La Salle County, IL Weather Forecast
County weather hub
Chance Showers And Thunderstorms
Compare major city weather across LaSalle County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
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. Partly sunny, with a high near 75.
County Weather Overview
This county weather page brings together forecast coverage for LaSalle County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 9 of 9 mapped cities in LaSalle County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 15 to Apr 16, 2026
- Latest sync
- Apr 10, 2026 11:44 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in LaSalle County
Thursday looks like the warmest upcoming period in LaSalle County at 78 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 54 degrees F.
The strongest winds are forecast for Wednesday at about 15 to 20 mph SW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 10, 2026 11:44 AM CDT
- Coverage
- 2 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
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. Partly cloudy, with a low around 54.
A chance of rain showers. Mostly sunny, with a high near 78.
A chance of rain showers before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 54.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 15
|
Chance Showers And Thunderstorms
|
75°F |
15 to 20 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
54°F |
10 to 15 mph
SW
|
|
Thursday
Apr 16
|
Chance Rain Showers
|
78°F |
10 to 15 mph
SSW
|
|
Thursday Night
Apr 16
|
Chance Showers And Thunderstorms
|
54°F |
10 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across LaSalle County.
Coverage
Forecast coverage currently spans 9 of 9 mapped cities in LaSalle County.
Largest mapped city population in this region: 18,097.
