Diagonal, IA Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Diagonal, IA in one place.
Sunny, with a high near 83. North wind around 7 mph.
Local Weather Overview
This forecast page for Diagonal, 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: Aug 1, 2026 3:00 AM CDT.
The active forecast window currently covers Aug 2 to Aug 7, 2026 for Diagonal, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 2 to Aug 7, 2026
- Latest sync
- Aug 1, 2026 3:00 AM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Diagonal
Friday looks like the warmest upcoming period in Diagonal at 89 degrees F.
Sunday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Friday at about 7 to 12 mph SSE.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 1, 2026 3:00 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- DMX
- Radar station
- KDMX
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 60. East wind 2 to 6 mph.
Sunny, with a high near 83.
Mostly clear, with a low around 62.
Sunny, with a high near 86.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 84. Chance of precipitation is 50%.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67.
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 89.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Aug 2
|
Sunny
|
83°F |
7 mph
N
|
|
Sunday Night
Aug 2
|
Mostly Clear
|
60°F |
2 to 6 mph
E
|
|
Monday
Aug 3
|
Sunny
|
83°F |
2 to 6 mph
SSE
|
|
Monday Night
Aug 3
|
Mostly Clear
|
62°F |
3 to 7 mph
SE
|
|
Tuesday
Aug 4
|
Sunny
|
86°F |
5 mph
SSE
|
|
Tuesday Night
Aug 4
|
Partly Cloudy then Chance Showers And Thunderstorms
|
64°F |
6 mph
E
|
|
Wednesday
Aug 5
|
Chance Showers And Thunderstorms
|
83°F |
5 to 8 mph
ENE
|
|
Wednesday Night
Aug 5
|
Chance Showers And Thunderstorms
|
64°F |
6 to 9 mph
E
|
|
Thursday
Aug 6
|
Chance Showers And Thunderstorms
|
84°F |
8 mph
SE
|
|
Thursday Night
Aug 6
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
67°F |
8 mph
ESE
|
|
Friday
Aug 7
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
89°F |
7 to 12 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Diagonal.