Last frost date in Littleton, Colorado
May 2
Average last frost in spring. In an early year (1 in 10) it's over by April 20; in a late year (1 in 10) it comes after May 17.
October 11
Average first frost in fall. 1 year in 10 it comes by September 27.
Source: NOAA U.S. Climate Normals 1991–2020, station Marston Fltr Plt (USC00055402), 3.2 miles from Littleton, elevation 5,610 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Englewood, so its frost dates are the same as Littleton's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 20 | May 2 | May 17 |
| First frost in fall | Sept 27 | Oct 11 | Oct 23 |
Frost-free days in an average year: 160
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 12 | Oct 2 |
| Frost (32°F) | Every year | May 2 | Oct 11 |
| Hard freeze (28°F) | Every year | Apr 23 | Oct 21 |
Nights at 32°F or colder in an average year: 147
What to plant now in Littleton
- Spring planting calendar for an average last frost around April 30 Littleton: May 2
- Fall planting calendar for an average first frost around October 10 Littleton: October 11
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 Colorado
- Centennial 8 mi · last frost May 5
- Lakewood 9 mi · last frost May 3
- Denver 14 mi · last frost May 4
- Parker 14 mi · last frost May 9
- Castle Rock 17 mi · last frost May 9
Updated