Sangamon County, IL Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across Sangamon County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 81. East southeast wind around 3 mph.
County Weather Overview
This county weather page brings together forecast coverage for Sangamon County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 8 of 8 mapped cities in Sangamon County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 24 to Aug 28, 2026
- Latest sync
- Aug 22, 2026 10:19 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Sangamon County
Wednesday looks like the warmest upcoming period in Sangamon County at 86 degrees F.
Monday Night is the coolest period ahead with temperatures near 62 degrees F.
The strongest winds are forecast for Thursday at about 2 to 7 mph NW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 22, 2026 10:19 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 62. East wind around 3 mph.
Mostly sunny, with a high near 84. Southeast wind around 6 mph.
Partly cloudy, with a low around 65.
Mostly sunny, with a high near 86.
A slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 65.
Sunny, with a high near 86.
Mostly clear, with a low around 65.
Sunny, with a high near 86.
A slight chance of rain showers after 7pm. Partly cloudy, with a low around 67.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 24
|
Mostly Sunny
|
81°F |
3 mph
ESE
|
|
Monday Night
Aug 24
|
Partly Cloudy
|
62°F |
3 mph
E
|
|
Tuesday
Aug 25
|
Mostly Sunny
|
84°F |
6 mph
SE
|
|
Tuesday Night
Aug 25
|
Partly Cloudy
|
65°F |
3 mph
SE
|
|
Wednesday
Aug 26
|
Mostly Sunny
|
86°F |
6 mph
SW
|
|
Wednesday Night
Aug 26
|
Slight Chance Showers And Thunderstorms
|
65°F |
2 to 6 mph
W
|
|
Thursday
Aug 27
|
Sunny
|
86°F |
2 to 7 mph
NW
|
|
Thursday Night
Aug 27
|
Mostly Clear
|
65°F |
1 to 6 mph
NNE
|
|
Friday
Aug 28
|
Sunny
|
86°F |
2 to 6 mph
ENE
|
|
Friday Night
Aug 28
|
Slight Chance Rain Showers
|
67°F |
5 mph
E
|
Major City Forecasts
Live forecast snapshots for major cities across Sangamon County.
Coverage
Forecast coverage currently spans 8 of 8 mapped cities in Sangamon County.
Largest mapped city population in this region: 113,671.
