Frost dates for La Junta Muni Airport, CO
At La Junta Muni Airport, the median last spring frost (32°F) is Apr 24 and the median first fall frost is Oct 15, for a typical growing season of 173 days. For a 90% chance that the last frost has passed, wait until May 6. Nearby ZIP codes are in USDA hardiness zones 5b to 6a.
- Apr 24Last spring frost (median)50% chance of 32°F after this date
- May 6Safer planting date10% chance of 32°F after this date
- Oct 15First fall frost (median)50% chance of 32°F by this date
- 173 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 | Apr 21 | May 4 | May 16 |
| 32°F | Apr 10 | Apr 24 | May 6 |
| 28°F | Mar 29 | Apr 12 | Apr 26 |
| 24°F | Mar 12 | Apr 1 | Apr 16 |
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 26 | Oct 7 | Oct 18 |
| 32°F | Oct 3 | Oct 15 | Oct 25 |
| 28°F | Oct 10 | Oct 23 | Nov 4 |
| 24°F | Oct 18 | Nov 1 | Nov 14 |
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 | 137 days | 155 days | 170 days |
| 32°F | 153 days | 173 days | 191 days |
| 28°F | 177 days | 194 days | 213 days |
| 24°F | 193 days | 215 days | 236 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 |
|---|---|---|---|
| 81030 | 6a | -10 to -5°F | 6 km |
| 81077 | 6a | -10 to -5°F | 9 km |
| 81067 | 6a | -10 to -5°F | 19 km |
| 81050 | 6a | -10 to -5°F | 22 km |
| 81054 | 6a | -10 to -5°F | 32 km |
| 81058 | 6a | -10 to -5°F | 33 km |
| 81076 | 5b | -15 to -10°F | 34 km |
| 81021 | 5b | -15 to -10°F | 43 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 USW00023067, at 38.0494, -103.5122, elevation 1278 m (4,194 ft).
- Data quality: Standard (24+ years of data), 29 years of freeze data.
- Average days per year at or below 32°F: 144.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Cheraw 1 N (7 km)
- La Junta (8 km)
- Rocky Ford 2 SE (16 km)
- Las Animas (26 km)
- Ordway 1 ENE (27 km)
- La Junta 20 S (33 km)
- La Junta 17 WSW (34 km)
- John Martin Dam (51 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.