Jersey County, IL Weather Forecast
County weather hub
Partly Cloudy
Compare major city weather across Jersey County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Partly cloudy, with a low around 72. Wind around 0 mph.
County Weather Overview
This county weather page brings together forecast coverage for Jersey County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 1 of 1 mapped cities in Jersey County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 16 to Jul 22, 2026
- Latest sync
- Jul 16, 2026 6:07 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Jersey County
Saturday looks like the warmest upcoming period in Jersey County at 93 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 68 degrees F.
The strongest winds are forecast for Saturday at about 7 to 12 mph W.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 16, 2026 6:07 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 91. Heat index values as high as 100. Northeast wind 0 to 3 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 73. Southwest wind around 3 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 90. Heat index values as high as 101. West wind 2 to 8 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 73. Southwest wind 3 to 7 mph. Chance of precipitation is 40%.
Sunny, with a high near 93.
A slight chance of showers and thunderstorms between 7pm and 1am. Mostly clear, with a low around 72. Chance of precipitation is 20%.
Sunny, with a high near 90.
Mostly clear, with a low around 69.
Mostly sunny, with a high near 93.
Partly cloudy, with a low around 73.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 68. Chance of precipitation is 20%.
Mostly sunny, with a high near 86.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jul 16
|
Partly Cloudy
|
72°F |
0 mph
|
|
Thursday
Jul 16
|
Mostly Sunny then Chance Showers And Thunderstorms
|
91°F |
0 to 3 mph
NE
|
|
Thursday Night
Jul 16
|
Chance Showers And Thunderstorms then Partly Cloudy
|
73°F |
3 mph
SW
|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
90°F |
2 to 8 mph
W
|
|
Friday Night
Jul 17
|
Chance Showers And Thunderstorms then Mostly Clear
|
73°F |
3 to 7 mph
SW
|
|
Saturday
Jul 18
|
Sunny
|
93°F |
7 to 12 mph
W
|
|
Saturday Night
Jul 18
|
Slight Chance Showers And Thunderstorms
|
72°F |
5 to 9 mph
W
|
|
Sunday
Jul 19
|
Sunny
|
90°F |
7 mph
NE
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
69°F |
3 to 7 mph
SE
|
|
Monday
Jul 20
|
Mostly Sunny
|
93°F |
7 mph
SW
|
|
Monday Night
Jul 20
|
Partly Cloudy
|
73°F |
8 mph
W
|
|
Tuesday
Jul 21
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
92°F |
8 to 12 mph
NW
|
|
Tuesday Night
Jul 21
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
68°F |
6 to 12 mph
N
|
|
Wednesday
Jul 22
|
Mostly Sunny
|
86°F |
6 to 10 mph
NE
|
Major City Forecasts
Live forecast snapshots for major cities across Jersey County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Jersey County.
Largest mapped city population in this region: 8,111.
