CLIMATE CHARTS

Jefferson, Iowa

Latitude: 42.0347 Longitude: -94.4114

Elevation: 1055.1 feet (321.6 meters)

Jefferson, Iowa Temperature Chart Daily average maximum and minimum temperatures for Jefferson, Iowa 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 Jefferson, Iowa Precipitation Chart Precipitation chart for Jefferson, Iowa 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 JEFFERSON, IA Daylight chart for JEFFERSON, IA. Latitude 42. 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 Jefferson, Iowa

Imperial Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °F 29.0 34.0 47.1 61.6 72.4 81.3 84.9 82.9 76.3 63.4 46.4 31.5
Minimum Temperature °F 10.3 14.5 25.2 36.2 48.5 58.6 63.3 60.7 50.9 39.0 26.6 14.2
Heating Degree Days °F 1406 1141 895 491 186 27 4 13 124 437 855 1307
Cooling Degree Days °F 0 0 0 8 45 176 286 224 82 9 0 0
Precipitation in. 0.93 1.05 2.05 3.37 4.54 4.99 4.61 3.95 2.98 2.44 1.88 1.31

Metric Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °C -1.7 1.1 8.4 16.4 22.4 27.4 29.4 28.3 24.6 17.4 8.0 -0.3
Minimum Temperature °C -12.1 -9.7 -3.8 2.3 9.2 14.8 17.4 15.9 10.5 3.9 -3.0 -9.9
Heating Degree Days °C 781 634 497 273 103 15 2 7 69 243 475 726
Cooling Degree Days °C 0 0 0 4 25 98 159 124 46 5 0 0
Precipitation cm. 2.36 2.67 5.21 8.56 11.53 12.67 11.71 10.03 7.57 6.20 4.78 3.33
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