Hamilton County, IL Weather Forecast

County weather hub

78°
F

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.

Saturday, May 30, 2026
Wind: 5 to 9 mph ENE
Saturday

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 hub

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
Next High
78°F
Saturday
Next Low
61°F
Saturday Night
Rain Outlook
3
Periods mentioning precipitation
Windiest
7 to 10 mph
Sunday

Daily Outlook

Today
May 30
Chance Showers And Thunderstorms
78 °F
/ 61°F
Wind 5 to 9 mph
Sun
May 31
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
77 °F
Wind 7 to 10 mph

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 source

Extended Forecast

Saturday Night
May 30
61°F
Chance Showers And Thunderstorms
6 to 9 mph NE

A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Northeast wind 6 to 9 mph.

Sunday
May 31
77°F
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
7 to 10 mph NNE

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

Coverage

Tracked cities
2
Coverage
100%

Forecast coverage currently spans 2 of 2 mapped cities in Hamilton County.

Largest mapped city population in this region: 2,730.

Hamilton County Courthouse IL 2019
Hamilton County Courthouse IL 2019 image
Weather data provided by the National Weather Service (NOAA). Forecast pages update automatically as new periods are synced for each supported U.S. location.