Carpentersville, IL Weather & Growing Conditions
This Afternoon
69°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Cloudy, with a high near 69. East southeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Showers And Thunderstorms Likely | 5 mph ESE | 74% |
| Tonight | 63°F | Showers And Thunderstorms | 5 mph NNE | 100% |
| Sunday | 65°F | Showers And Thunderstorms | 10 to 15 mph NE | 87% |
| Sunday Night | 55°F | Slight Chance Rain Showers | 10 to 15 mph NE | 19% |
| Monday | 63°F | Chance Rain Showers | 15 mph ENE | 38% |
| Monday Night | 51°F | Chance Rain Showers | 10 to 15 mph ENE | 32% |
| Tuesday | 61°F | Chance Rain Showers | 10 to 15 mph ENE | 32% |
| Tuesday Night | 51°F | Mostly Cloudy | 5 to 10 mph NE | 14% |
| Wednesday | 63°F | Partly Sunny | 5 to 10 mph NE | 13% |
| Wednesday Night | 52°F | Mostly Cloudy | 0 to 5 mph NNE | 4% |
| Thursday | 66°F | Partly Sunny | 0 to 5 mph NE | 5% |
| Thursday Night | 53°F | Mostly Cloudy | 0 to 5 mph NE | 12% |
| Friday | 70°F | Partly Sunny | 0 to 5 mph NE | 10% |
| Friday Night | 52°F | Partly Cloudy | 0 to 5 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Carpentersville, IL
Last spring frost
Apr 26
First fall frost
Oct 18
Growing season
174 days
Hardiness zone
5b
Explore more for Carpentersville, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Elgin, Il (3.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.