Sangamon County, IL Weather Forecast
County weather hub
Mostly Cloudy
Compare major city weather across Sangamon County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly cloudy, with a high near 72. North northeast wind 6 to 10 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
- Sep 23 to Sep 29, 2026
- Latest sync
- Sep 22, 2026 8:45 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Sangamon County
Tuesday looks like the warmest upcoming period in Sangamon County at 82 degrees F.
Friday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Wednesday at about 6 to 10 mph NNE.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 22, 2026 8:45 PM CDT
- Coverage
- 7 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
Mostly cloudy, with a low around 56. Northeast wind 3 to 9 mph.
Partly sunny, with a high near 75. Northeast wind around 6 mph.
Partly cloudy, with a low around 58. East northeast wind around 5 mph.
Partly sunny, with a high near 75. East northeast wind around 6 mph.
Mostly cloudy, with a low around 53. East wind around 6 mph.
Partly sunny, with a high near 72.
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 56.
A slight chance of rain showers before 7am. Mostly cloudy, with a high near 77.
Mostly cloudy, with a low around 56.
Mostly sunny, with a high near 80.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 59.
A chance of rain showers. Partly sunny, with a high near 82.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 23
|
Mostly Cloudy
|
72°F |
6 to 10 mph
NNE
|
|
Wednesday Night
Sep 23
|
Mostly Cloudy
|
56°F |
3 to 9 mph
NE
|
|
Thursday
Sep 24
|
Partly Sunny
|
75°F |
6 mph
NE
|
|
Thursday Night
Sep 24
|
Partly Cloudy
|
58°F |
5 mph
ENE
|
|
Friday
Sep 25
|
Partly Sunny
|
75°F |
6 mph
ENE
|
|
Friday Night
Sep 25
|
Mostly Cloudy
|
53°F |
6 mph
E
|
|
Saturday
Sep 26
|
Partly Sunny
|
72°F |
6 mph
ESE
|
|
Saturday Night
Sep 26
|
Mostly Cloudy then Slight Chance Rain Showers
|
56°F |
5 mph
ESE
|
|
Sunday
Sep 27
|
Slight Chance Rain Showers then Mostly Cloudy
|
77°F |
5 mph
SE
|
|
Sunday Night
Sep 27
|
Mostly Cloudy
|
56°F |
5 mph
ESE
|
|
Monday
Sep 28
|
Mostly Sunny
|
80°F |
5 mph
SE
|
|
Monday Night
Sep 28
|
Partly Cloudy then Slight Chance Rain Showers
|
59°F |
6 mph
ESE
|
|
Tuesday
Sep 29
|
Chance Rain Showers
|
82°F |
6 to 9 mph
SSE
|
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.
