Saint Clair, MO Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Saint Clair, MO in one place.
Sunny, with a high near 92. Southwest wind around 6 mph.
Local Weather Overview
This forecast page for Saint Clair, MO is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 13, 2026 12:29 PM CDT.
The active forecast window currently covers Oct 13 to Oct 19, 2026 for Saint Clair, MO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 13 to Oct 19, 2026
- Latest sync
- Oct 13, 2026 12:29 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Saint Clair
Today looks like the warmest upcoming period in Saint Clair at 92 degrees F.
Friday Night is the coolest period ahead with temperatures near 36 degrees F.
The strongest winds are forecast for Friday at about 13 mph N.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 12:29 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
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 between 1am and 5am, then showers and thunderstorms likely. Partly cloudy, with a low around 69. Southwest wind around 5 mph. Chance of precipitation is 60%.
Showers and thunderstorms. Mostly cloudy, with a high near 79. West wind around 2 mph. Chance of precipitation is 100%.
Showers and thunderstorms. Mostly cloudy, with a low around 64. East wind around 1 mph. Chance of precipitation is 80%.
Showers and thunderstorms. Partly sunny, with a high near 81. Southwest wind around 5 mph. Chance of precipitation is 90%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 61. Chance of precipitation is 20%.
Mostly clear, with a low around 36.
Sunny, with a high near 61.
Mostly clear, with a low around 36.
Sunny, with a high near 70.
Partly cloudy, with a low around 45.
Mostly sunny, with a high near 74.
Partly cloudy, with a low around 50.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Oct 13
|
Sunny
|
92°F |
6 mph
SW
|
|
Tonight
Oct 13
|
Partly Cloudy then Chance Showers And Thunderstorms
|
69°F |
5 mph
SW
|
|
Wednesday
Oct 14
|
Showers And Thunderstorms
|
79°F |
2 mph
W
|
|
Wednesday Night
Oct 14
|
Showers And Thunderstorms
|
64°F |
1 mph
E
|
|
Thursday
Oct 15
|
Showers And Thunderstorms
|
81°F |
5 mph
SW
|
|
Thursday Night
Oct 15
|
Showers And Thunderstorms Likely
|
48°F |
5 to 12 mph
NW
|
|
Friday
Oct 16
|
Slight Chance Rain Showers then Mostly Sunny
|
61°F |
13 mph
N
|
|
Friday Night
Oct 16
|
Mostly Clear
|
36°F |
1 to 8 mph
N
|
|
Saturday
Oct 17
|
Sunny
|
61°F |
2 mph
NE
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
36°F |
1 mph
E
|
|
Sunday
Oct 18
|
Sunny
|
70°F |
3 mph
S
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
45°F |
2 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
74°F |
2 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
50°F |
1 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Saint Clair.
