Decatur Ap, Illinois

ID: USW00003887 Latitude: 39.8344 Longitude: -88.8656

Elevation: 674.9 feet ( 205.7 meters)

Source: NOAA Climate Normals 1991-2020

DECATUR AP, IL US, STATE_NAME Temperature Chart Daily average maximum and minimum temperatures for DECATUR AP, IL US, STATE_NAME 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
DECATUR AP, IL US, Illinois Precipitation Chart Precipitation chart for DECATUR AP, IL US, 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 Precipitation Total: 36.36 in., 14.31 cm.
Daylight Chart for Decatur Ap Daylight chart for Decatur Ap. Latitude 39.8. 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 Decatur Ap, Illinois

Monthly Data from NOAA Monthly Normals 2006-2020

Imperial Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °F 35.6 38.4 52.5 64.1 74.7 83.8 85.7 84.6 79.5 65.9 51.9 40.2
Minimum Temperature °F 20.0 21.5 33.1 42.0 53.9 63.2 65.8 63.4 56.3 44.5 33.7 25.5
Heating Degree Days °F 1152.9 980.8 692.6 368.7 122.5 5.5 1.3 2.8 57.3 327.1 667.1 996.4
Cooling Degree Days °F 0.0 0.0 4.1 10.2 100.7 260.3 334.4 281.7 144.0 23.4 1.1 0.0
Precipitation I 1.8 1.9 2.5 4.0 4.3 4.8 3.6 2.9 3.3 3.4 2.7 2.7

Metric Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °C 2.0 3.6 11.4 17.8 23.7 28.8 29.8 29.2 26.4 18.8 11.1 4.6
Minimum Temperature °C -6.7 -5.8 0.6 5.6 12.2 17.3 18.8 17.4 13.5 6.9 0.9 -3.6
Heating Degree Days °C 622.7 527.1 367.0 187.1 50.3 -14.7 -17.1 -16.2 14.1 163.9 352.8 535.8
Cooling Degree Days °C -17.8 -17.8 -15.5 -12.1 38.2 126.8 168.0 138.7 62.2 -4.8 -17.2 -17.8
Precipitation M 4.5 4.9 6.5 10.3 11.0 12.2 9.3 7.4 8.3 8.7 6.8 7.0
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