South Barrington, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for South Barrington, IL in one place.
Sunny. High near 55, with temperatures falling to around 53 in the afternoon. West wind 0 to 10 mph.
Local Weather Overview
This forecast page for South 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: Oct 17, 2026 10:35 AM CDT.
The active forecast window currently covers Oct 17 to Oct 23, 2026 for South Barrington, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 17 to Oct 23, 2026
- Latest sync
- Oct 17, 2026 10:35 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in South Barrington
Thursday looks like the warmest upcoming period in South Barrington at 74 degrees F.
Tonight is the coolest period ahead with temperatures near 36 degrees F.
The strongest winds are forecast for Sunday at about 10 to 15 mph SSW.
The forecast from Oct 17 through Oct 23 stays mostly dry.
Forecast Details
- Last updated
- Oct 17, 2026 10:35 AM CDT
- Coverage
- 7 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
Clear, with a low around 36. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunny. High near 62, with temperatures falling to around 60 in the afternoon. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Clear, with a low around 39. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunny, with a high near 66. South wind 0 to 5 mph.
Partly cloudy, with a low around 42.
Sunny, with a high near 70.
Mostly clear, with a low around 46.
Sunny, with a high near 72.
Partly cloudy, with a low around 49.
Mostly sunny, with a high near 74.
Partly cloudy, with a low around 51.
Mostly sunny, with a high near 74.
Partly cloudy, with a low around 52.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Oct 17
|
Sunny
|
55°F |
0 to 10 mph
W
|
|
Tonight
Oct 17
|
Clear
|
36°F |
5 to 10 mph
SW
|
|
Sunday
Oct 18
|
Sunny
|
62°F |
10 to 15 mph
SSW
|
|
Sunday Night
Oct 18
|
Clear
|
39°F |
5 to 10 mph
SSW
|
|
Monday
Oct 19
|
Sunny
|
66°F |
0 to 5 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
42°F |
0 to 5 mph
SE
|
|
Tuesday
Oct 20
|
Sunny
|
70°F |
0 to 5 mph
ESE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
46°F |
0 to 5 mph
ESE
|
|
Wednesday
Oct 21
|
Sunny
|
72°F |
0 to 5 mph
S
|
|
Wednesday Night
Oct 21
|
Partly Cloudy
|
49°F |
0 to 5 mph
S
|
|
Thursday
Oct 22
|
Mostly Sunny
|
74°F |
0 to 5 mph
S
|
|
Thursday Night
Oct 22
|
Partly Cloudy
|
51°F |
0 to 5 mph
ESE
|
|
Friday
Oct 23
|
Mostly Sunny
|
74°F |
0 to 5 mph
SE
|
|
Friday Night
Oct 23
|
Partly Cloudy
|
52°F |
5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around South Barrington.