Last frost date in Bolingbrook, Illinois
April 20
Average last frost in spring. In an early year (1 in 10) it's over by April 7; in a late year (1 in 10) it comes after May 6.
October 22
Average first frost in fall. 1 year in 10 it comes by October 7.
Source: NOAA U.S. Climate Normals 1991–2020, station Romeoville WFO (USC00117457), 5.9 miles from Bolingbrook, elevation 660 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Crest Hill, Homer Glen, Lockport, Plainfield and Romeoville, so their frost dates are the same as Bolingbrook's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 7 | Apr 20 | May 6 |
| First frost in fall | Oct 7 | Oct 22 | Nov 3 |
Frost-free days in an average year: 184
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 1 | Oct 12 |
| Frost (32°F) | Every year | Apr 20 | Oct 22 |
| Hard freeze (28°F) | Every year | Apr 8 | Nov 1 |
Nights at 32°F or colder in an average year: 123
What to plant now in Bolingbrook
- Spring planting calendar for an average last frost around April 20 Bolingbrook: April 20
- Fall planting calendar for an average first frost around October 20 Bolingbrook: October 22
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5. How we match the table.
Nearby in Illinois
- Naperville 5 mi · last frost Apr 28
- Aurora 11 mi · last frost Apr 19
- Joliet 12 mi · last frost Apr 19
- Orland Park 14 mi · last frost Apr 19
- Carol Stream 16 mi · last frost Apr 25
Updated