Boulder Hill, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boulder Hill, a community in Kendall County, Illinois.
This Afternoon
73°F
Chance Rain Showers
A chance of rain showers. Partly sunny, with a high near 73. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
7-day forecast for Boulder Hill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Chance Rain Showers | 10 mph E | 36% |
| Tonight | 63°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 10 mph E | 43% |
| Saturday | 78°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 80% |
| Saturday Night | 65°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 5 to 10 mph ESE | 81% |
| Sunday | 70°F | Showers And Thunderstorms | 10 to 15 mph NNE | 81% |
| Sunday Night | 56°F | Rain Showers Likely | 15 mph NE | 66% |
| Monday | 65°F | Chance Rain Showers | 15 mph ENE | 51% |
| Monday Night | 52°F | Chance Rain Showers | 10 to 15 mph ENE | 31% |
| Tuesday | 64°F | Slight Chance Rain Showers | 10 to 15 mph NE | 24% |
| Tuesday Night | 51°F | Mostly Cloudy | 5 to 15 mph NE | 13% |
| Wednesday | 67°F | Partly Sunny | 10 mph NNE | 6% |
| Wednesday Night | 52°F | Partly Cloudy | 5 to 10 mph NNE | 4% |
| Thursday | 69°F | Partly Sunny | 5 to 10 mph NNE | 3% |
| Thursday Night | 53°F | Partly Cloudy | 5 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Boulder Hill (41.710, -88.334). Updated through the day.
Growing snapshot for Boulder Hill
Last spring frost
Apr 19
First fall frost
Oct 23
Growing season
185 days
Hardiness zone
5b
More local growing data for Boulder Hill: nearby ZIP 60538 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Aurora, Il (3.9 mi from Boulder Hill). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.