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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 88.5 70.9 79.5 -0.1 0 449 94.1 17 66.1 31 14 0 0 0 20 8 84.3 65.6 75.0 -2.8 13 322 93.8 24 55.7 5 4 0 0 0 20 9 77.9 58.7 67.5 -2.8 78 153 89.6 7 45.4 20 0 0 0 0 20 10 69.1 45.9 57.9 -0.8 197 48 86.7 7 32.1 16 0 0 0 0 20 11 20 12 ------------------------------------------------------------------------------------ 68.5 50.2 59.2 -0.3 3136 1460 96.2 Jun 3.2 Feb 23 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 6.23 2.75 1.71 30 12 9 3 20 8 5.36 2.35 3.17 8 9 5 1 20 9 2.87 -0.28 0.91 11 7 6 0 20 10 1.21 -1.57 0.44 18 5 4 0 20 11 20 12 --------------------------------------------- 43.24 10.70 3.26 Jan 109 68 12 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 2.4 26.0 21 SSW 20 8 2.3 37.0 10 WSW 20 9 2.6 25.0 28 WSW 20 10 3.3 32.0 12 WSW 20 11 20 12 ------------------------------ 3.5 38.0 Mar WSW
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