Grinnell, IA Weather Forecast
Local 7-day forecast
Rain Showers Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Grinnell, IA in one place.
Rain showers likely before 1pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
Local Weather Overview
This forecast page for Grinnell, 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: Apr 9, 2026 6:11 PM CDT.
The active forecast window currently covers Apr 12 to Apr 15, 2026 for Grinnell, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 12 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 6:11 PM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Grinnell
Monday looks like the warmest upcoming period in Grinnell at 80 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 48 degrees F.
The strongest winds are forecast for Sunday at about 16 to 25 mph SSW.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 6:11 PM CDT
- Coverage
- 4 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
Showers and thunderstorms likely. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 80.
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 79. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.
A chance of rain showers. Partly sunny, with a high near 69. Chance of precipitation is 50%.
A chance of rain showers before 1am. Partly cloudy, with a low around 48.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Apr 12
|
Rain Showers Likely
|
71°F |
16 to 25 mph
SSW
|
|
Sunday Night
Apr 12
|
Showers And Thunderstorms Likely
|
61°F |
12 to 22 mph
SSW
|
|
Monday
Apr 13
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
80°F |
10 to 17 mph
SSW
|
|
Monday Night
Apr 13
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
63°F |
10 to 16 mph
SSW
|
|
Tuesday
Apr 14
|
Chance Showers And Thunderstorms
|
79°F |
10 to 16 mph
SSW
|
|
Tuesday Night
Apr 14
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
52°F |
15 mph
SW
|
|
Wednesday
Apr 15
|
Chance Rain Showers
|
69°F |
15 mph
WSW
|
|
Wednesday Night
Apr 15
|
Chance Rain Showers
|
48°F |
7 to 12 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grinnell.
