Frost dates for Quartzsite, AZ
At Quartzsite, the median last spring frost (32°F) is Jan 28 and the median first fall frost is Dec 6, for a typical growing season of 315 days. For a 90% chance that the last frost has passed, wait until Feb 24. Nearby ZIP codes are in USDA hardiness zone 9a.
- Jan 28Last spring frost (median)50% chance of 32°F after this date
- Feb 24Safer planting date10% chance of 32°F after this date
- Dec 6First fall frost (median)50% chance of 32°F by this date
- 315 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 | Jan 25 | Feb 17 | Mar 7 |
| 32°F | Dec 31 | Jan 28 | Feb 24 |
| 28°F | Dec 13 | Jan 7 | Feb 5 |
| 24°F | Dec 14 | Jan 2 | Jan 22 |
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 13 | Nov 27 | Dec 12 |
| 32°F | Nov 22 | Dec 6 | Dec 26 |
| 28°F | Dec 1 | Dec 21 | Jan 13 |
| 24°F | Dec 11 | Jan 1 | Jan 19 |
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 | 257 days | 282 days | 309 days |
| 32°F | 283 days | 315 days | 343 days |
| 28°F | 320 days | 349 days | 365 days |
| 24°F | 349 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 99% |
| 28°F | 73% |
| 24°F | 22% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 85346 | 9a | 20 to 25°F | 9 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 USC00026865, at 33.6650, -114.2272, elevation 267 m (875 ft).
- Data quality: Standard (24+ years of data), 29 years of freeze data.
- Average days per year at or below 32°F: 12.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Ehrenberg 2 E (23 km)
- Bouse (36 km)
- Kofa Mine (50 km)
- Parker (55 km)
- Alamo Dam (87 km)
- Yuma 27 ENE (92 km)
- Yuma Proving Ground (94 km)
- Lake Havasu City (94 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.