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 after 10am. Mostly sunny, with a high near 90. West wind 1 to 6 mph. Chance of precipitation is 50%.
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 10:20 AM CDT
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Hamilton County
Tuesday looks like the warmest upcoming period in Hamilton County at 95 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 64 degrees F.
The strongest winds are forecast for Tuesday at about 6 to 12 mph W.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 10:20 AM CDT
- Coverage
- 7 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 before 9pm. Partly cloudy. Low around 73, with temperatures rising to around 75 overnight. West southwest wind 1 to 5 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms after 1pm. Mostly sunny. High near 92, with temperatures falling to around 90 in the afternoon. West wind 3 to 10 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 10pm, then a chance of showers and thunderstorms between 10pm and 1am. Partly cloudy, with a low around 73. West wind 1 to 7 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 90. North wind around 3 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 69. North northeast wind around 2 mph. Chance of precipitation is 40%.
Mostly sunny, with a high near 92. South southwest wind 0 to 3 mph.
Partly cloudy, with a low around 75. South southwest wind around 6 mph.
Mostly sunny, with a high near 95. West wind 6 to 12 mph.
Mostly clear, with a low around 69. North northwest wind 6 to 9 mph.
Sunny, with a high near 85. North wind 6 to 9 mph.
Mostly clear, with a low around 64. North northeast wind 2 to 8 mph.
Sunny, with a high near 84. Northeast wind 2 to 6 mph.
Partly cloudy, with a low around 65. East northeast wind 1 to 5 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 17
|
Chance Showers And Thunderstorms
|
90°F |
1 to 6 mph
W
|
|
Tonight
Jul 17
|
Chance Showers And Thunderstorms then Partly Cloudy
|
73°F |
1 to 5 mph
WSW
|
|
Saturday
Jul 18
|
Mostly Sunny then Chance Showers And Thunderstorms
|
92°F |
3 to 10 mph
W
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms
|
73°F |
1 to 7 mph
W
|
|
Sunday
Jul 19
|
Mostly Sunny then Chance Showers And Thunderstorms
|
90°F |
3 mph
N
|
|
Sunday Night
Jul 19
|
Chance Showers And Thunderstorms then Mostly Clear
|
69°F |
2 mph
NNE
|
|
Monday
Jul 20
|
Mostly Sunny
|
92°F |
0 to 3 mph
SSW
|
|
Monday Night
Jul 20
|
Partly Cloudy
|
75°F |
6 mph
SSW
|
|
Tuesday
Jul 21
|
Mostly Sunny
|
95°F |
6 to 12 mph
W
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
69°F |
6 to 9 mph
NNW
|
|
Wednesday
Jul 22
|
Sunny
|
85°F |
6 to 9 mph
N
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
64°F |
2 to 8 mph
NNE
|
|
Thursday
Jul 23
|
Sunny
|
84°F |
2 to 6 mph
NE
|
|
Thursday Night
Jul 23
|
Partly Cloudy
|
65°F |
1 to 5 mph
ENE
|
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.
