Frost dates for Douglas Bisbee Inl Airport, AZ
At Douglas Bisbee Inl Airport, the median last spring frost (32°F) is Apr 11 and the median first fall frost is Nov 2, for a typical growing season of 203 days. For a 90% chance that the last frost has passed, wait until Apr 27. Nearby ZIP codes are in USDA hardiness zone 8a.
- Apr 11Last spring frost (median)50% chance of 32°F after this date
- Apr 27Safer planting date10% chance of 32°F after this date
- Nov 2First fall frost (median)50% chance of 32°F by this date
- 203 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 11 | Apr 25 | May 8 |
| 32°F | Mar 27 | Apr 11 | Apr 27 |
| 28°F | Mar 4 | Mar 27 | Apr 15 |
| 24°F | Feb 10 | Mar 5 | Mar 31 |
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 14 | Oct 25 | Nov 6 |
| 32°F | Oct 21 | Nov 2 | Nov 15 |
| 28°F | Oct 29 | Nov 12 | Nov 26 |
| 24°F | Nov 6 | Nov 22 | Dec 7 |
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 | 164 days | 182 days | 198 days |
| 32°F | 184 days | 203 days | 222 days |
| 28°F | 203 days | 227 days | 252 days |
| 24°F | 228 days | 257 days | 285 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 |
|---|---|---|---|
| 85608 | 8a | 10 to 15°F | 2 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 USW00093026, at 31.4583, -109.6061, elevation 1251 m (4,105 ft).
- Data quality: Standard (24+ years of data), 27 years of freeze data.
- Average days per year at or below 32°F: 75.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Douglas (14 km)
- Mc Neal (17 km)
- Bisbee 1wnw (31 km)
- Tombstone (52 km)
- Pearce - Sunsites (57 km)
- Portal 4 SW (61 km)
- Coronado Nmem (63 km)
- Paradise (64 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.