CLIMATE CHARTS

Cahokia, Illinois

Latitude: 38.5669 Longitude: -90.1942

Elevation: 399.9 feet (121.9 meters)

Cahokia, Illinois Temperature Chart Daily average maximum and minimum temperatures for Cahokia, Illinois Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High & Low Temperature °F  °C -30 -34.4 -20 -28.9 -10 -23.3 0 -17.8 10 -12.2 20 -6.7 30 -1.1 40 4.4 50 10.0 60 15.6 70 21.1 80 26.7 90 32.2 100 37.8 110 43.3 Cahokia, Illinois Precipitation Chart Precipitation chart for Cahokia, Illinois Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Precipitation In. Cm. 0.00 0.00 0.10 0.25 0.20 0.51 0.30 0.76 0.40 1.02 0.50 1.27 0.60 1.52 0.70 1.78 0.80 2.03 0.90 2.29 1.00 2.54 Daylight Chart for CAHOKIA, IL Daylight chart for CAHOKIA, IL. Latitude 38.6. Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Sunrise/Sunset Daylight NOON NOON 0 0 2 2 4 4 6 6 8 8 10 10 12 12 14 2 16 4 18 6 20 8 22 10 24 12

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
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