Hamilton County, IA Weather Forecast
County weather hub
Slight Chance Light Rain then Mostly Cloudy
Compare major city weather across Hamilton County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A slight chance of rain before 10pm. Mostly cloudy, with a low around 42. Northwest wind 16 to 23 mph, with gusts as high as 30 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
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
- Oct 15 to Oct 22, 2026
- Latest sync
- Oct 15, 2026 11:35 PM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Hamilton County
Thursday looks like the warmest upcoming period in Hamilton County at 75 degrees F.
Friday Night is the coolest period ahead with temperatures near 30 degrees F.
The strongest winds are forecast for Friday at about 16 to 26 mph NNW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 11:35 PM 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
A slight chance of rain between 7am and 10am. Cloudy. High near 51, with temperatures falling to around 48 in the afternoon. North northwest wind 16 to 26 mph, with gusts as high as 41 mph. Chance of precipitation is 20%.
Widespread frost after 10pm. Mostly clear, with a low around 30. Northwest wind 1 to 13 mph, with gusts as high as 22 mph.
Widespread frost before 10am. Sunny. High near 58, with temperatures falling to around 55 in the afternoon. South southwest wind 1 to 13 mph, with gusts as high as 18 mph.
Clear, with a low around 39. South wind around 10 mph.
Sunny, with a high near 66.
Mostly clear, with a low around 44.
Mostly sunny, with a high near 67.
Partly cloudy, with a low around 46.
Mostly sunny, with a high near 72.
Partly cloudy, with a low around 51.
Mostly sunny, with a high near 74.
A chance of rain showers after 1am. Partly cloudy, with a low around 55. Chance of precipitation is 30%.
A chance of rain showers. Partly sunny, with a high near 75.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tonight
Oct 15
|
Slight Chance Light Rain then Mostly Cloudy
|
42°F |
16 to 23 mph
NW
|
|
Friday
Oct 16
|
Slight Chance Light Rain then Cloudy
|
51°F |
16 to 26 mph
NNW
|
|
Friday Night
Oct 16
|
Widespread Frost
|
30°F |
1 to 13 mph
NW
|
|
Saturday
Oct 17
|
Widespread Frost then Sunny
|
58°F |
1 to 13 mph
SSW
|
|
Saturday Night
Oct 17
|
Clear
|
39°F |
10 mph
S
|
|
Sunday
Oct 18
|
Sunny
|
66°F |
12 to 15 mph
SSW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
44°F |
5 to 10 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
67°F |
6 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
46°F |
5 mph
SSE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
72°F |
2 to 8 mph
SSE
|
|
Tuesday Night
Oct 20
|
Partly Cloudy
|
51°F |
7 mph
SE
|
|
Wednesday
Oct 21
|
Mostly Sunny
|
74°F |
7 to 12 mph
SSE
|
|
Wednesday Night
Oct 21
|
Partly Cloudy then Chance Rain Showers
|
55°F |
9 mph
SSE
|
|
Thursday
Oct 22
|
Chance Rain Showers
|
75°F |
7 to 12 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.
