Lake Summerset, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Lake Summerset, IL in one place.
Sunny, with a high near 74.
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: Apr 20, 2026 4:59 AM CDT.
The active forecast window currently covers Apr 22 to Apr 26, 2026 for Lake Summerset, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 22 to Apr 26, 2026
- Latest sync
- Apr 20, 2026 4:59 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Lake Summerset
Thursday looks like the warmest upcoming period in Lake Summerset at 78 degrees F.
Saturday Night is the coolest period ahead with temperatures near 42 degrees F.
The strongest winds are forecast for Thursday at about 10 to 25 mph S.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 20, 2026 4:59 AM CDT
- Coverage
- 5 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 56.
Mostly sunny, with a high near 78.
Showers and thunderstorms after 7pm. Mostly cloudy, with a low around 58. Chance of precipitation is 80%.
Showers and thunderstorms. Mostly cloudy, with a high near 68. Chance of precipitation is 80%.
A chance of rain showers before 1am. Mostly cloudy, with a low around 44. Chance of precipitation is 40%.
Mostly sunny, with a high near 64.
A slight chance of rain showers after 7pm. Partly cloudy, with a low around 42.
A slight chance of rain showers. Mostly sunny, with a high near 62.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 22
|
Sunny
|
74°F |
5 to 10 mph
E
|
|
Wednesday Night
Apr 22
|
Partly Cloudy
|
56°F |
10 mph
SE
|
|
Thursday
Apr 23
|
Mostly Sunny
|
78°F |
10 to 25 mph
S
|
|
Thursday Night
Apr 23
|
Showers And Thunderstorms
|
58°F |
15 to 20 mph
S
|
|
Friday
Apr 24
|
Showers And Thunderstorms
|
68°F |
15 mph
W
|
|
Friday Night
Apr 24
|
Chance Rain Showers
|
44°F |
10 to 15 mph
NW
|
|
Saturday
Apr 25
|
Mostly Sunny
|
64°F |
10 to 15 mph
N
|
|
Saturday Night
Apr 25
|
Slight Chance Rain Showers
|
42°F |
5 to 10 mph
N
|
|
Sunday
Apr 26
|
Slight Chance Rain Showers
|
62°F |
10 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lake Summerset.