Hamilton County, IL Weather Forecast
County weather hub
Chance Showers And Thunderstorms
Compare major city weather across Hamilton County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 78. East northeast wind 5 to 9 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
- May 30 to May 31, 2026
- Latest sync
- May 25, 2026 7:02 AM CDT
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Hamilton County
Saturday looks like the warmest upcoming period in Hamilton County at 78 degrees F.
Saturday Night is the coolest period ahead with temperatures near 61 degrees F.
The strongest winds are forecast for Sunday at about 7 to 10 mph NNE.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- May 25, 2026 7:02 AM CDT
- Coverage
- 2 days
- Time zone
- America/Chicago
- Forecast office
- PAH
- Radar station
- KVWX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Northeast wind 6 to 9 mph.
A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 77. North northeast wind 7 to 10 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
May 30
|
Chance Showers And Thunderstorms
|
78°F |
5 to 9 mph
ENE
|
|
Saturday Night
May 30
|
Chance Showers And Thunderstorms
|
61°F |
6 to 9 mph
NE
|
|
Sunday
May 31
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
77°F |
7 to 10 mph
NNE
|
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: 2,730.
