Affton, MO Weather Forecast
Local 7-day forecast
Mostly Cloudy then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Affton, MO in one place.
A chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 30%.
Local Weather Overview
This forecast page for Affton, 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: Apr 9, 2026 3:07 PM CDT.
The active forecast window currently covers Apr 12 to Apr 15, 2026 for Affton, MO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 12 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 3:07 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Affton
Monday looks like the warmest upcoming period in Affton at 84 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Sunday at about 7 to 15 mph S.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 3:07 PM CDT
- Coverage
- 4 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. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 84. Chance of precipitation is 50%.
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 1pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Apr 12
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
81°F |
7 to 15 mph
S
|
|
Sunday Night
Apr 12
|
Chance Showers And Thunderstorms
|
66°F |
13 mph
S
|
|
Monday
Apr 13
|
Chance Showers And Thunderstorms
|
84°F |
14 mph
SW
|
|
Monday Night
Apr 13
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
68°F |
12 mph
S
|
|
Tuesday
Apr 14
|
Chance Showers And Thunderstorms
|
84°F |
13 mph
S
|
|
Tuesday Night
Apr 14
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
62°F |
12 mph
S
|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely
|
77°F |
12 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
56°F |
6 to 9 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Affton.
