CLIMATE CHARTS

Harlan, Iowa

Latitude: 41.6783 Longitude: -95.3247

Elevation: 1299.9 feet (396.2 meters)

Harlan, Iowa Temperature Chart Daily average maximum and minimum temperatures for Harlan, 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 Harlan, Iowa Precipitation Chart Precipitation chart for Harlan, 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 HARLAN, IA Daylight chart for HARLAN, IA. Latitude 41.7. 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 Harlan, Iowa

Imperial Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °F 29.6 34.5 47.6 61.3 71.9 81.0 83.8 82.0 75.4 62.8 46.6 32.0
Minimum Temperature °F 10.2 14.3 25.0 36.5 49.5 59.5 63.8 61.6 51.5 38.9 26.0 13.8
Heating Degree Days °F 1398 1137 890 490 183 24 4 14 128 447 861 1305
Cooling Degree Days °F 0 0 0 7 49 182 277 225 81 8 0 0
Precipitation in. 0.86 0.87 2.16 3.30 4.60 4.63 4.17 3.75 3.81 2.59 1.62 1.16

Metric Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °C -1.3 1.4 8.7 16.3 22.2 27.2 28.8 27.8 24.1 17.1 8.1 0.0
Minimum Temperature °C -12.1 -9.8 -3.9 2.5 9.7 15.3 17.7 16.4 10.8 3.8 -3.3 -10.1
Heating Degree Days °C 777 632 494 272 102 13 2 8 71 248 478 725
Cooling Degree Days °C 0 0 0 4 27 101 154 125 45 4 0 0
Precipitation cm. 2.18 2.21 5.49 8.38 11.68 11.76 10.59 9.53 9.68 6.58 4.11 2.95
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