Saint Clair County, MO Weather Forecast
County weather hub
Chance 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 chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 80.
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
- May 30 to May 31, 2026
- Latest sync
- May 25, 2026 2:09 PM CDT
- Forecast office
- SGF
- Source
- NOAA / NWS
Daily Outlook
This Week in Saint Clair County
Saturday looks like the warmest upcoming period in Saint Clair County at 80 degrees F.
Sunday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Sunday at about 2 to 8 mph E.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- May 25, 2026 2:09 PM CDT
- Coverage
- 2 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
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
A slight chance of showers and thunderstorms. Partly sunny, with a high near 78.
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 60.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
May 30
|
Chance Showers And Thunderstorms
|
80°F |
1 to 7 mph
E
|
|
Saturday Night
May 30
|
Chance Showers And Thunderstorms
|
62°F |
2 to 6 mph
E
|
|
Sunday
May 31
|
Slight Chance Showers And Thunderstorms
|
78°F |
2 to 8 mph
E
|
|
Sunday Night
May 31
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
60°F |
2 to 7 mph
E
|
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.
