Last frost date in Monument, Colorado
May 17
Average last frost in spring. In an early year (1 in 10) it's over by May 5; in a late year (1 in 10) it comes after May 30.
October 1
Average first frost in fall. 1 year in 10 it comes by September 19.
Source: NOAA U.S. Climate Normals 1991–2020, station Monument 3S (USC00055733), 1.8 miles from Monument, elevation 6,821 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | May 5 | May 17 | May 30 |
| First frost in fall | Sept 19 | Oct 1 | Oct 12 |
Frost-free days in an average year: 136
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 29 | Sept 23 |
| Frost (32°F) | Every year | May 17 | Oct 1 |
| Hard freeze (28°F) | Every year | May 6 | Oct 9 |
Nights at 32°F or colder in an average year: 183
What to plant now in Monument
- Spring planting calendar for an average last frost around May 20 Monument: May 17
- Fall planting calendar for an average first frost around September 30 Monument: October 1
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
- Colorado Springs 15 mi · last frost May 3
- Castle Rock 21 mi · last frost May 9
- Parker 30 mi · last frost May 9
- Centennial 36 mi · last frost May 5
- Littleton 37 mi · last frost May 2
Updated