Last frost date in Tinley Park, Illinois
April 23
Average last frost in spring. In an early year (1 in 10) it's over by April 9; in a late year (1 in 10) it comes after May 11.
October 20
Average first frost in fall. 1 year in 10 it comes by October 6.
Source: NOAA U.S. Climate Normals 1991–2020, station Park Forest (USC00116616), 8.2 miles from Tinley Park, 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 Calumet City, Chicago Heights, Country Club Hills, Dolton, Frankfort, Harvey, Hazel Crest, Homewood, Lansing, Markham, Matteson, Mokena, Oak Forest, Park Forest, Richton Park and South Holland, so their frost dates are the same as Tinley Park's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 9 | Apr 23 | May 11 |
| First frost in fall | Oct 6 | Oct 20 | Nov 1 |
Frost-free days in an average year: 179
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 5 | Oct 10 |
| Frost (32°F) | Every year | Apr 23 | Oct 20 |
| Hard freeze (28°F) | Every year | Apr 12 | Oct 30 |
Nights at 32°F or colder in an average year: 126
What to plant now in Tinley Park
- Spring planting calendar for an average last frost around April 20 Tinley Park: April 23
- Fall planting calendar for an average first frost around October 20 Tinley Park: October 20
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
- Orland Park 4 mi · last frost Apr 19
- Oak Lawn 10 mi · last frost Apr 10
- Bolingbrook 18 mi · last frost Apr 20
- Joliet 18 mi · last frost Apr 19
- Cicero 19 mi · last frost Apr 11
Updated