Jersey County, IL Weather Forecast
County weather hub
Showers And Thunderstorms then Chance Showers And Thunderstorms
Compare major city weather across Jersey County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Showers and thunderstorms before noon, then a chance of showers and thunderstorms between noon and 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Cloudy, with a high near 81. Southeast wind 5 to 10 mph. Chance of precipitation is 90%.
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
- Oct 15 to Oct 20, 2026
- Latest sync
- Oct 14, 2026 4:22 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Jersey County
Thursday looks like the warmest upcoming period in Jersey County at 81 degrees F.
Saturday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Friday at about 20 to 23 mph NW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 14, 2026 4:22 PM CDT
- Coverage
- 6 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 before 7pm, then a chance of showers and thunderstorms between 7pm and 3am. Mostly cloudy. Low around 47, with temperatures rising to around 51 overnight. West wind 9 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.
A slight chance of rain showers after 1pm. Mostly cloudy, with a high near 56. Northwest wind 20 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 38. Chance of precipitation is 20%.
Sunny, with a high near 62.
Clear, with a low around 37.
Sunny, with a high near 68.
Mostly clear, with a low around 40.
Mostly sunny, with a high near 73.
Partly cloudy, with a low around 45.
Mostly sunny, with a high near 77.
Mostly clear, with a low around 49.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Oct 15
|
Showers And Thunderstorms then Chance Showers And Thunderstorms
|
81°F |
5 to 10 mph
SE
|
|
Thursday Night
Oct 15
|
Chance Showers And Thunderstorms
|
47°F |
9 to 20 mph
W
|
|
Friday
Oct 16
|
Mostly Cloudy then Slight Chance Rain Showers
|
56°F |
20 to 23 mph
NW
|
|
Friday Night
Oct 16
|
Slight Chance Rain Showers then Partly Cloudy
|
38°F |
7 to 18 mph
N
|
|
Saturday
Oct 17
|
Sunny
|
62°F |
2 to 6 mph
NE
|
|
Saturday Night
Oct 17
|
Clear
|
37°F |
0 to 3 mph
SE
|
|
Sunday
Oct 18
|
Sunny
|
68°F |
3 to 9 mph
S
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
40°F |
2 to 6 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
73°F |
2 to 6 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
45°F |
1 to 5 mph
SE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
77°F |
1 to 6 mph
SE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
49°F |
5 mph
SE
|
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.
