Affton, MO Weather Forecast
Local 7-day forecast
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 before 7am, then a chance of showers and thunderstorms. Partly sunny, with a high near 92. Heat index values as high as 109. Southwest wind 3 to 7 mph. Chance of precipitation is 50%.
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: Jun 9, 2026 8:16 AM CDT.
The active forecast window currently covers Jun 9 to Jun 15, 2026 for Affton, MO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 9 to Jun 15, 2026
- Latest sync
- Jun 9, 2026 8:16 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Affton
Wednesday looks like the warmest upcoming period in Affton at 95 degrees F.
Monday Night is the coolest period ahead with temperatures near 62 degrees F.
The strongest winds are forecast for Thursday at about 7 to 13 mph S.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 9, 2026 8:16 AM 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
Mostly clear, with a low around 75. Heat index values as high as 111. Southwest wind around 5 mph.
Sunny, with a high near 95. Heat index values as high as 106. Southwest wind 5 to 10 mph, with gusts as high as 21 mph.
Mostly clear, with a low around 76. Heat index values as high as 105. South wind 7 to 10 mph.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. South wind 7 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm, then showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 80%.
A chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Mostly clear, with a low around 66.
A slight chance of rain showers between 7am and 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 50%.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 50%.
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jun 9
|
Chance Showers And Thunderstorms
|
92°F |
3 to 7 mph
SW
|
|
Tonight
Jun 9
|
Mostly Clear
|
75°F |
5 mph
SW
|
|
Wednesday
Jun 10
|
Sunny
|
95°F |
5 to 10 mph
SW
|
|
Wednesday Night
Jun 10
|
Mostly Clear
|
76°F |
7 to 10 mph
S
|
|
Thursday
Jun 11
|
Sunny then Slight Chance Showers And Thunderstorms
|
95°F |
7 to 13 mph
S
|
|
Thursday Night
Jun 11
|
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms
|
70°F |
6 to 13 mph
W
|
|
Friday
Jun 12
|
Chance Showers And Thunderstorms then Mostly Sunny
|
86°F |
6 mph
NW
|
|
Friday Night
Jun 12
|
Mostly Clear
|
66°F |
1 to 5 mph
W
|
|
Saturday
Jun 13
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
88°F |
2 to 6 mph
S
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms
|
68°F |
5 mph
S
|
|
Sunday
Jun 14
|
Chance Rain Showers then Chance Showers And Thunderstorms
|
83°F |
7 mph
SE
|
|
Sunday Night
Jun 14
|
Chance Showers And Thunderstorms
|
64°F |
7 mph
N
|
|
Monday
Jun 15
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
81°F |
7 mph
NW
|
|
Monday Night
Jun 15
|
Slight Chance Showers And Thunderstorms
|
62°F |
5 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Affton.
