O'Fallon, Illinois Weather
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Weather Forecast for O'Fallon, Illinois : St. Clair County
Issued: 5:40 pm CDT Aug 12, 2022 Latitude: 38.5922715 Longitude: -89.9112124 View on Google Maps

MouseOver for Detail Forecast
Tonight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
Cloudy on Tonight Mostly Sunny on Saturday Mostly Sunny on Sunday Partly Sunny on Monday 40% chance of thunderstorms on Tuesday 20% chance of rain on Wednesday Sunny on Thursday 20% chance of rain on Friday
Low: 62°F High: 86°F High: 88°F High: 83°F High: 77°F High: 81°F High: 82°F High: 82°F
Low: 69°F Low: 66°F Low: 66°F Low: 63°F Low: 62°F Low: 62°F  
Cloudy Mostly Sunny Mostly Sunny Partly Sunny Thunderstorms Rain Sunny Rain
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Current Conditions at
SCOTT AFB - (KBLV)
75°
Partly Cloudy
as of 7:56 PM CDST
Rel. Humidity: 57%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
3 MPH
050° Northeast
Cloud Level(s): Few at 15000ft, Scattered at 25000ft
Current Conditions at
EAST ST LOUIS - (KCPS)
72°
Clear
as of 7:53 PM CDST
Rel. Humidity: 73%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
5 MPH
090° East
Cloud Level(s): Clear
Current Conditions at
ALTON - (KALN)
70°
Clear
as of 7:50 PM CDST
Rel. Humidity: 77%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
5 MPH
130° Southeast
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
75°
Mostly Cloudy
as of 7:51 PM CDST
Rel. Humidity: 53%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
7 MPH
080° East
Cloud Level(s): Few at 15000ft, Broken at 25000ft
Cloudy on Tonight Tonight... Partly cloudy, with a low around 62. Light east wind.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 86. Light southeast wind becoming south 5 to 10 mph in the morning.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 69. South wind around 8 mph.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 88. Southwest wind 6 to 10 mph becoming northwest in the afternoon.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 66. North wind 3 to 7 mph.

Partly Sunny on Monday Monday... Partly sunny, with a high near 83.

30% chance of thunderstorms Monday Night Monday Night... A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66.

40% chance of thunderstorms Tuesday Tuesday... A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 77.

20% chance of thunderstorms Tuesday Night Tuesday Night... A slight chance of showers and thunderstorms. Partly cloudy, with a low around 63. Chance of precipitation is 20%.

20% chance of rain Wednesday Wednesday... A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 81.

Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 62.

Sunny on Thursday Thursday... Sunny, with a high near 82.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 62.

20% chance of rain Friday Friday... A 20 percent chance of showers. Mostly sunny, with a high near 82.

Sun Almanac for O'Fallon, Illinois
Sunrise: 06:11 AM
Sunset: 7:58 PM
Civil Sunrise:05:43 AM
Civil Sunset: 8:26 PM
Nautical Sunrise: 05:08 AM
Nautical Sunset: 9:01 PM
Astro Sunrise: 04:31 AM
Astro Sunset: 9:38 PM
Moon Almanac for O'Fallon, Illinois
Moon Phase: Full Moon
Moon Illumination: 99%
Moon Age: 15.8 Days
Moon is currently below the horizon
Distance from Moon to Earth: 230,061 miles
Upcoming Lunar Events for
O'Fallon:
Next EventEvent TimeIllum

Moonrise:08:54 pm Fri98.6%
High Moon:02:18 am Sat97.9%
Moonset:07:50 am Sat97.1%
New Moon: Thu Jul 28
First Quarter: Fri Aug 5
Full Moon: Thu Aug 11
Last Quarter: Fri Aug 19
New Moon: Sat Aug 27
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.