Frost dates for San Jon, NM
At San Jon, the median last spring frost (32°F) is Apr 18 and the median first fall frost is Oct 24, for a typical growing season of 187 days. For a 90% chance that the last frost has passed, wait until May 3. Nearby ZIP codes are in USDA hardiness zone 7a.
- Apr 18Last spring frost (median)50% chance of 32°F after this date
- May 3Safer planting date10% chance of 32°F after this date
- Oct 24First fall frost (median)50% chance of 32°F by this date
- 187 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 14 | Apr 29 | May 12 |
| 32°F | Apr 1 | Apr 18 | May 3 |
| 28°F | Mar 19 | Apr 6 | Apr 23 |
| 24°F | Mar 2 | Mar 22 | Apr 10 |
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 | Oct 1 | Oct 14 | Oct 27 |
| 32°F | Oct 11 | Oct 24 | Nov 4 |
| 28°F | Oct 20 | Nov 3 | Nov 17 |
| 24°F | Oct 30 | Nov 13 | Nov 29 |
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 | 148 days | 167 days | 186 days |
| 32°F | 167 days | 187 days | 208 days |
| 28°F | 189 days | 211 days | 233 days |
| 24°F | 212 days | 235 days | 258 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 |
|---|---|---|---|
| 88434 | 7a | 0 to 5°F | 1 km |
| 88411 | 7a | 0 to 5°F | 21 km |
| 88120 | 7a | 0 to 5°F | 25 km |
| 88112 | 7a | 0 to 5°F | 27 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 USC00297867, at 35.1086, -103.3283, elevation 1289 m (4,230 ft).
- Data quality: Standard (24+ years of data), 29 years of freeze data.
- Average days per year at or below 32°F: 100.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Tucumcari Muni Airport (26 km)
- Tucumcari 4 NE (34 km)
- Ragland 3 SSW (53 km)
- McCarty Rch (55 km)
- Clovis 13 N (58 km)
- Clovis (76 km)
- Melrose (80 km)
- Newkirk (85 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.