Warren County, IL Weather Forecast
County weather hub
Chance Rain Showers
Compare major city weather across Warren County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of rain showers after 10am. Mostly cloudy, with a high near 54. Northwest wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 40%.
County Weather Overview
This county weather page brings together forecast coverage for Warren 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 Warren County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 16 to Oct 22, 2026
- Latest sync
- Oct 15, 2026 10:33 PM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Warren County
Thursday looks like the warmest upcoming period in Warren County at 76 degrees F.
Friday Night is the coolest period ahead with temperatures near 32 degrees F.
The strongest winds are forecast for Friday at about 20 to 25 mph NW.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Oct 15, 2026 10:33 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KDVN
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Areas of frost after 4am. Mostly clear, with a low around 32. North wind 0 to 20 mph, with gusts as high as 35 mph.
Areas of frost before 9am. Sunny, with a high near 57. Northeast wind 0 to 5 mph.
Areas of frost after 5am. Clear, with a low around 37.
Areas of frost before 7am. Sunny, with a high near 66.
Mostly clear, with a low around 41.
Mostly sunny, with a high near 68.
Partly cloudy, with a low around 45.
Mostly sunny, with a high near 73.
Mostly clear, with a low around 48.
Sunny, with a high near 75.
Mostly clear, with a low around 52.
Mostly sunny, with a high near 76.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Oct 16
|
Chance Rain Showers
|
54°F |
20 to 25 mph
NW
|
|
Friday Night
Oct 16
|
Mostly Clear then Areas Of Frost
|
32°F |
0 to 20 mph
N
|
|
Saturday
Oct 17
|
Areas Of Frost then Sunny
|
57°F |
0 to 5 mph
NE
|
|
Saturday Night
Oct 17
|
Clear then Areas Of Frost
|
37°F |
0 to 5 mph
S
|
|
Sunday
Oct 18
|
Areas Of Frost then Sunny
|
66°F |
5 to 10 mph
S
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
41°F |
5 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
68°F |
0 to 5 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
45°F |
0 to 5 mph
SE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
73°F |
0 to 5 mph
SE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
48°F |
0 to 5 mph
SE
|
|
Wednesday
Oct 21
|
Sunny
|
75°F |
0 to 5 mph
SE
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
52°F |
5 mph
SE
|
|
Thursday
Oct 22
|
Mostly Sunny
|
76°F |
5 to 10 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Warren County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Warren County.
Largest mapped city population in this region: 8,801.
