Sangamon County, IL Weather Forecast
County weather hub
Slight Chance Rain Showers
Compare major city weather across Sangamon County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A slight chance of rain showers between 7am and 1pm. Partly sunny, with a high near 81.
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
- May 25 to May 28, 2026
- Latest sync
- May 21, 2026 9:33 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Sangamon County
Thursday looks like the warmest upcoming period in Sangamon County at 84 degrees F.
Monday Night is the coolest period ahead with temperatures near 61 degrees F.
The strongest winds are forecast for Wednesday at about 8 to 12 mph ESE.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- May 21, 2026 9:33 PM CDT
- Coverage
- 4 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
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 61.
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 82.
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 83.
A chance of showers and thunderstorms. Partly cloudy, with a low around 64.
A chance of showers and thunderstorms. Partly sunny, with a high near 84.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Memorial Day
May 25
|
Slight Chance Rain Showers
|
81°F |
6 mph
E
|
|
Monday Night
May 25
|
Mostly Cloudy then Slight Chance Rain Showers
|
61°F |
5 mph
ESE
|
|
Tuesday
May 26
|
Chance Showers And Thunderstorms
|
82°F |
6 to 10 mph
ESE
|
|
Tuesday Night
May 26
|
Chance Showers And Thunderstorms
|
63°F |
6 to 9 mph
ESE
|
|
Wednesday
May 27
|
Chance Showers And Thunderstorms
|
83°F |
8 to 12 mph
ESE
|
|
Wednesday Night
May 27
|
Chance Showers And Thunderstorms
|
64°F |
6 to 9 mph
ESE
|
|
Thursday
May 28
|
Chance Showers And Thunderstorms
|
84°F |
7 to 10 mph
ESE
|
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.
