Lake Summerset, IL Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Lake Summerset, IL in one place.
Partly sunny, with a high near 65. Northeast wind 5 to 10 mph, with gusts as high as 20 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: Sep 22, 2026 9:30 AM CDT.
The active forecast window currently covers Sep 23 to Sep 28, 2026 for Lake Summerset, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 23 to Sep 28, 2026
- Latest sync
- Sep 22, 2026 9:30 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 71 degrees F.
Friday Night is the coolest period ahead with temperatures near 47 degrees F.
The strongest winds are forecast for Wednesday at about 5 to 10 mph NE.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 22, 2026 9:30 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 49. Northeast wind 5 to 10 mph.
Partly sunny, with a high near 64.
Mostly cloudy, with a low around 49.
Partly sunny, with a high near 65.
Mostly cloudy, with a low around 47.
Partly sunny, with a high near 64.
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 50.
A slight chance of rain showers before 7am. Mostly cloudy, with a high near 68.
Mostly cloudy, with a low around 53.
Mostly sunny, with a high near 71.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 57.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 23
|
Partly Sunny
|
65°F |
5 to 10 mph
NE
|
|
Wednesday Night
Sep 23
|
Partly Cloudy
|
49°F |
5 to 10 mph
NE
|
|
Thursday
Sep 24
|
Partly Sunny
|
64°F |
5 mph
E
|
|
Thursday Night
Sep 24
|
Mostly Cloudy
|
49°F |
0 to 5 mph
E
|
|
Friday
Sep 25
|
Partly Sunny
|
65°F |
5 mph
E
|
|
Friday Night
Sep 25
|
Mostly Cloudy
|
47°F |
5 mph
E
|
|
Saturday
Sep 26
|
Partly Sunny
|
64°F |
0 to 5 mph
SE
|
|
Saturday Night
Sep 26
|
Mostly Cloudy then Slight Chance Rain Showers
|
50°F |
5 mph
SE
|
|
Sunday
Sep 27
|
Slight Chance Rain Showers then Mostly Cloudy
|
68°F |
5 mph
S
|
|
Sunday Night
Sep 27
|
Mostly Cloudy
|
53°F |
0 to 5 mph
SE
|
|
Monday
Sep 28
|
Mostly Sunny
|
71°F |
0 to 5 mph
SE
|
|
Monday Night
Sep 28
|
Partly Cloudy then Slight Chance Rain Showers
|
57°F |
5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lake Summerset.