Weather Trends for O'Fallon, Illinois

Monthly Highs/Lows

3-day Graphs

High Temperature

Low Temperature

85.5F

39.2F

Outside Temperature History Outside Humidity History Outside Dewpoint History Wind Chill History Average Wind Speed History Wind Direction History High Wind Speed History Direction of High Wind History Total Rain History Rain Rate History Barometer History Heat Index History

High Humidity

Low Humidity

95%

22%

High Dewpoint

Low Dewpoint

68.0F

28.0F

High Wind Speed

24.3 kt

High Barometer

Low Barometer

30.436 in

29.414 in

Rain Total

0.00 in

High Rain Rate

0.00 in/hr

Low Wind Chill

36.0F

High Heat Index

87.0F

Yearly Highs/Lows

High Temperature

Low Temperature

87.0F

1.1F

High Humidity

Low Humidity

98%

18%

High Dewpoint

Low Dewpoint

68.0F

-4.0F

High Wind Speed

28.7 kt

High Barometer

Low Barometer

30.884 in

29.414 in

Rain Total

0.27 in

High Rain Rate

14.77 in/hr

High Heat Index

87.0F

Low Wind Chill

1.0F

Updated at 13:00 04/25/17