Sangamon County, IL Weather Forecast
County weather hub
Chance Showers And Thunderstorms
Compare major city weather across Sangamon County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. South southwest wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
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
- Jun 9 to Jun 15, 2026
- Latest sync
- Jun 9, 2026 2:18 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 92 degrees F.
Sunday Night is the coolest period ahead with temperatures near 61 degrees F.
The strongest winds are forecast for Thursday at about 12 to 18 mph SSW.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 9, 2026 2:18 AM 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
A slight chance of rain showers before 10am, then a slight chance of showers and thunderstorms between 10am and 11am. Partly sunny, with a high near 90. Heat index values as high as 101. Southwest wind 6 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
A slight chance of showers and thunderstorms between 8pm and 10pm. Partly cloudy, with a low around 73. Heat index values as high as 102. South southwest wind 5 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 20%.
Sunny, with a high near 92. South southwest wind 9 to 17 mph, with gusts as high as 28 mph.
A chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 72. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of rain showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers and thunderstorms likely. Mostly sunny, with a high near 91. South southwest wind 12 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms likely before 7pm, then showers and thunderstorms likely between 7pm and 1am, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 65. West southwest wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 84.
Mostly clear, with a low around 63.
A slight chance of showers and thunderstorms after 7am. Sunny, with a high near 87.
A chance of showers and thunderstorms. Partly cloudy, with a low around 64.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 82.
A chance of showers and thunderstorms. Partly cloudy, with a low around 61.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 80.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jun 9
|
Chance Showers And Thunderstorms
|
69°F |
6 mph
SSW
|
|
Tuesday
Jun 9
|
Slight Chance Showers And Thunderstorms then Partly Sunny
|
90°F |
6 to 10 mph
SW
|
|
Tuesday Night
Jun 9
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
73°F |
5 to 9 mph
SSW
|
|
Wednesday
Jun 10
|
Sunny
|
92°F |
9 to 17 mph
SSW
|
|
Wednesday Night
Jun 10
|
Chance Showers And Thunderstorms
|
72°F |
10 to 15 mph
SSW
|
|
Thursday
Jun 11
|
Chance Showers And Thunderstorms
|
91°F |
12 to 18 mph
SSW
|
|
Thursday Night
Jun 11
|
Showers And Thunderstorms Likely
|
65°F |
8 to 16 mph
WSW
|
|
Friday
Jun 12
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
84°F |
9 mph
WNW
|
|
Friday Night
Jun 12
|
Mostly Clear
|
63°F |
6 mph
WSW
|
|
Saturday
Jun 13
|
Slight Chance Showers And Thunderstorms
|
87°F |
6 to 10 mph
SW
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms
|
64°F |
8 mph
W
|
|
Sunday
Jun 14
|
Chance Showers And Thunderstorms
|
82°F |
8 to 12 mph
N
|
|
Sunday Night
Jun 14
|
Chance Showers And Thunderstorms
|
61°F |
6 to 10 mph
NNE
|
|
Monday
Jun 15
|
Chance Rain Showers
|
80°F |
7 to 12 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.
