Clear Lake, IL Weather Forecast
Local 7-day forecast
Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Clear Lake, IL in one place.
Mostly cloudy, with a high near 71. East wind around 5 mph.
Local Weather Overview
This forecast page for Clear Lake, 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 24, 2026 9:03 AM CDT.
The active forecast window currently covers Sep 25 to Sep 30, 2026 for Clear Lake, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 25 to Sep 30, 2026
- Latest sync
- Sep 24, 2026 9:03 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Clear Lake
Tuesday looks like the warmest upcoming period in Clear Lake at 81 degrees F.
Sunday Night is the coolest period ahead with temperatures near 55 degrees F.
The strongest winds are forecast for Wednesday at about 14 mph SW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 24, 2026 9:03 AM 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 cloudy, with a low around 57. East northeast wind around 5 mph.
Mostly cloudy, with a high near 72. East southeast wind around 5 mph.
A chance of rain showers after 1am. Mostly cloudy, with a low around 58. East southeast wind around 3 mph. Chance of precipitation is 30%.
A chance of rain showers before 1pm. Partly sunny, with a high near 74. East southeast wind around 5 mph. Chance of precipitation is 30%.
Partly cloudy, with a low around 55.
Mostly sunny, with a high near 76.
Mostly clear, with a low around 58.
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81.
Showers and thunderstorms likely. Mostly cloudy, with a low around 66.
Rain showers likely. Mostly cloudy, with a high near 77.
A chance of rain showers. Mostly cloudy, with a low around 62.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Sep 25
|
Mostly Cloudy
|
71°F |
5 mph
E
|
|
Friday Night
Sep 25
|
Mostly Cloudy
|
57°F |
5 mph
ENE
|
|
Saturday
Sep 26
|
Mostly Cloudy
|
72°F |
5 mph
ESE
|
|
Saturday Night
Sep 26
|
Mostly Cloudy then Chance Rain Showers
|
58°F |
3 mph
ESE
|
|
Sunday
Sep 27
|
Chance Rain Showers
|
74°F |
5 mph
ESE
|
|
Sunday Night
Sep 27
|
Partly Cloudy
|
55°F |
3 mph
E
|
|
Monday
Sep 28
|
Mostly Sunny
|
76°F |
3 mph
ESE
|
|
Monday Night
Sep 28
|
Mostly Clear
|
58°F |
6 mph
ESE
|
|
Tuesday
Sep 29
|
Mostly Sunny then Chance Showers And Thunderstorms
|
81°F |
7 to 10 mph
SSE
|
|
Tuesday Night
Sep 29
|
Showers And Thunderstorms Likely
|
66°F |
9 to 13 mph
S
|
|
Wednesday
Sep 30
|
Rain Showers Likely
|
77°F |
14 mph
SW
|
|
Wednesday Night
Sep 30
|
Chance Rain Showers
|
62°F |
5 to 9 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Clear Lake.