Saint Clair County, MO Weather Forecast
County weather hub
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms
Compare major city weather across Saint Clair County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A slight chance of showers and thunderstorms before 7am, then showers and thunderstorms. Mostly cloudy, with a high near 72. Chance of precipitation is 90%.
County Weather Overview
This county weather page brings together forecast coverage for Saint Clair County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 1 of 1 mapped cities in Saint Clair County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 12 to Apr 16, 2026
- Latest sync
- Apr 10, 2026 3:06 AM CDT
- Forecast office
- SGF
- Source
- NOAA / NWS
Daily Outlook
This Week in Saint Clair County
Monday looks like the warmest upcoming period in Saint Clair County at 81 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 55 degrees F.
The strongest winds are forecast for Tuesday at about 13 to 17 mph SW.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 10, 2026 3:06 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- SGF
- Radar station
- KSGF
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms before 1am. Mostly cloudy, with a low around 65.
A chance of showers and thunderstorms after 7am. Partly sunny, with a high near 81.
A chance of showers and thunderstorms. Partly cloudy, with a low around 67.
A chance of showers and thunderstorms before 1pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 79.
Showers and thunderstorms likely. Mostly cloudy, with a low around 60.
Showers and thunderstorms likely. Partly sunny, with a high near 77.
A chance of showers and thunderstorms. Partly cloudy, with a low around 55.
A chance of rain showers. Mostly sunny, with a high near 79.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Apr 12
|
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms
|
72°F |
10 to 16 mph
S
|
|
Sunday Night
Apr 12
|
Showers And Thunderstorms
|
65°F |
10 to 14 mph
S
|
|
Monday
Apr 13
|
Chance Showers And Thunderstorms
|
81°F |
12 to 16 mph
SW
|
|
Monday Night
Apr 13
|
Chance Showers And Thunderstorms
|
67°F |
13 mph
S
|
|
Tuesday
Apr 14
|
Chance Showers And Thunderstorms
|
79°F |
13 to 17 mph
SW
|
|
Tuesday Night
Apr 14
|
Showers And Thunderstorms Likely
|
60°F |
13 mph
S
|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely
|
77°F |
9 to 13 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
55°F |
5 to 8 mph
SW
|
|
Thursday
Apr 16
|
Chance Rain Showers
|
79°F |
5 to 8 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Saint Clair County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Saint Clair County.
Largest mapped city population in this region: 1,080.
