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Report for 2018
 Annual Climatological Summary for 2018 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 ------------------------------------------------------------------------------------ 18 1 38.9 19.8 30.0 -1.3 1084 0 70.1 21 -7.9 1 0 12 23 3 18 2 47.1 27.0 37.1 2.3 786 5 77.6 15 4.9 5 0 6 21 0 18 3 50.0 35.0 42.4 -2.3 700 0 68.7 15 25.0 9 0 0 10 0 18 4 60.0 39.4 49.4 -7.0 495 26 87.2 12 23.0 7 0 0 10 0 18 5 82.9 61.1 72.5 6.3 11 154 90.3 13 34.7 6 1 0 0 0 18 6 18 7 18 8 18 9 18 10 18 11 18 12 ------------------------------------------------------------------------------------ 55.8 36.4 46.3 -0.4 3078 187 90.3 May -7.9 Jan 1 18 64 3 Precipitation (in) Dep. Max Days of Rain From Obs. >= YR MO Total Norm Day Date 0.01 0.10 1.00 --------------------------------------------- 18 1 1.32 -0.88 0.85 22 5 2 0 18 2 4.74 2.48 2.06 20 12 6 2 18 3 5.95 2.60 1.80 26 15 10 1 18 4 2.59 -1.26 1.57 13 6 3 1 18 5 3.02 -1.20 1.51 3 6 6 1 18 6 18 7 18 8 18 9 18 10 18 11 18 12 --------------------------------------------- 17.62 1.74 2.06 Feb 44 27 5 Wind Speed (mph) Dom YR MO Avg. Hi Date Dir ------------------------------ 18 1 4.5 30.0 11 WSW 18 2 3.9 32.0 20 SW 18 3 4.8 32.0 6 NE 18 4 4.6 36.0 3 W 18 5 3.2 33.0 14 SW 18 6 18 7 18 8 18 9 18 10 18 11 18 12 ------------------------------ 4.2 36.0 Apr WSW
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