Capron, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Capron, a village in Boone County, Illinois.
This Afternoon
67°F
Rain
Rain and a slight chance of thunderstorms. Cloudy. High near 67, with temperatures falling to around 65 in the afternoon. South wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Capron
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Rain | 15 to 20 mph S | 79% |
| Tonight | 58°F | Rain | 15 mph S | 85% |
| Wednesday | 61°F | Rain Likely | 15 mph SSW | 58% |
| Wednesday Night | 46°F | Chance Rain | 15 mph SW | 30% |
| Thursday | 54°F | Rain Likely | 10 to 15 mph WSW | 57% |
| Thursday Night | 40°F | Chance Rain | 5 to 10 mph NW | 42% |
| Friday | 50°F | Slight Chance Rain then Mostly Cloudy | 10 mph N | 19% |
| Friday Night | 32°F | Partly Cloudy | 0 to 5 mph N | 2% |
| Saturday | 51°F | Mostly Sunny | 0 to 5 mph WNW | 2% |
| Saturday Night | 32°F | Partly Cloudy | 0 mph | 6% |
| Sunday | 57°F | Mostly Sunny then Slight Chance Rain | 5 to 10 mph W | 17% |
| Sunday Night | 34°F | Mostly Clear | 0 to 5 mph W | 6% |
| Monday | 60°F | Sunny | 0 to 15 mph WSW | 2% |
| Monday Night | 38°F | Mostly Clear | 5 to 10 mph W | 1% |
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 Nov 3, 2026.