CLIMATE CHARTS

Jacksonville, Illinois

Latitude: 39.7347 Longitude: -90.1978

Elevation: 609.9 feet (185.9 meters)

Jacksonville, Illinois Temperature Chart Daily average maximum and minimum temperatures for Jacksonville, 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 Jacksonville, Illinois Precipitation Chart Precipitation chart for Jacksonville, 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 JACKSONVILLE, IL Daylight chart for JACKSONVILLE, IL. Latitude 39.7. 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 Jacksonville, Illinois

Imperial Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °F 35.5 40.6 52.2 64.7 74.4 83.0 86.4 85.1 79.3 67.2 53.2 39.2
Minimum Temperature °F 17.2 20.4 29.3 39.6 49.9 59.4 63.2 60.9 52.1 41.2 31.8 20.6
Heating Degree Days °F 1198 966 753 398 153 22 2 9 90 351 676 1088
Cooling Degree Days °F 0 0 2 13 64 207 306 257 111 17 1 0
Precipitation in. 1.59 1.69 2.72 4.03 4.81 4.58 3.95 3.42 3.53 3.01 3.62 2.50

Metric Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °C 1.9 4.8 11.2 18.2 23.6 28.3 30.2 29.5 26.3 19.6 11.8 4.0
Minimum Temperature °C -8.2 -6.4 -1.5 4.2 9.9 15.2 17.3 16.1 11.2 5.1 -0.1 -6.3
Heating Degree Days °C 666 537 418 221 85 12 1 5 50 195 376 604
Cooling Degree Days °C 0 0 1 7 36 115 170 143 62 9 1 0
Precipitation cm. 4.04 4.29 6.91 10.24 12.22 11.63 10.03 8.69 8.97 7.65 9.19 6.35
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