Last frost date in Aurora, Illinois
April 19
Average last frost in spring. In an early year (1 in 10) it's over by April 5; in a late year (1 in 10) it comes after May 4.
October 23
Average first frost in fall. 1 year in 10 it comes by October 9.
Source: NOAA U.S. Climate Normals 1991–2020, station Aurora (USC00110338), 1.5 miles from Aurora, 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 Batavia, Montgomery, North Aurora and Oswego, so their frost dates are the same as Aurora's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 5 | Apr 19 | May 4 |
| First frost in fall | Oct 9 | Oct 23 | Nov 3 |
Frost-free days in an average year: 185
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 1 | Oct 13 |
| Frost (32°F) | Every year | Apr 19 | Oct 23 |
| Hard freeze (28°F) | Every year | Apr 8 | Nov 2 |
Nights at 32°F or colder in an average year: 134
What to plant now in Aurora
- Spring planting calendar for an average last frost around April 20 Aurora: April 19
- Fall planting calendar for an average first frost around October 20 Aurora: October 23
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 7 mi · last frost Apr 28
- Yorkville 10 mi · last frost Apr 28
- Bolingbrook 11 mi · last frost Apr 20
- Carol Stream 14 mi · last frost Apr 25
- Joliet 19 mi · last frost Apr 19
Updated