Frost dates for Virginia Dale 7 ENE, CO
At Virginia Dale 7 ENE, the median last spring frost (32°F) is May 31 and the median first fall frost is Sep 19, for a typical growing season of 110 days. For a 90% chance that the last frost has passed, wait until Jun 15. Nearby ZIP codes are in USDA hardiness zone 5b.
- May 31Last spring frost (median)50% chance of 32°F after this date
- Jun 15Safer planting date10% chance of 32°F after this date
- Sep 19First fall frost (median)50% chance of 32°F by this date
- 110 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 31 | Jun 14 | Jun 30 |
| 32°F | May 17 | May 31 | Jun 15 |
| 28°F | May 3 | May 16 | May 31 |
| 24°F | Apr 20 | May 2 | May 17 |
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 | Aug 23 | Sep 8 | Sep 22 |
| 32°F | Sep 5 | Sep 19 | Oct 1 |
| 28°F | Sep 14 | Sep 29 | Oct 12 |
| 24°F | Sep 23 | Oct 8 | Oct 25 |
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 | 64 days | 87 days | 107 days |
| 32°F | 89 days | 110 days | 130 days |
| 28°F | 113 days | 134 days | 153 days |
| 24°F | 137 days | 157 days | 176 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 |
|---|---|---|---|
| 82059 | 5b | -15 to -10°F | 10 km |
| 80536 | 5b | -15 to -10°F | 17 km |
| 80549 | 5b | -15 to -10°F | 19 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 USC00058690, at 40.9656, -105.2186, elevation 2138 m (7,015 ft).
- Data quality: Representative (10+ years), 22 years of freeze data.
- Average days per year at or below 32°F: 202.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Buckhorn Mountain 1 E (39 km)
- Nunn 7 NNE (43 km)
- Fort Collins (45 km)
- Fort Collins 4 E (46 km)
- Rustic 9wsw (51 km)
- Hourglass Rsvr (55 km)
- Waterdale (60 km)
- Loveland 2n (60 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.