CLIMATE CHARTS

Vandalia, Illinois

Latitude: 38.9703 Longitude: -89.0922

Elevation: 540 feet (164.6 meters)

Vandalia, Illinois Temperature Chart Daily average maximum and minimum temperatures for Vandalia, 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 Vandalia, Illinois Precipitation Chart Precipitation chart for Vandalia, 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 VANDALIA, IL Daylight chart for VANDALIA, IL. Latitude 39. 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 Vandalia, Illinois

Imperial Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °F 36.3 41.5 52.6 64.9 74.3 83.6 87.0 86.0 79.2 67.1 53.9 40.1
Minimum Temperature °F 20.3 23.9 33.0 43.2 53.2 62.7 66.6 64.4 55.1 43.4 34.7 23.8
Heating Degree Days °F 1138 904 691 346 122 14 1 3 68 321 623 1024
Cooling Degree Days °F 0 0 2 17 83 258 366 319 133 18 1 0
Precipitation in. 2.63 2.55 3.24 3.70 5.00 4.15 3.60 3.20 2.85 3.24 4.02 3.09

Metric Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °C 2.4 5.3 11.4 18.3 23.5 28.7 30.6 30.0 26.2 19.5 12.2 4.5
Minimum Temperature °C -6.5 -4.5 0.6 6.2 11.8 17.1 19.2 18.0 12.8 6.3 1.5 -4.6
Heating Degree Days °C 632 502 384 192 68 8 1 2 38 178 346 569
Cooling Degree Days °C 0 0 1 9 46 143 203 177 74 10 1 0
Precipitation cm. 6.68 6.48 8.23 9.40 12.70 10.54 9.14 8.13 7.24 8.23 10.21 7.85
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