Last frost date in Sterling, Colorado
April 30
Average last frost in spring. In an early year (1 in 10) it's over by April 16; in a late year (1 in 10) it comes after May 12.
October 9
Average first frost in fall. 1 year in 10 it comes by September 28.
Source: NOAA U.S. Climate Normals 1991–2020, station Sterling (USC00057950), 1 miles from Sterling, elevation 3,974 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 16 | Apr 30 | May 12 |
| First frost in fall | Sept 28 | Oct 9 | Oct 20 |
Frost-free days in an average year: 161
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 11 | Oct 1 |
| Frost (32°F) | Every year | Apr 30 | Oct 9 |
| Hard freeze (28°F) | Every year | Apr 18 | Oct 18 |
Nights at 32°F or colder in an average year: 164
What to plant now in Sterling
- Spring planting calendar for an average last frost around April 30 Sterling: April 30
- Fall planting calendar for an average first frost around October 10 Sterling: October 9
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
- Fort Morgan 40 mi · last frost May 6
- Greeley 84 mi · last frost May 2
- Windsor 91 mi · last frost May 3
- Fort Collins 98 mi · last frost May 2
- Commerce City 99 mi · last frost May 3
Updated