONTHLY: 73.2   TOTAL FOR MONTH:   9.17    1 = FOG OR MIST
DPTR FM NORMAL:   5.0   DPTR FM NORMAL:    5.71    2 = FOG REDUCING VISIBILITY
HIGHEST:    92 ON  3    GRTST 24HR  1.88 ON 27-27      TO 1/4 MILE OR LESS
LOWEST:     54 ON 28                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   0.0 INCH    5 = HAIL
                        GRTST 24HR     0.0         6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   0           7 = DUSTSTORM OR SANDSTORM:
                                                       VSBY 1/2 MILE OR LESS
                                                   8 = SMOKE OR HAZE
[NO. OF DAYS WITH]      [WEATHER - DAYS WITH]      9 = BLOWING SNOW
                                                   X = TORNADO
MAX 32 OR BELOW:   0    0.01 INCH OR MORE:  15
MAX 90 OR ABOVE:   3    0.10 INCH OR MORE:  13
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   7
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   3

[HDD (BASE 65) ]
TOTAL THIS MO.     9    CLEAR  (SCALE 0-3)  14
DPTR FM NORMAL   -41    PTCLDY (SCALE 4-7)  13
TOTAL FM JUL 1     9    CLOUDY (SCALE 8-10)  3
DPTR FM NORMAL   -43

[CDD (BASE 65) ]
TOTAL THIS MO.   263
DPTR FM NORMAL   120    [PRESSURE DATA]
TOTAL FM JAN 1  1527    HIGHEST SLP 30.30 ON  3
DPTR FM NORMAL   406    LOWEST  SLP 29.76 ON  9

[REMARKS]
#FINAL-09-18#

 

London Kentucky data:

 

...THE LONDON KY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1954 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              97   09/05/2007
 LOW               32   09/24/1983
HIGHEST            91   09/04        MM      MM       88  09/23
LOWEST             55   09/30        MM      MM       45  09/08
                        09/29                             09/07
AVG. MAXIMUM     81.6              79.6     2.0     78.3
AVG. MINIMUM     65.7              56.9     8.8     56.6
MEAN             73.6              68.3     5.3     67.4
DAYS MAX >= 90      4               2.0     2.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         8.50   2004
 MINIMUM         0.40   2008
TOTALS             MM              3.37      MM     1.79
DAILY AVG.       0.21              0.11    0.10     0.06
DAYS >= .01        11               8.5     2.5        8
DAYS >= .10         9               5.4     3.6        5
DAYS >= .50         4               2.3     1.7        1
DAYS >= 1.00        3               0.9     2.1        0
GREATEST
 24 HR. TOTAL      MM                               0.95

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   MM
TOTALS             MM               0.0      MM       MM
SINCE 7/1          MM               0.0      MM       MM
SNOWDEPTH AVG.     MM                MM      MM       MM
DAYS >= 1.0        MM               0.0      MM       MM
GREATEST
 SNOW DEPTH        MM                                 MM
 24 HR TOTAL       MM                                 MM

DEGREE_DAYS
HEATING TOTAL       5                46     -41       41
 SINCE 7/1          5                47     -42       41
COOLING TOTAL     272               143     129      124
 SINCE 1/1       1480              1167     313     1093
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              3.5
HIGHEST WIND SPEED/DIRECTION    23/060    DATE  09/06
HIGHEST GUST SPEED/DIRECTION    45/060    DATE  09/06

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           13
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     83

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              6     MIXED PRECIP               0
HEAVY RAIN               10     RAIN                      11
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      26     FOG W/VIS <= 1/4 MILE      4
HAZE                      0

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

&&

...MONTHLY PRECIPITATION MISSING DUE TO A SENSOR OUTAGE FROM SEP
22ND-24TH...

$$

 

PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   LONDON KY
                                          MONTH:     SEPTEMBER
                                          YEAR:      2018
                                          LATITUDE:   37  4 N
                                          LONGITUDE:  84  5 W

  TEMPERATURE IN F:       :PCPN:    SNOW:  WIND      :SUNSHINE: SKY     :PK WND
================================================================================
1   2   3   4   5  6A  6B    7    8   9   10  11  12  13   14  15   16   17  18
                                     12Z  AVG MX 2MIN
DY MAX MIN AVG DEP HDD CDD  WTR  SNW DPTH SPD SPD DIR MIN PSBL S-S WX    SPD DR
================================================================================

