Frost dates for Tucson Camp Ave Exp., AZ
At Tucson Camp Ave Exp., the median last spring frost (32°F) is Feb 20 and the median first fall frost is Nov 27, for a typical growing season of 280 days. For a 90% chance that the last frost has passed, wait until Mar 11. Nearby ZIP codes are in USDA hardiness zones 9a to 9b.
- Feb 20Last spring frost (median)50% chance of 32°F after this date
- Mar 11Safer planting date10% chance of 32°F after this date
- Nov 27First fall frost (median)50% chance of 32°F by this date
- 280 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 | Feb 19 | Mar 12 | Apr 5 |
| 32°F | Jan 30 | Feb 20 | Mar 11 |
| 28°F | Dec 29 | Jan 30 | Feb 24 |
| 24°F | Dec 9 | Jan 8 | Feb 6 |
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 | Nov 1 | Nov 16 | Dec 1 |
| 32°F | Nov 10 | Nov 27 | Dec 12 |
| 28°F | Nov 23 | Dec 10 | Jan 2 |
| 24°F | Dec 1 | Dec 25 | Jan 26 |
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 | 218 days | 247 days | 274 days |
| 32°F | 253 days | 280 days | 308 days |
| 28°F | 282 days | 316 days | 347 days |
| 24°F | 326 days | 359 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 98% |
| 24°F | 63% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 85718 | 9a | 20 to 25°F | 4 km |
| 85712 | 9b | 25 to 30°F | 6 km |
| 85750 | 9a | 20 to 25°F | 10 km |
| 85715 | 9b | 25 to 30°F | 11 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 USC00028796, at 32.2817, -110.9442, elevation 710 m (2,330 ft).
- Data quality: Representative (10+ years), 22 years of freeze data.
- Average days per year at or below 32°F: 26.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Tucson WFO (6 km)
- Tucson U Of A #1 (6 km)
- Tohono Chul (7 km)
- Catalina State Park (15 km)
- Tucson Intl Airport (17 km)
- Tucson 11 W (22 km)
- Saguaro National Park (23 km)
- Tucson 17 NW (24 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.