Last frost date in Yorkville, Illinois
April 28
Average last frost in spring. In an early year (1 in 10) it's over by April 14; in a late year (1 in 10) it comes after May 11.
October 13
Average first frost in fall. 1 year in 10 it comes by September 27.
Source: NOAA U.S. Climate Normals 1991–2020, station Chicago Aurora Muni AP (USW00004808), 8 miles from Yorkville, elevation 710 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Plano, so its frost dates are the same as Yorkville's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 14 | Apr 28 | May 11 |
| First frost in fall | Sept 27 | Oct 13 | Oct 24 |
Frost-free days in an average year: 166
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 6 | Oct 2 |
| Frost (32°F) | Every year | Apr 28 | Oct 13 |
| Hard freeze (28°F) | Every year | Apr 18 | Oct 23 |
Nights at 32°F or colder in an average year: 142
What to plant now in Yorkville
- Spring planting calendar for an average last frost around April 30 Yorkville: April 28
- Fall planting calendar for an average first frost around October 10 Yorkville: October 13
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
- Aurora 10 mi · last frost Apr 19
- Naperville 15 mi · last frost Apr 28
- Bolingbrook 17 mi · last frost Apr 20
- Joliet 18 mi · last frost Apr 19
- Channahon 19 mi · last frost Apr 16
Updated