Frost dates for Eastonville 2 NNW, CO
At Eastonville 2 NNW, the median last spring frost (32°F) is May 29 and the median first fall frost is Sep 21, for a typical growing season of 114 days. For a 90% chance that the last frost has passed, wait until Jun 13. Nearby ZIP codes are in USDA hardiness zone 5b.
- May 29Last spring frost (median)50% chance of 32°F after this date
- Jun 13Safer planting date10% chance of 32°F after this date
- Sep 21First fall frost (median)50% chance of 32°F by this date
- 114 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | May 30 | Jun 11 | Jun 25 |
| 32°F | May 15 | May 29 | Jun 13 |
| 28°F | May 2 | May 14 | May 30 |
| 24°F | Apr 18 | May 2 | May 15 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Sep 1 | Sep 12 | Sep 22 |
| 32°F | Sep 9 | Sep 21 | Oct 1 |
| 28°F | Sep 16 | Sep 29 | Oct 10 |
| 24°F | Sep 25 | Oct 7 | Oct 20 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 74 days | 91 days | 108 days |
| 32°F | 96 days | 114 days | 132 days |
| 28°F | 115 days | 137 days | 154 days |
| 24°F | 138 days | 156 days | 174 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 80106 | 5b | -15 to -10°F | 11 km |
| 80831 | 5b | -15 to -10°F | 17 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USC00052494, at 39.1092, -104.5997, elevation 2198 m (7,210 ft).
- Data quality: Estimated from nearby stations (2+ years), 9 years of freeze data.
- Average days per year at or below 32°F: 212.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Black Forest 6wnw (20 km)
- Cumbre Vista - Colorado Springs 1 (20 km)
- Monument (23 km)
- Monument 3s (24 km)
- Elizabeth 2nw (30 km)
- Colorado Springs Muni Airport (34 km)
- Castle Rock (43 km)
- Ruxton Park (44 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.