Walnut, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Walnut, IL in one place.
Sunny, with a high near 84. West wind 5 to 10 mph, with gusts as high as 20 mph.
Local Weather Overview
This forecast page for Walnut, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 12, 2026 12:19 AM CDT.
The active forecast window currently covers Oct 13 to Oct 18, 2026 for Walnut, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 13 to Oct 18, 2026
- Latest sync
- Oct 12, 2026 12:19 AM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Walnut
Tuesday looks like the warmest upcoming period in Walnut at 84 degrees F.
Friday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Friday at about 15 to 25 mph NW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 12, 2026 12:19 AM CDT
- Coverage
- 6 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
Showers and thunderstorms after 7pm. Mostly cloudy, with a low around 62. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Rain showers. Mostly cloudy, with a high near 73. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers. Mostly cloudy, with a low around 55. Chance of precipitation is 30%.
Rain showers likely before 1pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 68. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.
A slight chance of rain showers before 7am. Partly sunny, with a high near 60.
Partly cloudy, with a low around 35.
Sunny, with a high near 56.
Clear, with a low around 37.
Sunny, with a high near 63.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Oct 13
|
Sunny
|
84°F |
5 to 10 mph
W
|
|
Tuesday Night
Oct 13
|
Showers And Thunderstorms
|
62°F |
0 to 5 mph
N
|
|
Wednesday
Oct 14
|
Rain Showers
|
73°F |
5 to 10 mph
NE
|
|
Wednesday Night
Oct 14
|
Chance Rain Showers
|
55°F |
10 mph
NE
|
|
Thursday
Oct 15
|
Rain Showers Likely
|
68°F |
10 mph
E
|
|
Thursday Night
Oct 15
|
Showers And Thunderstorms Likely
|
49°F |
10 to 15 mph
NE
|
|
Friday
Oct 16
|
Slight Chance Rain Showers then Partly Sunny
|
60°F |
15 to 25 mph
NW
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
35°F |
10 to 20 mph
NW
|
|
Saturday
Oct 17
|
Sunny
|
56°F |
5 mph
NW
|
|
Saturday Night
Oct 17
|
Clear
|
37°F |
0 to 5 mph
SW
|
|
Sunday
Oct 18
|
Sunny
|
63°F |
10 to 15 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Walnut.