Wilmington, IL Weather Forecast
Local 7-day forecast
Slight Chance Drizzle
Track current conditions, temperature changes, wind, and the full daily outlook for Wilmington, IL in one place.
A slight chance of drizzle before 3pm. Cloudy. High near 77, with temperatures falling to around 75 in the afternoon. South southwest wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Wilmington, 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: Jul 25, 2026 4:06 PM CDT.
The active forecast window currently covers Jul 25 to Jul 31, 2026 for Wilmington, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 25 to Jul 31, 2026
- Latest sync
- Jul 25, 2026 4:06 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Wilmington
Monday looks like the warmest upcoming period in Wilmington at 93 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 62 degrees F.
The strongest winds are forecast for Monday at about 5 to 15 mph SSW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 25, 2026 4:06 PM CDT
- Coverage
- 7 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
Patchy fog after 3am. Mostly cloudy, with a low around 69. South wind 0 to 5 mph.
Patchy fog before 8am. Partly sunny, with a high near 90. Heat index values as high as 102. South southwest wind 0 to 10 mph, with gusts as high as 20 mph.
A chance of showers and thunderstorms after 9pm. Mostly cloudy, with a low around 74. Heat index values as high as 101. South southwest wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. South southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
Mostly sunny, with a high near 87.
Mostly clear, with a low around 63.
Sunny, with a high near 85.
Mostly clear, with a low around 62.
Sunny, with a high near 85.
A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 65.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Jul 25
|
Slight Chance Drizzle
|
77°F |
5 mph
SSW
|
|
Tonight
Jul 25
|
Mostly Cloudy then Patchy Fog
|
69°F |
0 to 5 mph
S
|
|
Sunday
Jul 26
|
Patchy Fog then Partly Sunny
|
90°F |
0 to 10 mph
SSW
|
|
Sunday Night
Jul 26
|
Chance Showers And Thunderstorms
|
74°F |
5 mph
SSW
|
|
Monday
Jul 27
|
Chance Showers And Thunderstorms
|
93°F |
5 to 15 mph
SSW
|
|
Monday Night
Jul 27
|
Slight Chance Showers And Thunderstorms
|
72°F |
5 to 10 mph
WNW
|
|
Tuesday
Jul 28
|
Mostly Sunny
|
87°F |
10 mph
N
|
|
Tuesday Night
Jul 28
|
Mostly Clear
|
63°F |
0 to 10 mph
NNE
|
|
Wednesday
Jul 29
|
Sunny
|
85°F |
0 to 5 mph
NNE
|
|
Wednesday Night
Jul 29
|
Mostly Clear
|
62°F |
0 to 5 mph
NE
|
|
Thursday
Jul 30
|
Sunny
|
85°F |
0 to 5 mph
N
|
|
Thursday Night
Jul 30
|
Slight Chance Showers And Thunderstorms
|
65°F |
0 mph
|
|
Friday
Jul 31
|
Slight Chance Showers And Thunderstorms
|
86°F |
0 to 5 mph
E
|
|
Friday Night
Jul 31
|
Slight Chance Showers And Thunderstorms
|
67°F |
0 to 5 mph
E
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Wilmington.
