Frost dates for Mc Neal, AZ
At Mc Neal, the median last spring frost (32°F) is Apr 6 and the median first fall frost is Nov 10, for a typical growing season of 215 days. For a 90% chance that the last frost has passed, wait until Apr 24. Nearby ZIP codes are in USDA hardiness zone 8b.
- Apr 6Last spring frost (median)50% chance of 32°F after this date
- Apr 24Safer planting date10% chance of 32°F after this date
- Nov 10First fall frost (median)50% chance of 32°F by this date
- 215 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 5 | Apr 20 | May 2 |
| 32°F | Mar 12 | Apr 6 | Apr 24 |
| 28°F | Feb 14 | Mar 10 | Apr 11 |
| 24°F | Jan 15 | Feb 11 | Mar 9 |
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 17 | Oct 30 | Nov 13 |
| 32°F | Oct 25 | Nov 10 | Nov 26 |
| 28°F | Nov 5 | Nov 23 | Dec 9 |
| 24°F | Nov 20 | Dec 6 | Dec 28 |
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 | 172 days | 190 days | 209 days |
| 32°F | 193 days | 215 days | 243 days |
| 28°F | 218 days | 252 days | 286 days |
| 24°F | 259 days | 298 days | 330 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 |
|---|---|---|---|
| 85617 | 8b | 15 to 20°F | 5 km |
| 85610 | 8b | 15 to 20°F | 16 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 USC00025418, at 31.6017, -109.6686, elevation 1271 m (4,170 ft).
- Data quality: Estimated from nearby stations (2+ years), 9 years of freeze data.
- Average days per year at or below 32°F: 63.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Douglas Bisbee Inl Airport (17 km)
- Bisbee 1wnw (30 km)
- Douglas (31 km)
- Tombstone (40 km)
- Pearce - Sunsites (40 km)
- Chiricahua National Monument (54 km)
- Portal 4 SW (54 km)
- Paradise (56 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.