Delavan, IL Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Delavan, IL in one place.
Mostly sunny, with a high near 79. Southwest wind around 8 mph, with gusts as high as 16 mph.
Local Weather Overview
This forecast page for Delavan, 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: Apr 20, 2026 4:22 AM CDT.
The active forecast window currently covers Apr 22 to Apr 26, 2026 for Delavan, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 22 to Apr 26, 2026
- Latest sync
- Apr 20, 2026 4:22 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Delavan
Thursday looks like the warmest upcoming period in Delavan at 82 degrees F.
Saturday Night is the coolest period ahead with temperatures near 47 degrees F.
The strongest winds are forecast for Thursday at about 8 to 18 mph S.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 20, 2026 4:22 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 57. South wind around 7 mph, with gusts as high as 17 mph.
Mostly sunny, with a high near 82.
Showers and thunderstorms after 7pm. Mostly cloudy, with a low around 61. Chance of precipitation is 80%.
Showers and thunderstorms. Mostly cloudy, with a high near 72.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 48.
A chance of showers and thunderstorms. Mostly sunny, with a high near 69.
A slight chance of rain showers. Partly cloudy, with a low around 47.
A slight chance of rain showers. Mostly sunny, with a high near 68.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 22
|
Mostly Sunny
|
79°F |
8 mph
SW
|
|
Wednesday Night
Apr 22
|
Mostly Clear
|
57°F |
7 mph
S
|
|
Thursday
Apr 23
|
Mostly Sunny
|
82°F |
8 to 18 mph
S
|
|
Thursday Night
Apr 23
|
Showers And Thunderstorms
|
61°F |
14 to 17 mph
S
|
|
Friday
Apr 24
|
Showers And Thunderstorms
|
72°F |
13 mph
WSW
|
|
Friday Night
Apr 24
|
Chance Showers And Thunderstorms
|
48°F |
7 to 10 mph
NW
|
|
Saturday
Apr 25
|
Chance Showers And Thunderstorms
|
69°F |
10 mph
N
|
|
Saturday Night
Apr 25
|
Slight Chance Rain Showers
|
47°F |
6 to 9 mph
NNE
|
|
Sunday
Apr 26
|
Slight Chance Rain Showers
|
68°F |
9 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Delavan.