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Mixed Precipitation is moving eastward into New England,

Wintry precipitation will expand into the eastern portions of the Great Lakes and New England Tuesday into Tuesday night. An inclement weather pattern will produce coastal rain and higher elevation snow in the Pacific Northwest and Northern California on Tuesday, and into the Northern Intermountain Region by Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

41°F

5°C

Humidity 62%
Wind Speed SW 17 G 29 mph
Barometer 29.62 in (1002.8 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 22 Jan 9:53 pm CST
Extended Forecast for

O'Fallon IL

  • Tonight

    Tonight: A chance of rain showers before 2am, then a chance of rain and snow showers.  Cloudy, with a low around 33. Southwest wind around 17 mph, with gusts as high as 31 mph.  Chance of precipitation is 40%.

    Chance
    Showers then
    Chance
    Rain/Snow

    Low: 33 °F

  • Tuesday

    Tuesday: Cloudy, with a high near 38. West wind 13 to 17 mph, with gusts as high as 31 mph.

    Cloudy

    High: 38 °F

  • Tuesday
    Night

    Tuesday Night: Mostly cloudy, with a low around 25. West wind 5 to 9 mph.

    Mostly Cloudy

    Low: 25 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 43. West wind 5 to 8 mph.

    Mostly Sunny

    High: 43 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 28. Light and variable wind becoming south around 6 mph after midnight.

    Mostly Clear

    Low: 28 °F

  • Thursday

    Thursday: Sunny, with a high near 55.

    Sunny

    High: 55 °F

  • Thursday
    Night

    Thursday Night: Clear, with a low around 35.

    Clear

    Low: 35 °F

  • Friday

    Friday: Mostly sunny, with a high near 55.

    Mostly Sunny

    High: 55 °F

  • Friday
    Night

    Friday Night: A 40 percent chance of rain.  Mostly cloudy, with a low around 41.

    Chance Rain

    Low: 41 °F

Detailed Forecast

Tonight
A chance of rain showers before 2am, then a chance of rain and snow showers. Cloudy, with a low around 33. Southwest wind around 17 mph, with gusts as high as 31 mph. Chance of precipitation is 40%.
Tuesday
Cloudy, with a high near 38. West wind 13 to 17 mph, with gusts as high as 31 mph.
Tuesday Night
Mostly cloudy, with a low around 25. West wind 5 to 9 mph.
Wednesday
Mostly sunny, with a high near 43. West wind 5 to 8 mph.
Wednesday Night
Mostly clear, with a low around 28. Light and variable wind becoming south around 6 mph after midnight.
Thursday
Sunny, with a high near 55.
Thursday Night
Clear, with a low around 35.
Friday
Mostly sunny, with a high near 55.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 41.
Saturday
A 50 percent chance of rain. Mostly cloudy, with a high near 51.
Saturday Night
A 30 percent chance of rain. Partly cloudy, with a low around 30.
Sunday
Mostly sunny, with a high near 44.
Sunday Night
Mostly clear, with a low around 26.
Monday
Sunny, with a high near 43.
Click Map For Forecast
Point Forecast:
O'Fallon IL
 38.59°N 89.92°W (Elev. 551 ft)
7:43 pm CST Jan 22, 2018
10pm CST Jan 22, 2018-6pm CST Jan 29, 2018
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database