Weather in O’Fallon in 2021

Information about air temperature, pressure, wind speed, humidity in O’Fallon in 2021 is based on analysis of available statistical data and long-term forecast methods.

201520162017201820192020202120222023
January
day night
+37° +32°
29.5inHg
6.7mph
76%
February
day night
+30° +23°
29.6inHg
7.8mph
70%
March
day night
+57° +46°
29.5inHg
7.4mph
63%
April
day night
+63° +50°
29.4inHg
6.5mph
63%
May
day night
+70° +57°
29.5inHg
5.4mph
68%
June
day night
+82° +70°
29.4inHg
4.5mph
71%
July
day night
+82° +72°
29.4inHg
3.4mph
77%
August
day night
+86° +72°
29.4inHg
3.8mph
76%
September
day night
+81° +66°
29.4inHg
4.5mph
70%
October
day night
+68° +57°
29.4inHg
5.8mph
79%
November
day night
+54° +39°
29.6inHg
5.6mph
64%
December
day night
+52° +43°
29.4inHg
6mph
73%

Average values in 2021

75 d.
Precipitation
155 d.
Cloudy
135 d.
Clear
day
+64
°F
night
+54
°F

More about the weather

HourlyWeek10 daysWeather for 14 daysMonthSunrise

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Minimum and maximum
world's temperature today
Greenland
Saqqaq
day
+28°F
night
+10°F
India
Bhavnagar
day
+117°F
night
+88°F
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