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Report for 2017
 Annual Climatological Summary for 2017 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 ------------------------------------------------------------------------------------ 17 1 43.4 28.4 35.8 4.5 907 1 70.5 11 1.0 7 0 6 19 0 17 2 56.7 35.2 46.6 11.8 527 12 77.0 20 15.4 9 0 1 13 0 17 3 57.4 37.4 46.8 2.1 486 13 83.8 20 15.5 15 0 1 9 0 17 4 17 5 17 6 17 7 17 8 17 9 17 10 17 11 17 12 ------------------------------------------------------------------------------------ 52.5 33.7 43.1 6.1 1920 28 83.8 Mar 1.0 Jan 0 8 41 0 Precipitation (in) Dep. Max Days of Rain From Obs. >= YR MO Total Norm Day Date 0.01 0.10 1.00 --------------------------------------------- 17 1 1.24 -0.96 0.52 2 7 5 0 17 2 0.56 -1.70 0.24 28 6 3 0 17 3 1.72 -1.63 0.63 25 13 4 0 17 4 17 5 17 6 17 7 17 8 17 9 17 10 17 11 17 12 --------------------------------------------- 3.52 -4.29 0.63 Mar 26 12 0 Wind Speed (mph) Dom YR MO Avg. Hi Date Dir ------------------------------ 17 1 4.7 43.0 10 W 17 2 4.6 38.0 25 WSW 17 3 5.5 41.0 6 SSW 17 4 17 5 17 6 17 7 17 8 17 9 17 10 17 11 17 12 ------------------------------ 5.0 43.0 Jan WSW
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