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 >

Hazardous Weather Conditions

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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

More Information:

Local Forecast Office More Local Wx 3 Day History Mobile Weather Hourly Weather Forecast

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

Mostly Cloudy
Low: 58 °F
Thursday

Chance
T-storms
High: 69 °F
Thursday
Night

Heavy Rain
Low: 40 °F
Friday

Showers
High: 49 °F
Friday
Night

Heavy Rain
Low: 44 °F
Saturday

Breezy.
Slight Chance
T-storms then
Slight Chance
Showers
High: 53 °F
Saturday
Night

Mostly Clear
Low: 35 °F
Sunday

Mostly Sunny
High: 58 °F
Sunday
Night

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.