Frost dates for Ruxton Park, CO
At Ruxton Park, the median last spring frost (32°F) is Jun 3 and the median first fall frost is Sep 17, for a typical growing season of 102 days. For a 90% chance that the last frost has passed, wait until Jun 23. Nearby ZIP codes are in USDA hardiness zones 5b to 6a.
- Jun 3Last spring frost (median)50% chance of 32°F after this date
- Jun 23Safer planting date10% chance of 32°F after this date
- Sep 17First fall frost (median)50% chance of 32°F by this date
- 102 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 |
|---|---|---|---|
| 32°F | May 21 | Jun 3 | Jun 23 |
| 28°F | May 9 | May 22 | Jun 6 |
| 24°F | Apr 30 | May 11 | May 26 |
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 |
|---|---|---|---|
| 32°F | Aug 30 | Sep 17 | Sep 30 |
| 28°F | Sep 11 | Sep 28 | Oct 12 |
| 24°F | Sep 21 | Oct 8 | Oct 21 |
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 | 45 days | 71 days | 96 days |
| 32°F | 75 days | 102 days | 120 days |
| 28°F | 107 days | 127 days | 147 days |
| 24°F | 124 days | 148 days | 169 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 |
|---|---|---|---|
| 80809 | 5b | -15 to -10°F | 3 km |
| 80829 | 5b | -15 to -10°F | 4 km |
| 80904 | 6a | -10 to -5°F | 9 km |
| 80819 | 5b | -15 to -10°F | 12 km |
| 80905 | 6a | -10 to -5°F | 12 km |
| 80919 | 5b | -15 to -10°F | 13 km |
| 80906 | 6a | -10 to -5°F | 13 km |
| 80926 | 6a | -10 to -5°F | 24 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 USC00057309, at 38.8417, -104.9742, elevation 2762 m (9,060 ft).
- Data quality: Representative (10+ years), 17 years of freeze data.
- Average days per year at or below 32°F: 240.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Cripple Creek 3nnw (20 km)
- Divide 4nw (25 km)
- Colorado Springs Muni Airport (25 km)
- Monument 3s (26 km)
- Black Forest 6wnw (26 km)
- Cumbre Vista - Colorado Springs 1 (26 km)
- Florissant Fossil Bed (28 km)
- Monument (30 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.