Lake Barrington, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Lake Barrington, IL in one place.
Sunny, with a high near 51.
Local Weather Overview
This forecast page for Lake Barrington, 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 15, 2026 3:52 PM CDT.
The active forecast window currently covers Apr 19 to Apr 21, 2026 for Lake Barrington, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 19 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 3:52 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Lake Barrington
Tuesday looks like the warmest upcoming period in Lake Barrington at 71 degrees F.
Sunday Night is the coolest period ahead with temperatures near 32 degrees F.
The strongest winds are forecast for Tuesday at about 15 to 20 mph WSW.
The forecast from Apr 19 through Apr 21 stays mostly dry.
Forecast Details
- Last updated
- Apr 15, 2026 3:52 PM CDT
- Coverage
- 3 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Patchy frost after 4am. Partly cloudy, with a low around 32.
Patchy frost before 8am. Sunny, with a high near 58.
Partly cloudy, with a low around 47.
Mostly sunny, with a high near 71.
Mostly clear, with a low around 48.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Apr 19
|
Sunny
|
51°F |
10 to 15 mph
WNW
|
|
Sunday Night
Apr 19
|
Partly Cloudy then Patchy Frost
|
32°F |
5 to 10 mph
NNW
|
|
Monday
Apr 20
|
Patchy Frost then Sunny
|
58°F |
5 to 15 mph
ESE
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
47°F |
10 to 15 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
71°F |
15 to 20 mph
WSW
|
|
Tuesday Night
Apr 21
|
Mostly Clear
|
48°F |
10 to 15 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lake Barrington.