CLIMATE CHARTS

Mt Vernon, Illinois

Latitude: 38.3483 Longitude: -88.8533

Elevation: 490.2 feet (149.4 meters)

Mt Vernon, Illinois Temperature Chart Daily average maximum and minimum temperatures for Mt Vernon, 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 Mt Vernon, Illinois Precipitation Chart Precipitation chart for Mt Vernon, 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 MT VERNON, IL Daylight chart for MT VERNON, IL. Latitude 38.3. 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 Mt Vernon, Illinois

Imperial Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °F 38.1 43.1 53.5 64.9 73.8 82.9 86.3 85.6 78.6 67.4 54.5 41.3
Minimum Temperature °F 20.9 24.2 33.4 43.6 53.6 62.9 66.9 64.6 55.8 43.8 34.8 23.9
Heating Degree Days °F 1100 878 670 341 120 12 1 3 68 311 612 1004
Cooling Degree Days °F 0 0 2 18 79 249 360 316 134 20 1 0
Precipitation in. 2.34 2.85 3.87 4.36 5.16 3.88 3.68 2.96 3.22 3.65 4.21 3.22

Metric Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °C 3.4 6.2 11.9 18.3 23.2 28.3 30.2 29.8 25.9 19.7 12.5 5.2
Minimum Temperature °C -6.2 -4.3 0.8 6.4 12.0 17.2 19.4 18.1 13.2 6.6 1.6 -4.5
Heating Degree Days °C 611 488 372 189 67 7 1 2 38 173 340 558
Cooling Degree Days °C 0 0 1 10 44 138 200 176 74 11 1 0
Precipitation cm. 5.94 7.24 9.83 11.07 13.11 9.86 9.35 7.52 8.18 9.27 10.69 8.18
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