Last frost date in Waukegan, Illinois
April 30
Average last frost in spring. In an early year (1 in 10) it's over by April 15; in a late year (1 in 10) it comes after May 14.
October 19
Average first frost in fall. 1 year in 10 it comes by September 30.
Source: NOAA U.S. Climate Normals 1991–2020, station Waukegan (USC00119029), 1.5 miles from Waukegan, elevation 700 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Gurnee and North Chicago, so their frost dates are the same as Waukegan's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 15 | Apr 30 | May 14 |
| First frost in fall | Sept 30 | Oct 19 | Nov 3 |
Frost-free days in an average year: 170
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 8 | Oct 8 |
| Frost (32°F) | Every year | Apr 30 | Oct 19 |
| Hard freeze (28°F) | Every year | Apr 20 | Oct 30 |
Nights at 32°F or colder in an average year: 133
What to plant now in Waukegan
- Spring planting calendar for an average last frost around April 30 Waukegan: April 30
- Fall planting calendar for an average first frost around October 20 Waukegan: October 19
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
- Zion 6 mi · last frost Apr 30
- Mundelein 10 mi · last frost Apr 29
- Round Lake Beach 11 mi · last frost Apr 24
- Antioch 12 mi · last frost Apr 23
- Palatine 20 mi · last frost Apr 25
Updated