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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 64.2 41.9 53.5 -3.0 23 0 68.6 2 35.9 1 0 0 0 0 20 5 20 6 20 7 20 8 20 9 20 10 20 11 20 12 ------------------------------------------------------------------------------------ 51.8 34.6 43.1 1.3 2331 12 74.0 Mar 3.2 Feb 0 10 49 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 0.01 -3.84 0.01 2 1 0 0 20 5 20 6 20 7 20 8 20 9 20 10 20 11 20 12 --------------------------------------------- 12.38 0.72 3.26 Jan 38 20 3 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 4.8 21.0 2 SE 20 5 20 6 20 7 20 8 20 9 20 10 20 11 20 12 ------------------------------ 4.5 38.0 Mar WSW
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