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Report for 2020
 Annual Climatological Summary for 2020 Name: ofallonweather.com City: O'Fallon State: MO Elevation: 550 ft Lat: N 38° 50' 20" Lon: W 090° 43' 43" Temperature (°F), Heat Base: 65.0 Cool Base: 65.0 Dep. Heat Cool Max Max Min Min Mean Mean From Deg Deg >= <= <= <= YR MO Max Min Mean Norm Days Days Hi Date Low Date 90.0 32.0 32.0 0.0 ------------------------------------------------------------------------------------ 20 1 40.9 28.0 34.6 3.3 940 0 59.9 10 11.8 19 0 7 26 0 20 2 44.6 27.6 35.6 0.8 855 1 69.4 3 3.2 14 0 3 22 0 20 3 57.6 41.1 48.8 4.1 511 10 74.0 28 28.1 7 0 0 1 0 20 4 63.9 43.5 53.7 -2.7 373 33 89.4 8 28.9 18 0 0 2 0 20 5 71.7 54.5 63.0 -3.2 160 99 86.9 2 36.1 9 0 0 0 0 20 6 86.4 66.4 76.2 0.9 5 342 96.2 6 53.2 16 5 0 0 0 20 7 88.9 71.0 80.1 0.5 0 196 93.4 11 66.5 13 5 0 0 0 20 8 20 9 20 10 20 11 20 12 ------------------------------------------------------------------------------------ 64.8 47.4 56.0 0.5 2846 683 96.2 Jun 3.2 Feb 10 10 51 0 Precipitation (in) Dep. Max Days of Rain From Obs. >= YR MO Total Norm Day Date 0.01 0.10 1.00 --------------------------------------------- 20 1 5.60 3.40 3.26 10 11 7 1 20 2 2.84 0.58 1.08 24 12 5 1 20 3 3.93 0.58 1.09 19 14 8 1 20 4 4.94 1.09 1.57 28 13 8 1 20 5 5.10 0.88 1.38 17 16 10 2 20 6 5.16 0.92 2.28 22 10 6 2 20 7 0.46 -3.02 0.28 1 3 2 0 20 8 20 9 20 10 20 11 20 12 --------------------------------------------- 28.03 4.43 3.26 Jan 79 46 8 Wind Speed (mph) Dom YR MO Avg. Hi Date Dir ------------------------------ 20 1 4.1 36.0 18 W 20 2 4.3 26.0 3 WNW 20 3 4.7 38.0 29 WSW 20 4 4.6 36.0 13 W 20 5 3.4 32.0 4 W 20 6 3.3 30.0 9 SSW 20 7 2.1 21.0 1 NNW 20 8 20 9 20 10 20 11 20 12 ------------------------------ 3.8 38.0 Mar W
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