Carol Stream, IL Weather & Growing Conditions
Overnight
64°F
Mostly Clear
Mostly clear, with a low around 64. South southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Mostly Clear | 5 mph SSW | 0% |
| Tuesday | 85°F | Mostly Sunny | 5 to 10 mph SSW | 2% |
| Tuesday Night | 68°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 mph SSW | 36% |
| Wednesday | 80°F | Showers And Thunderstorms Likely | 5 mph WSW | 73% |
| Wednesday Night | 64°F | Showers And Thunderstorms | 0 to 5 mph WNW | 88% |
| Thursday | 78°F | Rain Showers Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 64% |
| Thursday Night | 62°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSE | 22% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph S | 5% |
| Friday Night | 64°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SSW | 15% |
| Saturday | 84°F | Mostly Sunny | 5 to 10 mph SW | 10% |
| Saturday Night | 68°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 19% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms | 5 to 15 mph SW | 19% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 42% |
| Monday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 42% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Carol Stream, IL
Last spring frost
Apr 25
First fall frost
Oct 19
Growing season
174 days
Hardiness zone
5b
Explore more for Carol Stream, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, West Chicago Dupage Ap, Il (6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.