Assumption, IL Weather Forecast
Local 7-day forecast
Patchy Fog then Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Assumption, IL in one place.
Patchy fog before 9am. Mostly sunny, with a high near 81. West southwest wind 1 to 5 mph.
Local Weather Overview
This forecast page for Assumption, 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: Aug 23, 2026 5:26 PM CDT.
The active forecast window currently covers Aug 24 to Aug 29, 2026 for Assumption, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 24 to Aug 29, 2026
- Latest sync
- Aug 23, 2026 5:26 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Assumption
Wednesday looks like the warmest upcoming period in Assumption at 87 degrees F.
Monday Night is the coolest period ahead with temperatures near 59 degrees F.
The strongest winds are forecast for Thursday at about 3 to 9 mph NW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 23, 2026 5:26 PM 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 clear, with a low around 59. East wind around 5 mph.
Sunny, with a high near 84. Southeast wind around 5 mph.
Partly cloudy, with a low around 64. Southeast wind around 3 mph.
Mostly sunny, with a high near 87. South southwest wind 3 to 8 mph. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 64. Chance of precipitation is 40%.
Sunny, with a high near 86.
Mostly clear, with a low around 62.
Sunny, with a high near 86.
Mostly clear, with a low around 63.
Mostly sunny, with a high near 87.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 24
|
Patchy Fog then Mostly Sunny
|
81°F |
1 to 5 mph
WSW
|
|
Monday Night
Aug 24
|
Mostly Clear
|
59°F |
5 mph
E
|
|
Tuesday
Aug 25
|
Sunny
|
84°F |
5 mph
SE
|
|
Tuesday Night
Aug 25
|
Partly Cloudy
|
64°F |
3 mph
SE
|
|
Wednesday
Aug 26
|
Mostly Sunny
|
87°F |
3 to 8 mph
SSW
|
|
Wednesday Night
Aug 26
|
Chance Showers And Thunderstorms
|
64°F |
2 to 6 mph
W
|
|
Thursday
Aug 27
|
Sunny
|
86°F |
3 to 9 mph
NW
|
|
Thursday Night
Aug 27
|
Mostly Clear
|
62°F |
1 to 7 mph
NNW
|
|
Friday
Aug 28
|
Sunny
|
86°F |
0 to 5 mph
NNW
|
|
Friday Night
Aug 28
|
Mostly Clear
|
63°F |
3 mph
E
|
|
Saturday
Aug 29
|
Mostly Sunny
|
87°F |
3 to 8 mph
SSE
|
|
Saturday Night
Aug 29
|
Partly Cloudy then Chance Showers And Thunderstorms
|
68°F |
7 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Assumption.
