Delavan, IL Weather Forecast
Local 7-day forecast
Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Delavan, IL in one place.
Mostly cloudy, with a high near 68. Northeast wind 7 to 12 mph, with gusts as high as 17 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: Sep 22, 2026 9:17 AM CDT.
The active forecast window currently covers Sep 23 to Sep 28, 2026 for Delavan, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 23 to Sep 28, 2026
- Latest sync
- Sep 22, 2026 9:17 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Delavan
Monday looks like the warmest upcoming period in Delavan at 81 degrees F.
Friday Night is the coolest period ahead with temperatures near 50 degrees F.
The strongest winds are forecast for Wednesday at about 7 to 12 mph NE.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 22, 2026 9:17 AM CDT
- Coverage
- 6 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 cloudy, with a low around 55. Northeast wind 3 to 10 mph.
Partly sunny, with a high near 72. Northeast wind around 6 mph.
Partly cloudy, with a low around 56. East northeast wind around 5 mph.
Partly sunny, with a high near 73. East wind 3 to 7 mph.
Partly cloudy, with a low around 50.
Partly sunny, with a high near 72.
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 54.
A slight chance of rain showers before 7am. Partly sunny, with a high near 77.
Partly cloudy, with a low around 57.
Mostly sunny, with a high near 81.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 61.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 23
|
Mostly Cloudy
|
68°F |
7 to 12 mph
NE
|
|
Wednesday Night
Sep 23
|
Mostly Cloudy
|
55°F |
3 to 10 mph
NE
|
|
Thursday
Sep 24
|
Partly Sunny
|
72°F |
6 mph
NE
|
|
Thursday Night
Sep 24
|
Partly Cloudy
|
56°F |
5 mph
ENE
|
|
Friday
Sep 25
|
Partly Sunny
|
73°F |
3 to 7 mph
E
|
|
Friday Night
Sep 25
|
Partly Cloudy
|
50°F |
6 mph
E
|
|
Saturday
Sep 26
|
Partly Sunny
|
72°F |
6 mph
ESE
|
|
Saturday Night
Sep 26
|
Mostly Cloudy then Slight Chance Rain Showers
|
54°F |
5 mph
ESE
|
|
Sunday
Sep 27
|
Slight Chance Rain Showers then Partly Sunny
|
77°F |
5 mph
SE
|
|
Sunday Night
Sep 27
|
Partly Cloudy
|
57°F |
5 mph
ESE
|
|
Monday
Sep 28
|
Mostly Sunny
|
81°F |
6 mph
SE
|
|
Monday Night
Sep 28
|
Partly Cloudy then Slight Chance Rain Showers
|
61°F |
6 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Delavan.