Alton, MO Weather Forecast
Local 7-day forecast
Slight Chance Rain Showers then Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Alton, MO in one place.
A slight chance of rain showers before 7am. Sunny, with a high near 90.
Local Weather Overview
This forecast page for Alton, 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 7, 2026 6:55 AM CDT.
The active forecast window currently covers Jun 9 to Jun 13, 2026 for Alton, MO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 9 to Jun 13, 2026
- Latest sync
- Jun 7, 2026 6:55 AM CDT
- Forecast office
- SGF
- Source
- NOAA / NWS
Daily Outlook
This Week in Alton
Tuesday looks like the warmest upcoming period in Alton at 90 degrees F.
Friday Night is the coolest period ahead with temperatures near 67 degrees F.
The strongest winds are forecast for Wednesday at about 3 to 9 mph S.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 7, 2026 6:55 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
Clear, with a low around 72.
Sunny, with a high near 90.
Mostly clear, with a low around 73.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 90.
A chance of showers and thunderstorms. Partly cloudy, with a low around 70.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 87.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 67.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jun 9
|
Slight Chance Rain Showers then Sunny
|
90°F |
6 mph
SW
|
|
Tuesday Night
Jun 9
|
Clear
|
72°F |
5 mph
S
|
|
Wednesday
Jun 10
|
Sunny
|
90°F |
3 to 9 mph
S
|
|
Wednesday Night
Jun 10
|
Mostly Clear
|
73°F |
8 mph
S
|
|
Thursday
Jun 11
|
Sunny then Slight Chance Showers And Thunderstorms
|
90°F |
6 to 9 mph
S
|
|
Thursday Night
Jun 11
|
Chance Showers And Thunderstorms
|
70°F |
3 to 8 mph
W
|
|
Friday
Jun 12
|
Chance Rain Showers then Chance Showers And Thunderstorms
|
87°F |
5 mph
N
|
|
Friday Night
Jun 12
|
Chance Showers And Thunderstorms
|
67°F |
3 mph
E
|
|
Saturday
Jun 13
|
Chance Showers And Thunderstorms
|
85°F |
5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Alton.