CLIMATE CHARTS
Cahokia, Illinois
Latitude: 38.5669 Longitude: -90.1942
Elevation: 399.9 feet (121.9 meters)
Monthly Data Table for Cahokia, Illinois
Imperial Units
Statistic |
Units |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Maximum Temperature |
°F |
39.8 |
45.4 |
55.6 |
67.0 |
75.5 |
84.0 |
88.0 |
87.0 |
79.6 |
69.1 |
56.2 |
42.6 |
Minimum Temperature |
°F |
21.5 |
24.9 |
34.7 |
45.5 |
55.3 |
64.5 |
68.7 |
66.7 |
57.8 |
45.7 |
35.5 |
24.9 |
Heating Degree Days |
°F |
1065 |
836 |
621 |
291 |
90 |
7 |
0 |
2 |
51 |
265 |
577 |
969 |
Cooling Degree Days |
°F |
0 |
0 |
5 |
29 |
103 |
285 |
414 |
369 |
162 |
29 |
3 |
0 |
Precipitation |
in. |
2.62 |
2.54 |
3.34 |
3.83 |
4.65 |
4.10 |
4.44 |
3.40 |
3.40 |
3.42 |
3.92 |
3.07 |
Metric Units
Statistic |
Units |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Maximum Temperature |
°C |
4.3 |
7.4 |
13.1 |
19.4 |
24.2 |
28.9 |
31.1 |
30.6 |
26.4 |
20.6 |
13.4 |
5.9 |
Minimum Temperature |
°C |
-5.8 |
-3.9 |
1.5 |
7.5 |
12.9 |
18.1 |
20.4 |
19.3 |
14.3 |
7.6 |
1.9 |
-3.9 |
Heating Degree Days |
°C |
592 |
464 |
345 |
162 |
50 |
4 |
0 |
1 |
28 |
147 |
321 |
538 |
Cooling Degree Days |
°C |
0 |
0 |
3 |
16 |
57 |
158 |
230 |
205 |
90 |
16 |
2 |
0 |
Precipitation |
cm. |
6.65 |
6.45 |
8.48 |
9.73 |
11.81 |
10.41 |
11.28 |
8.64 |
8.64 |
8.69 |
9.96 |
7.80 |