South Barrington, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Barrington, a village in Cook County, Illinois.
Today
63°F
Slight Chance Drizzle then Slight Chance Rain Showers
A slight chance of drizzle before noon, then a slight chance of rain showers and a slight chance of drizzle. Mostly cloudy. High near 63, with temperatures falling to around 55 in the afternoon. West southwest wind around 15 mph, with gusts as high as 25 mph.
7-day forecast for South Barrington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 63°F | Slight Chance Drizzle then Slight Chance Rain Showers | 15 mph WSW | 9% |
| Tonight | 45°F | Slight Chance Rain Showers then Slight Chance Rain | 10 to 15 mph SW | 15% |
| Thursday | 55°F | Rain Likely | 10 to 15 mph W | 62% |
| Thursday Night | 38°F | Chance Rain then Mostly Cloudy | 10 mph NNW | 47% |
| Friday | 49°F | Partly Sunny | 10 to 15 mph NNW | 2% |
| Friday Night | 34°F | Partly Cloudy | 5 to 10 mph NNW | 0% |
| Saturday | 51°F | Sunny | 5 mph NW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 5 mph W | 0% |
| Sunday | 55°F | Sunny | 5 to 10 mph W | 6% |
| Sunday Night | 35°F | Mostly Clear | 5 mph W | 0% |
| Monday | 60°F | Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 40°F | Partly Cloudy | 5 to 10 mph WSW | 1% |
| Tuesday | 61°F | Sunny | 5 mph WNW | 0% |
| Tuesday Night | 39°F | Partly Cloudy | 0 to 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for South Barrington (42.089, -88.157). Updated through the day.
Growing snapshot for South Barrington
Last spring frost
Apr 30
First fall frost
Oct 13
Growing season
163 days
Hardiness zone
5b
More local growing data for South Barrington: nearby ZIP 60192 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Streamwood, Il (2.9 mi from South Barrington). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.