 1  89  67  78   5   0  13 0.25    M    M  2.4 16 300   M    M   3 13     21 290
 2  90  66  78   5   0  13 0.00    M    M  2.0  8 250   M    M   1 1      13 200
 3  90  68  79   6   0  14 0.00    M    M  1.5 12 100   M    M   0 1      19  70
 4  91  68  80   8   0  15 0.00    M    M  1.5  8 170   M    M   0        11 180
 5  87  73  80   8   0  15 0.00    M    M  1.8  7 270   M    M   1        10 180
 6  89  70  80   8   0  15 1.04    M    M  2.7 23  60   M    M   2 13     45  60
 7  88  70  79   7   0  14 0.01    M    M  1.3 10 350   M    M   4 1      14  10
 8  86  69  78   7   0  13    T    M    M  3.7 14 240   M    M   1 1      19 240
 9  83  68  76   5   0  11 1.55    M    M  6.5 21 290   M    M   5 13     29 240
10  69  62  66  -4   0   1 0.28    M    M  5.5 12 300   M    M   7 1      16 300
11  71  61  66  -4   0   1 0.00    M    M  4.9 10  60   M    M  10 1      16 330
12  85  64  75   5   0  10 0.00    M    M  2.8  9  30   M    M   5 12     13  30
13  89  67  78   9   0  13 0.00    M    M  2.0 12 360   M    M   1 1      16  10
14  89  70  80  11   0  15 0.00    M    M  4.6 13  30   M    M   1 1      19  20
15  87  70  79  10   0  14 0.00    M    M  7.0 15  30   M    M   1        24  80
16  76  69  73   5   0   8 0.31    M    M  9.0 15  30   M    M   5 1      22  20
17  73  69  71   3   0   6 0.19    M    M  4.6 12 310   M    M  10 1      18 290
18  87  69  78  10   0  13 0.00    M    M  2.5 10 270   M    M   5 12     13 290
19  90  66  78  11   0  13 0.00    M    M  1.2  9 240   M    M   1 1      15  20
20  89  66  78  11   0  13 0.00    M    M  2.1  9 180   M    M   0 1      14 200
21  86  69  78  12   0  13 0.06    M    M  4.5 15 210   M    M   4 1      23 230
22  73  65  69   3   0   4    M    M    M  4.4 13  10   M    M   9 1      18  40
23  71  64  68   2   0   3    M    M    M  2.3 15 290   M    M   8 13     21 280
24  71  67  69   4   0   4    M    M    M  2.3  9 190   M    M   9 1      14 190
25  80  67  74   9   0   9 0.12    M    M  4.8 16 180   M    M  10 13     26 180
26  72  64  68   4   0   3 0.60    M    M  5.3 18 270   M    M  10 13     28 270
27  64  56  60  -4   5   0 1.17    M    M  5.3 14 340   M    M  10 12     21 350
28  76  57  67   3   0   2 0.00    M    M  1.9  8 240   M    M   5        10 180
29  74  55  65   2   0   0 0.00    M    M  3.0 12  10   M    M   4 12     15  40
30  82  55  69   6   0   4 0.00    M    M  1.7  9 250   M    M   1 1      13 250
================================================================================
SM 2447 1971         5 272    M     M    105.1          M      133
================================================================================
AV 81.6 65.7                               3.5 FASTST   M    M   4    MAX(MPH)
                                 MISC ---->  # 23  60               # 45   60
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2

                                          STATION:  LONDON KY
                                          MONTH:    SEPTEMBER
                                          YEAR:     2018
                                          LATITUDE:   37  4 N
                                          LONGITUDE:  84  5 W

[TEMPERATURE DATA]      [PRECIPITATION DATA]       SYMBOLS USED IN COLUMN 16

AVERAGE MONTHLY: 73.6   TOTAL FOR MONTH:    M       1 = FOG OR MIST
DPTR FM NORMAL:   5.3   DPTR FM NORMAL:     M       2 = FOG REDUCING VISIBILITY
HIGHEST:    91 ON  4    GRTST 24HR    M  ON   M         TO 1/4 MILE OR LESS
LOWEST:     55 ON 30,29                            3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:    M          5 = HAIL
                        GRTST 24HR    M  ON   M    6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:  M  ON   M    7 = DUSTSTORM OR SANDSTORM:
                                                       VSBY 1/2 MILE OR LESS
                                                   8 = SMOKE OR HAZE
[NO. OF DAYS WITH]      [WEATHER - DAYS WITH]      9 = BLOWING SNOW
                                                   X = TORNADO
MAX 32 OR BELOW:   0    0.01 INCH OR MORE:  11
MAX 90 OR ABOVE:   4    0.10 INCH OR MORE:   9
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   4
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   3

[HDD (BASE 65) ]
TOTAL THIS MO.     5    CLEAR  (SCALE 0-3)  13
DPTR FM NORMAL   -41    PTCLDY (SCALE 4-7)   9
TOTAL FM JUL 1     5    CLOUDY (SCALE 8-10)  8
DPTR FM NORMAL   -42

[CDD (BASE 65) ]
TOTAL THIS MO.   272
DPTR FM NORMAL   129    [PRESSURE DATA]
TOTAL FM JAN 1  1480    HIGHEST SLP 30.29 ON 29
DPTR FM NORMAL   313    LOWEST  SLP 29.77 ON  9

[REMARKS]
PRECIPITATION SENSOR OUTAGE ON 22ND-24TH
#FINAL-09-18#