Capron, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Capron, a village in Boone County, Illinois.
Tonight
61°F
Slight Chance Rain Showers then Showers And Thunderstorms Likely
A slight chance of rain showers between 11pm and midnight, then showers and thunderstorms likely between midnight and 5am, then showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 61. East southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Capron
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 61°F | Slight Chance Rain Showers then Showers And Thunderstorms Likely | 10 mph ESE | 76% |
| Saturday | 74°F | Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph ESE | 94% |
| Saturday Night | 61°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 5 to 10 mph NE | 76% |
| Sunday | 66°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 66% |
| Sunday Night | 54°F | Chance Rain Showers | 10 to 15 mph NE | 43% |
| Monday | 62°F | Chance Rain Showers | 15 mph ENE | 37% |
| Monday Night | 49°F | Chance Rain Showers | 10 to 15 mph NE | 37% |
| Tuesday | 61°F | Slight Chance Rain Showers | 10 to 15 mph NE | 21% |
| Tuesday Night | 48°F | Mostly Cloudy | 5 to 10 mph NE | 11% |
| Wednesday | 64°F | Partly Sunny | 5 to 10 mph NE | 6% |
| Wednesday Night | 49°F | Partly Cloudy | 0 to 10 mph NNE | 4% |
| Thursday | 66°F | Partly Sunny | 0 to 5 mph NNE | 5% |
| Thursday Night | 50°F | Mostly Cloudy | 0 to 5 mph NE | 4% |
| Friday | 68°F | Mostly Sunny | 0 to 5 mph NE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Capron (42.399, -88.739). Updated through the day.
Growing snapshot for Capron
Last spring frost
Apr 30
First fall frost
Oct 10
Growing season
161 days
Hardiness zone
5b
More local growing data for Capron: nearby ZIP 61012 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Clinton Wwtp, Wi (11.7 mi from Capron). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.