Grundy County, IA Weather Forecast
County weather hub
Chance Showers And Thunderstorms then Mostly Sunny
Compare major city weather across Grundy County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of showers and thunderstorms before 7am. Mostly sunny. High near 81, with temperatures falling to around 79 in the afternoon. East wind 3 to 7 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Grundy County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 4 of 4 mapped cities in Grundy County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jun 1 to Jun 6, 2026
- Latest sync
- May 31, 2026 1:38 AM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Grundy County
Saturday looks like the warmest upcoming period in Grundy County at 85 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 54 degrees F.
The strongest winds are forecast for Thursday at about 10 to 14 mph SSW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- May 31, 2026 1:38 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
Partly cloudy, with a low around 56. East wind 3 to 8 mph.
Sunny, with a high near 81.
Partly cloudy, with a low around 54.
Mostly sunny, with a high near 83.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 58.
A slight chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 85.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Jun 1
|
Chance Showers And Thunderstorms then Mostly Sunny
|
81°F |
3 to 7 mph
E
|
|
Monday Night
Jun 1
|
Partly Cloudy
|
56°F |
3 to 8 mph
E
|
|
Tuesday
Jun 2
|
Sunny
|
81°F |
6 to 9 mph
ESE
|
|
Tuesday Night
Jun 2
|
Partly Cloudy
|
54°F |
5 to 9 mph
SE
|
|
Wednesday
Jun 3
|
Mostly Sunny
|
83°F |
6 to 10 mph
SSE
|
|
Wednesday Night
Jun 3
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
58°F |
10 mph
S
|
|
Thursday
Jun 4
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
83°F |
10 to 14 mph
SSW
|
|
Thursday Night
Jun 4
|
Chance Showers And Thunderstorms
|
61°F |
13 mph
S
|
|
Friday
Jun 5
|
Chance Showers And Thunderstorms
|
84°F |
12 mph
SSW
|
|
Friday Night
Jun 5
|
Chance Showers And Thunderstorms
|
60°F |
6 to 12 mph
SW
|
|
Saturday
Jun 6
|
Chance Showers And Thunderstorms then Mostly Sunny
|
85°F |
8 mph
WSW
|
Major City Forecasts
Live forecast snapshots for major cities across Grundy County.
Coverage
Forecast coverage currently spans 4 of 4 mapped cities in Grundy County.
Largest mapped city population in this region: 2,670.
