CLIMATE CHARTS

Rend Lake Dam, Illinois

Latitude: 38.0406 Longitude: -88.9883

Elevation: 455.1 feet (138.7 meters)

Rend Lake Dam, Illinois Temperature Chart Daily average maximum and minimum temperatures for Rend Lake Dam, 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 Rend Lake Dam, Illinois Precipitation Chart Precipitation chart for Rend Lake Dam, 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 REND LAKE DAM, IL Daylight chart for REND LAKE DAM, IL. Latitude 38. 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 Rend Lake Dam, Illinois

Imperial Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °F 40.9 44.3 57.0 67.7 76.3 84.8 87.4 87.8 80.9 69.3 57.0 44.1
Minimum Temperature °F 22.5 25.6 34.3 45.6 55.3 63.9 67.4 66.3 57.5 45.9 36.5 26.4
Heating Degree Days °F 1032 841 603 277 78 5 1 0 50 262 550 922
Cooling Degree Days °F 0 0 3 27 103 285 385 374 176 32 2 0
Precipitation in. 2.71 2.60 3.98 4.43 5.12 4.29 3.79 2.78 3.17 3.75 4.19 3.35

Metric Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °C 4.9 6.8 13.9 19.8 24.6 29.3 30.8 31.0 27.2 20.7 13.9 6.7
Minimum Temperature °C -5.3 -3.6 1.3 7.6 12.9 17.7 19.7 19.1 14.2 7.7 2.5 -3.1
Heating Degree Days °C 573 467 335 154 43 3 1 0 28 146 306 512
Cooling Degree Days °C 0 0 2 15 57 158 214 208 98 18 1 0
Precipitation cm. 6.88 6.60 10.11 11.25 13.00 10.90 9.63 7.06 8.05 9.53 10.64 8.51
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