Last frost date in Aurora, Colorado
May 7
Average last frost in spring. In an early year (1 in 10) it's over by April 26; in a late year (1 in 10) it comes after May 21.
October 8
Average first frost in fall. 1 year in 10 it comes by September 25.
Source: NOAA U.S. Climate Normals 1991–2020, station Cherry Creek Dam (USC00051547), 8.3 miles from Aurora, elevation 5,647 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Greenwood Village, so its frost dates are the same as Aurora's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 26 | May 7 | May 21 |
| First frost in fall | Sept 25 | Oct 8 | Oct 19 |
Frost-free days in an average year: 152
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 18 | Sept 30 |
| Frost (32°F) | Every year | May 7 | Oct 8 |
| Hard freeze (28°F) | Every year | Apr 29 | Oct 15 |
Nights at 32°F or colder in an average year: 172
What to plant now in Aurora
- Spring planting calendar for an average last frost around May 10 Aurora: May 7
- Fall planting calendar for an average first frost around October 10 Aurora: October 8
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
- Denver 9 mi · last frost May 4
- Centennial 11 mi · last frost May 5
- Commerce City 13 mi · last frost May 3
- Parker 14 mi · last frost May 9
- Littleton 18 mi · last frost May 2
Updated