Boulder Hill, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boulder Hill, a community in Kendall County, Illinois.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. South southwest wind 5 to 10 mph.
7-day forecast for Boulder Hill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 5 to 10 mph SSW | 1% |
| Tonight | 67°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 mph SSW | 32% |
| Wednesday | 80°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph WSW | 70% |
| Wednesday Night | 65°F | Showers And Thunderstorms | 5 mph WNW | 88% |
| Thursday | 79°F | Rain Showers Likely then Chance Showers And Thunderstorms | 0 to 5 mph ESE | 66% |
| Thursday Night | 62°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSE | 29% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph SSW | 6% |
| Friday Night | 64°F | Mostly Clear | 0 to 5 mph S | 9% |
| Saturday | 84°F | Mostly Sunny | 5 to 10 mph SSW | 11% |
| Saturday Night | 68°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 18% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SW | 18% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 36% |
| Monday | 85°F | Chance Rain Showers | 5 to 10 mph SSW | 36% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 10 mph W | 43% |
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 Aug 4, 2026.