Lake Summerset, IL Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Lake Summerset, IL in one place.
Mostly sunny, with a high near 81. South wind 0 to 10 mph.
Local Weather Overview
This forecast page for Lake Summerset, 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 23, 2026 10:38 AM CDT.
The active forecast window currently covers Jul 24 to Jul 29, 2026 for Lake Summerset, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 24 to Jul 29, 2026
- Latest sync
- Jul 23, 2026 10:38 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Lake Summerset
Monday looks like the warmest upcoming period in Lake Summerset at 91 degrees F.
Friday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Monday at about 10 to 15 mph SW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 23, 2026 10:38 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 60. South wind 5 to 10 mph.
Partly sunny, with a high near 83.
Mostly clear, with a low around 67.
Mostly sunny, with a high near 90.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 91. Chance of precipitation is 30%.
Partly cloudy, with a low around 68.
Sunny, with a high near 87.
Partly cloudy, with a low around 64.
Sunny, with a high near 85.
Mostly clear, with a low around 64.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 24
|
Mostly Sunny
|
81°F |
0 to 10 mph
S
|
|
Friday Night
Jul 24
|
Partly Cloudy
|
60°F |
5 to 10 mph
S
|
|
Saturday
Jul 25
|
Partly Sunny
|
83°F |
5 to 10 mph
SW
|
|
Saturday Night
Jul 25
|
Mostly Clear
|
67°F |
5 to 10 mph
SW
|
|
Sunday
Jul 26
|
Mostly Sunny
|
90°F |
5 to 10 mph
SW
|
|
Sunday Night
Jul 26
|
Partly Cloudy then Chance Showers And Thunderstorms
|
72°F |
10 mph
SW
|
|
Monday
Jul 27
|
Chance Showers And Thunderstorms
|
91°F |
10 to 15 mph
SW
|
|
Monday Night
Jul 27
|
Partly Cloudy
|
68°F |
5 to 15 mph
NW
|
|
Tuesday
Jul 28
|
Sunny
|
87°F |
5 to 10 mph
N
|
|
Tuesday Night
Jul 28
|
Partly Cloudy
|
64°F |
5 to 10 mph
NE
|
|
Wednesday
Jul 29
|
Sunny
|
85°F |
5 mph
N
|
|
Wednesday Night
Jul 29
|
Mostly Clear
|
64°F |
5 mph
E
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lake Summerset.