Frost dates for Lake City 1nne, CO
At Lake City 1nne, the median last spring frost (32°F) is Jun 9 and the median first fall frost is Sep 17, for a typical growing season of 99 days. For a 90% chance that the last frost has passed, wait until Jun 22. Nearby ZIP codes are in USDA hardiness zones 5a to 6a.
- Jun 9Last spring frost (median)50% chance of 32°F after this date
- Jun 22Safer planting date10% chance of 32°F after this date
- Sep 17First fall frost (median)50% chance of 32°F by this date
- 99 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 | Jun 9 | Jun 22 | Jul 7 |
| 32°F | May 27 | Jun 9 | Jun 22 |
| 28°F | May 14 | May 27 | Jun 10 |
| 24°F | Apr 30 | May 12 | May 29 |
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 21 | Sep 6 | Sep 17 |
| 32°F | Sep 5 | Sep 17 | Sep 28 |
| 28°F | Sep 14 | Sep 26 | Oct 7 |
| 24°F | Sep 23 | Oct 4 | Oct 17 |
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 | 51 days | 74 days | 92 days |
| 32°F | 82 days | 99 days | 114 days |
| 28°F | 102 days | 121 days | 139 days |
| 24°F | 123 days | 143 days | 161 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
Closest ZIP codes (each is closer to another station)
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 81235 | 5a | -20 to -15°F | 13 km |
| 81243 | 5b | -15 to -10°F | 26 km |
| 81427 | 5b | -15 to -10°F | 27 km |
| 81220 | 5b | -15 to -10°F | 31 km |
| 81432 | 6a | -10 to -5°F | 40 km |
| 81130 | 5a | -20 to -15°F | 43 km |
| 81433 | 5a | -20 to -15°F | 44 km |
| 81230 | 5b | -15 to -10°F | 49 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 USC00054736, at 38.0522, -107.3036, elevation 2656 m (8,714 ft).
- Data quality: Estimated from nearby stations (2+ years), 6 years of freeze data.
- Average days per year at or below 32°F: 228.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Lake City (3 km)
- Santa Maria Rsvr (31 km)
- Ouray (32 km)
- Ouray #2 (32 km)
- Rio Grande Rsvr (37 km)
- Hermit 8 SE (38 km)
- Creede (40 km)
- Creede Water Plant (41 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.