National Weather Service United States Department of Commerce

 

 

ROCKFORD NORMALS (1991-2020)
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

 

September Normals for Rockford for Temperature and Precipitation

Day of Month High Low Average HDD CDD Precipitation
1 79.8 58.9 69.3 0.9 5.2 0.14
2 79.6 58.6 69.1 1 5 0.14
3 79.3 58.3 68.8 1.1 4.9 0.13
4 79.1 57.9 68.5 1.2 4.7 0.13
5 78.8 57.6 68.2 1.3 4.5 0.13
6 78.6 57.3 67.9 1.4 4.4 0.13
7 78.3 56.9 67.6 1.6 4.2 0.13
8 78 56.6 67.3 1.8 4 0.14
9 77.7 56.2 67 1.9 3.9 0.13
10 77.4 55.8 66.6 2.1 3.7 0.12
11 77.1 55.4 66.3 2.2 3.5 0.12
12 76.8 55 65.9 2.4 3.4 0.12
13 76.5 54.7 65.6 2.7 3.2 0.12
14 76.1 54.3 65.2 2.9 3.1 0.13
15 75.8 53.8 64.8 3.1 2.9 0.12
16 75.4 53.4 64.4 3.4 2.8 0.12
17 75.1 53 64 3.6 2.7 0.12
18 74.7 52.6 63.6 3.9 2.5 0.13
19 74.3 52.2 63.2 4.1 2.4 0.12
20 73.9 51.8 62.8 4.4 2.2 0.12
21 73.5 51.3 62.4 4.6 2.1 0.13
22 73.1 50.9 62 4.9 1.9 0.12
23 72.7 50.5 61.6 5.1 1.8 0.12
24 72.3 50.1 61.2 5.4 1.6 0.11
25 71.9 49.7 60.8 5.8 1.6 0.11
26 71.5 49.3 60.4 6.1 1.5 0.11
27 71 48.8 59.9 6.5 1.4 0.1
28 70.6 48.4 59.5 6.8 1.3 0.09
29 70.2 48 59.1 7.1 1.2 0.09
30 69.7 47.6 58.7 7.4 1.1 0.1
             
MONTH 75.3 53.5 64.4 106.7 88.7 3.62