Heavy Rains and Severe Weather Expected Across the Southern Plains into the Ohio Valley

A nearly stationary frontal boundary will bring potential for heavy rainfall and flash flooding from Oklahoma into the Ohio River Valley over the next few days. Severe weather is also expected for parts the Southern Plains and the Lower Mississippi River Valley on Thursday and Friday with threats of tornadoes, strong winds and hail. Snow is expected for parts of the Cascades and Northern Rockies. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

61°F

16°C

Humidity 93%
Wind Speed S 7 mph
Barometer 29.84 in (1010.1 mb)
Dewpoint 59°F (15°C)
Visibility 8.00 mi
Last update 23 Mar 2:53 am CDT
Extended Forecast for

Collinsville IL

Flood Watch March 23, 07:00pm until March 25, 01:00am
Click here for hazard details and duration
Flood Watch
  • Overnight

    Overnight: Mostly cloudy, with a low around 58. South wind around 10 mph, with gusts as high as 20 mph.

    Mostly Cloudy

    Low: 58 °F

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 1pm.  Cloudy, with a high near 69. South wind 9 to 11 mph becoming north in the afternoon. Winds could gust as high as 24 mph.

    Chance
    T-storms

    High: 69 °F

  • Thursday
    Night

    Thursday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rain.  Low around 40. Northeast wind 8 to 11 mph, with gusts as high as 20 mph.  Chance of precipitation is 100%.

    Heavy Rain

    Low: 40 °F

  • Friday

    Friday: Showers.  High near 49. Northeast wind 8 to 10 mph.  Chance of precipitation is 100%.

    Showers

    High: 49 °F

  • Friday
    Night

    Friday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Some of the storms could produce heavy rain.  Low around 44. East wind 9 to 18 mph becoming west after midnight. Winds could gust as high as 26 mph.  Chance of precipitation is 100%.

    Heavy Rain

    Low: 44 °F

  • Saturday

    Saturday: A slight chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 1pm.  Mostly cloudy, with a high near 53. Breezy.  Chance of precipitation is 20%.

    Breezy.
    Slight Chance
    T-storms then
    Slight Chance
    Showers

    High: 53 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 35.

    Mostly Clear

    Low: 35 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 58.

    Mostly Sunny

    High: 58 °F

  • Sunday
    Night

    Sunday Night: A 50 percent chance of showers.  Mostly cloudy, with a low around 41.

    Chance
    Showers

    Low: 41 °F

Detailed Forecast

Overnight
Mostly cloudy, with a low around 58. South wind around 10 mph, with gusts as high as 20 mph.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Cloudy, with a high near 69. South wind 9 to 11 mph becoming north in the afternoon. Winds could gust as high as 24 mph.
Thursday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rain. Low around 40. Northeast wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.
Friday
Showers. High near 49. Northeast wind 8 to 10 mph. Chance of precipitation is 100%.
Friday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Some of the storms could produce heavy rain. Low around 44. East wind 9 to 18 mph becoming west after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 100%.
Saturday
A slight chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 1pm. Mostly cloudy, with a high near 53. Breezy. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 35.
Sunday
Mostly sunny, with a high near 58.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 41.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 59.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 52.
Tuesday Night
Mostly clear, with a low around 33.
Wednesday
Sunny, with a high near 58.
Click Map For Forecast
Point Forecast:
Collinsville IL
 38.68°N 90°W (Elev. 499 ft)
3:21 am CDT Mar 23, 2023
3am CDT Mar 23, 2023-6pm CDT Mar 29, 2023
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database