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Report for 2021
 Annual Climatological Summary for 2021 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 ------------------------------------------------------------------------------------ 21 1 39.2 28.5 33.6 2.3 966 0 54.0 21 11.9 28 0 5 22 0 21 2 33.2 17.7 25.7 -9.1 1096 0 67.7 23 -4.2 16 0 14 23 4 21 3 60.0 41.7 50.5 5.8 456 9 78.6 27 28.4 2 0 0 4 0 21 4 68.8 46.6 57.6 1.2 98 24 80.6 6 27.8 1 0 0 2 0 21 5 21 6 21 7 21 8 21 9 21 10 21 11 21 12 ------------------------------------------------------------------------------------ 50.3 33.6 41.9 0.1 2618 34 80.6 Apr -4.2 Feb 0 19 51 4 Precipitation (in) Dep. Max Days of Rain From Obs. >= YR MO Total Norm Day Date 0.01 0.10 1.00 --------------------------------------------- 21 1 3.12 0.92 1.30 30 13 5 1 21 2 1.76 -0.50 1.20 28 5 3 1 21 3 2.15 -1.20 1.05 18 7 4 1 21 4 2.54 -1.31 1.28 7 3 2 2 21 5 21 6 21 7 21 8 21 9 21 10 21 11 21 12 --------------------------------------------- 9.57 -2.09 1.30 Jan 28 14 5 Wind Speed (mph) Dom YR MO Avg. Hi Date Dir ------------------------------ 21 1 4.1 27.0 14 W 21 2 4.5 31.0 4 NNW 21 3 4.8 34.0 10 S 21 4 4.9 34.0 10 SW 21 5 21 6 21 7 21 8 21 9 21 10 21 11 21 12 ------------------------------ 4.6 34.0 Mar WSW
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