Last frost date in Palatine, Illinois
April 25
Average last frost in spring. In an early year (1 in 10) it's over by April 10; in a late year (1 in 10) it comes after May 12.
October 19
Average first frost in fall. 1 year in 10 it comes by October 5.
Source: NOAA U.S. Climate Normals 1991–2020, station Barrington 3SW (USC00110442), 6.1 miles from Palatine, elevation 875 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Barrington, so its frost dates are the same as Palatine's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 10 | Apr 25 | May 12 |
| First frost in fall | Oct 5 | Oct 19 | Nov 1 |
Frost-free days in an average year: 177
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 6 | Oct 11 |
| Frost (32°F) | Every year | Apr 25 | Oct 19 |
| Hard freeze (28°F) | Every year | Apr 12 | Oct 30 |
Nights at 32°F or colder in an average year: 137
What to plant now in Palatine
- Spring planting calendar for an average last frost around April 20 Palatine: April 25
- Fall planting calendar for an average first frost around October 20 Palatine: 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
- Arlington Heights 3 mi · last frost Apr 19
- Schaumburg 6 mi · last frost Apr 30
- Des Plaines 9 mi · last frost Apr 16
- Mundelein 11 mi · last frost Apr 29
- Carol Stream 14 mi · last frost Apr 25
Updated