Grundy County, IA Weather Forecast
County weather hub
Sunny
Compare major city weather across Grundy County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 91. Southwest wind around 2 mph.
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
- Jul 16 to Jul 21, 2026
- Latest sync
- Jul 15, 2026 3:30 AM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Grundy County
Friday looks like the warmest upcoming period in Grundy County at 92 degrees F.
Monday Night is the coolest period ahead with temperatures near 67 degrees F.
The strongest winds are forecast for Tuesday at about 7 to 12 mph NW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 15, 2026 3:30 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 72. South wind around 2 mph.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 92. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 72. Chance of precipitation is 20%.
Sunny, with a high near 92.
Mostly clear, with a low around 69.
Sunny, with a high near 90.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 89.
Partly cloudy, with a low around 67.
Mostly sunny, with a high near 84.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Jul 16
|
Sunny
|
91°F |
2 mph
SW
|
|
Thursday Night
Jul 16
|
Mostly Clear
|
72°F |
2 mph
S
|
|
Friday
Jul 17
|
Sunny then Slight Chance Showers And Thunderstorms
|
92°F |
2 to 7 mph
SW
|
|
Friday Night
Jul 17
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
72°F |
7 mph
SSW
|
|
Saturday
Jul 18
|
Sunny
|
92°F |
8 mph
W
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
69°F |
7 mph
NNE
|
|
Sunday
Jul 19
|
Sunny
|
90°F |
5 mph
SSE
|
|
Sunday Night
Jul 19
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
70°F |
6 mph
S
|
|
Monday
Jul 20
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
89°F |
6 to 10 mph
W
|
|
Monday Night
Jul 20
|
Partly Cloudy
|
67°F |
7 to 10 mph
NW
|
|
Tuesday
Jul 21
|
Mostly Sunny
|
84°F |
7 to 12 mph
NW
|
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.
