Alton, IA Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Alton, IA in one place.
Sunny, with a high near 93. South southwest wind around 5 mph.
Local Weather Overview
This forecast page for Alton, IA 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: Jul 12, 2026 1:50 AM CDT.
The active forecast window currently covers Jul 14 to Jul 18, 2026 for Alton, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 14 to Jul 18, 2026
- Latest sync
- Jul 12, 2026 1:50 AM CDT
- Forecast office
- FSD
- Source
- NOAA / NWS
Daily Outlook
This Week in Alton
Thursday looks like the warmest upcoming period in Alton at 96 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 67 degrees F.
The strongest winds are forecast for Friday at about 5 to 15 mph S.
The forecast from Jul 14 through Jul 18 stays mostly dry.
Forecast Details
- Last updated
- Jul 12, 2026 1:50 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- FSD
- Radar station
- KFSD
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 67.
Sunny, with a high near 94.
Mostly clear, with a low around 70.
Sunny, with a high near 96.
Mostly clear, with a low around 72.
Sunny, with a high near 96.
Mostly clear, with a low around 73.
Sunny, with a high near 95.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jul 14
|
Sunny
|
93°F |
5 mph
SSW
|
|
Tuesday Night
Jul 14
|
Clear
|
67°F |
5 mph
S
|
|
Wednesday
Jul 15
|
Sunny
|
94°F |
0 to 5 mph
S
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
70°F |
5 to 10 mph
SSE
|
|
Thursday
Jul 16
|
Sunny
|
96°F |
5 to 10 mph
S
|
|
Thursday Night
Jul 16
|
Mostly Clear
|
72°F |
10 mph
S
|
|
Friday
Jul 17
|
Sunny
|
96°F |
5 to 15 mph
S
|
|
Friday Night
Jul 17
|
Mostly Clear
|
73°F |
10 to 15 mph
S
|
|
Saturday
Jul 18
|
Sunny
|
95°F |
5 to 10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Alton.