National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Monsoon and Heavy Rain This Weekend

The active monsoon is expected to continue into next week from the Four Corners region and Desert Southwest to the central Rockies. This rainfall may produce flash flooding and debris flows, especially near recent burn scar areas. Locally heavy rain is likely near much of the Gulf Coast this weekend due to a stalled front and weak tropical disturbance. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

78°F

26°C

Humidity 69%
Wind Speed S 5 mph
Barometer 29.98 in (1014.8 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 13 Aug 7:53 pm CDT
Extended Forecast for

Collinsville IL

  • Tonight

    Tonight: Partly cloudy, with a low around 69. South wind 6 to 8 mph.

    Partly Cloudy

    Low: 69 °F

  • Sunday

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

    Mostly Sunny

    High: 88 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 67. North wind 5 to 7 mph.

    Partly Cloudy

    Low: 67 °F

  • Monday

    Monday: Partly sunny, with a high near 82. North wind 6 to 9 mph.

    Partly Sunny

    High: 82 °F

  • Monday
    Night

    Monday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 65. North wind around 6 mph.

    Mostly Cloudy
    then Slight
    Chance
    Showers

    Low: 65 °F

  • Tuesday

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

    Chance
    Showers

    High: 77 °F

  • Tuesday
    Night

    Tuesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 63.

    Chance
    Showers

    Low: 63 °F

  • Wednesday

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

    Slight Chance
    Showers

    High: 81 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 62.

    Mostly Clear

    Low: 62 °F

Detailed Forecast

Tonight
Partly cloudy, with a low around 69. South wind 6 to 8 mph.
Sunday
Mostly sunny, with a high near 88. Southwest wind 6 to 10 mph becoming northwest in the afternoon.
Sunday Night
Partly cloudy, with a low around 67. North wind 5 to 7 mph.
Monday
Partly sunny, with a high near 82. North wind 6 to 9 mph.
Monday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 65. North wind around 6 mph.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 77.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 63.
Wednesday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 63.
Friday
Mostly sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 64.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 84.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Collinsville IL
 38.68°N 90°W (Elev. 499 ft)
Last Update:
7:40 pm CDT Aug 13, 2022
Forecast Valid:
8pm CDT Aug 13, 2022-6pm CDT Aug 20, 2022
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation