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Alton
City Climate
Climate information of Alton, Illinois can be described by several parameters. Average temperature in January is 31.1 and average temperature in July is73.4. Alton, Illinois the climate makes it a good place to live in in the terms of weather.
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Jan.
Feb.
Mar.
Apr.
May
June
July
Aug.
Sep.
Oct.
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Dec.
Avg.
Avg Max Temperature 38.7 32.5 60.1 61.7 78.6 84.3 84.4 92.7 84.4 71.6 54.0 38.7 65.1 Avg Min Temperature 23.5 15.8 39.1 40.5 56.8 63.3 62.4 68.1 56.5 48.2 32.6 23.9 44.2 Avg Avg Temperature 31.1 24.1 49.6 51.1 67.7 73.8 73.4 80.4 70.5 59.9 43.3 31.3 54.7 Extreme Max Temperature(lowest) 55 53 80 84 88 92 92 102 96 90 72 61 Extreme Min Temperature(lowest) 43 33 61 61 65 72 75 78 72 69 51 39 Extreme Avg Temperature(lowest) 45.5 42.5 70.5 70.5 76.0 81.0 82.5 87.0 81.0 78.5 61.5 45.0 Extreme Max Temperature(highest) 17 13 28 33 62 70 71 83 67 51 35 25 Extreme Min Temperature(highest) 5 -3 15 21 38 50 51 52 35 30 24 1 Extreme Avg Temperature(highest) 11.0 6.5 21.5 27.0 50.0 63.0 61.0 68.5 52.5 44.0 31.0 13.0
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Avg.
Avg Precipitation 3.27 1.82 1.78 3.64 2.46 3.27 0.97 2.12 0.47 3.49 1.27 2.42 26.98 Extreme Precipitation (lowest) 1.13 0.95 0.49 0.80 0.89 1.03 0.55 0.79 0.16 1.85 1.24 0.48 Avg Snowfall 0.0 0.0 0.0 0.0 0.0 7.0 0.0 13.0 3.0 0.0 0.0 0.0 23.0 Extreme Snowfall (lowest) 0.0 0.0 0.0 0.0 0.0 4.5 0.0 9.0 3.0 0.0 0.0 0.0 Avg Snow Depth 0.0 0.0 0.0 0.0 0.0 0.5 0.0 1.0 0.1 0.0 0.0 0.0 0.1 Extreme Snow Depth (lowest) 0 0 0 0 0 4 0 9 3 0 0 0
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Avg.
Avg Heating Degree Days 4 0 39 221 645 1036 1109 1113 795 417 194 0 5573 Extreme Heating Degree Days(lowest) 4 0 12 21 34 52 58 53 47 28 19 0 Extreme Heating Degree Days(highest) 0 0 0 0 3 20 3 15 10 0 0 0 Avg Cooling Degree Days 0 0 26 17 106 220 269 486 210 70 0 0 1404 Extreme Cooling Degree Days(lowest) 0 0 6 6 11 16 18 22 16 14 0 0 Extreme Cooling Degree Days(highest) 0 0 0 0 0 0 0 4 0 0 0 0 Avg Growing Degree Days 0 0 197 186 449 578 730 951 621 335 39 0 4086 Extreme Growing Degree Days(lowest) 0 0 21 21 26 31 33 37 31 29 12 0 Extreme Growing Degree Days(highest) 0 0 0 0 0 13 11 19 3 0 0 0
The data is taken from www.noaa.gov reports.
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