Hamilton County, IA Weather Forecast
County weather hub
Mostly Clear
Compare major city weather across Hamilton County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly clear. Low around 70, with temperatures rising to around 72 overnight. South southwest wind around 3 mph.
County Weather Overview
This county weather page brings together forecast coverage for Hamilton County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in Hamilton County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 17 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 5:36 AM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Hamilton County
Monday looks like the warmest upcoming period in Hamilton County at 98 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Tuesday at about 10 to 18 mph NNW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 5:36 AM CDT
- Coverage
- 7 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
Sunny, with a high near 92. Southwest wind 2 to 9 mph.
Mostly clear. Low around 72, with temperatures rising to around 74 overnight. Heat index values as high as 100. Southwest wind around 8 mph.
Sunny. High near 91, with temperatures falling to around 88 in the afternoon. North wind around 8 mph.
Mostly clear, with a low around 65. East northeast wind 3 to 8 mph.
Sunny, with a high near 91.
Partly cloudy, with a low around 72.
A slight chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 98. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 70.
Sunny, with a high near 86.
Mostly clear, with a low around 61.
Sunny, with a high near 82.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 60.
A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 82.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jul 17
|
Mostly Clear
|
70°F |
3 mph
SSW
|
|
Friday
Jul 17
|
Sunny
|
92°F |
2 to 9 mph
SW
|
|
Friday Night
Jul 17
|
Mostly Clear
|
72°F |
8 mph
SW
|
|
Saturday
Jul 18
|
Sunny
|
91°F |
8 mph
N
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
65°F |
3 to 8 mph
ENE
|
|
Sunday
Jul 19
|
Sunny
|
91°F |
7 mph
SE
|
|
Sunday Night
Jul 19
|
Partly Cloudy
|
72°F |
9 mph
SSE
|
|
Monday
Jul 20
|
Slight Chance Showers And Thunderstorms
|
98°F |
8 to 13 mph
SW
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
70°F |
10 mph
WNW
|
|
Tuesday
Jul 21
|
Sunny
|
86°F |
10 to 18 mph
NNW
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
61°F |
5 to 17 mph
N
|
|
Wednesday
Jul 22
|
Sunny
|
82°F |
6 mph
ENE
|
|
Wednesday Night
Jul 22
|
Partly Cloudy then Slight Chance Rain Showers
|
60°F |
6 mph
SE
|
|
Thursday
Jul 23
|
Slight Chance Showers And Thunderstorms
|
82°F |
3 to 8 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Hamilton County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Hamilton County.
Largest mapped city population in this region: 7,671.
