Severe Thunderstorms and Excessive Rainfall in the Mid-Atlantic; Heat and Fire Weather Concerns in the West

Scattered strong to severe storms, excessive rainfall, and flooding are expected across parts of the Mid-Atlantic into the Northeast today. Flood Watches are in effect. Heat will continue to impact the West today. Heat advisories are in effect for portions of the Intermountain West; and Extreme Heat Warnings are in effect for portions of Arizona and southeast California. Read More >

Rock Springs Climate Summary Banner

Temperatures | Wind |Precipitation| Snowfall

...Highlights of 2014...

4th Warmest Year on Record (over last 67 years, period of record 1948-2014).
2nd Driest Year on Record only 50% of normal precipitation.
7th Warmest January, 8th Warmest March and May
8th Driest January, 6th Driest December.

Temperature Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Average High	35.2	36.2	47.6	56.0	67.1	75.2	86.4	77.3	73.2	61.3	40.5	32.7	57.4
Normal Average High (1981-2010)	30.3	33.2	43.9	53.7	63.8	74.8	83.8	81.5	70.3	56.5	40.4	29.8	55.3
Average Low	17.7	17.6	24.7	29.8	40.3	45.6	55.5	51.8	44.5	35.3	20.2	15.8	33.2
Normal Average Low	12.5	14.8	23.1	29.4	37.7	46.4	54.0	52.2	42.7	32.3	21.2	12.5	31.7
Mean Temperature	26.4	26.9	36.1	42.9	53.7	60.4	71.0	64.6	58.8	48.3	30.3	24.3	45.3
Normal Mean Temperature	21.4	24.0	33.5	41.6	50.8	60.6	68.9	66.9	56.5	44.4	30.8	21.1	43.5
Departure from Normal	5.0	2.9	2.6	1.3	2.9	-0.2	2.1	-2.3	2.3	3.9	-0.5	3.2	1.8
Rank - Warmest to Coldest 67 years of record (P.O.R 1948-2014)	7	18	8	19	8	32	11	48	17	14	35	22	4
Highest Daily Maximum	45	51	61	71	85	87	94	88	84	72	64	49	94
Date of Occurrence	11,25	16	10	18	28	25	23	11	3,18	25	1	12	7/23
Lowest Daily Minimum	-2	-14	13	11	26	34	47	43	21	25	-12	-21	-21
Date of Occurrence	28	6	1	14	1,12	9,17	1,31	24	12	13,28	13	31	12/31
Number of Days with:
Maximum >= 90°	0	0	0	0	0	0	14	0	0	0	0	0	14
Maximum <= 32°	12	8	1	0	0	0	0	0	0	0	8	12	41
Minimum <= 32°	31	26	31	19	8	0	0	0	2	10	23	30	180
Minimum <= 0°	1	4	0	0	0	0	0	0	0	0	4	3	12
Record Highs Set or Tied	0	0	0	0	0	0	0	0	1	2	2	0	5
Record Lows Set or Tied	0	0	0	1	0	0	0	0	2	0	3	0	6

Temperature Ranks and Records:

Daily Records:

Max:

September: 84 on the 18^th.
October: 68 on the 24^th, 72 on the 25^th.
November: 64 on the 1^st (tie), 55 on the 28^th.

Min:

Apil: 11 on the 14^th
September: 27 on the 11^th(tie), 21 on the 12^th.
November: -4 on the 11^th (tie), -11 on the 12^th, -12 on the 13^th.

Top Ten Warmest Years on Record
Rank	Year	Average Temperature °F
1	2012	47.3
2	2003	45.5
3	1954	45.4
4	2014	45.3
5	1953, 1977	44.9
7	1988	44.8
8	1990	44.3
9	1958, 1999	44.1

Top Ten Coldest Years on Record
Rank	Year	Average Temperature °F
1	1993	39.6
2	1964	40.2
3	1984	40.9
4	1951	41.2
6	1961, 1973	41.4
7	1968	41.8
8	1975	41.9
9	2008	42.0
10	1949, 1971	42.1
46	2014	45.3

Wind Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Average Speed (MPH)	17.3	17.2	14.9	13.9	12.2	11.7	10.0	9.2	9.6	10.2	15.7	5.0	12.8
Maximum 3-sec Gust	56	61	58	54	54	52	60	58	46	55	60	59	61
Direction (tens of degrees)	26	27	27	27	05	28	23	25	06	28	26	28	27
Date of Occurrence	12	16	17	15	11	10	20	30	11	12	22	21	2/16

Precipitation Banner

Element	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Total (inches)	0.07	0.08	0.43	0.24	0.49	0.29	0.36	0.52	1.20	0.32	0.13	0.11	4.24
Normal Precipitaton (1981-2010)	0.45	0.48	0.68	0.91	1.21	0.79	0.64	0.62	0.92	0.87	0.49	0.50	8.56
Departure from Normal	-0.38	-0.40	-0.25	-0.67	-0.72	-0.50	-0.28	-0.10	0.28	-0.55	-0.36	-0.39	-4.32
Percent of Normal	16	17	63	26	40	37	56	84	130	37	27	22	50
Rank - Driest to Wettest 67 years (1948-2014)	8	18	18	10	16	16	22	32	52	34	10	6	2
Greatest 24-HR Total	0.04	0.07	0.15	0.16	0.19	0.10	0.24	0.15	1.13	0.20	0.05	0.08	1.13
Dates of Occurrence	12	7	6	1	29-30	8	29-30	6-7	27-28	12	22	25	9/27-28
Number of Days with:
Precipitation >= 0.01	3	3	8	3	11	4	4	10	5	2	5	3	61
Precipitation >= 0.10	0	0	2	1	2	1	2	2	2	2	0	0	14
Precipitation >= 1.00	0	0	0	0	0	0	0	0	0	0	0	0	0
Daily Precipitaton Records Set or Tied	0	0	0	0	0	0	0	0	2	0	1	0	3

Precipitation Ranks and Records:

One Day Precipitation Records:

September: 0.81 on the 27^th, 0.32 on the 28^th.
November: 0.03 on the 10^th.

Top Ten Driest Years on Record
Rank	Year	Precpitation (inches)
1	2012	3.15
2	2014	4.24
3	1974	4.55
4	1988	4.56
5	2013	4.68
6	2002	4.98
7	1953	5.17
8	1951	5.41
9	1954	5.46
10	2001	5.57

Top Ten Wettest Years on Record
Rank	Year	Precipitation (inches)
1	1965	14.57
2	1973	14.43
3	1978	13.40
4	1971	12.91
5	1957	12.67
6	1991	12.13
7	1993	11.89
8	1995	11.87
9	1963	11.74
10	1996	11.10
65	2014	4.24