Frost dates for Keams Canyon, AZ
At Keams Canyon, the median last spring frost (32°F) is May 16 and the median first fall frost is Oct 10, for a typical growing season of 147 days. For a 90% chance that the last frost has passed, wait until Jun 5. Nearby ZIP codes are in USDA hardiness zones 6b to 7a.
- May 16Last spring frost (median)50% chance of 32°F after this date
- Jun 5Safer planting date10% chance of 32°F after this date
- Oct 10First fall frost (median)50% chance of 32°F by this date
- 147 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 | May 14 | Jun 1 | Jun 15 |
| 32°F | Apr 29 | May 16 | Jun 5 |
| 28°F | Apr 14 | May 1 | May 20 |
| 24°F | Mar 28 | Apr 17 | May 8 |
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 | Sep 22 | Oct 2 | Oct 15 |
| 32°F | Sep 29 | Oct 10 | Oct 24 |
| 28°F | Oct 6 | Oct 20 | Nov 5 |
| 24°F | Oct 15 | Nov 1 | Nov 14 |
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 | 105 days | 124 days | 146 days |
| 32°F | 123 days | 147 days | 169 days |
| 28°F | 146 days | 169 days | 191 days |
| 24°F | 170 days | 194 days | 220 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 |
|---|---|---|---|
| 86034 | 6b | -5 to 0°F | 7 km |
| 86042 | 7a | 0 to 5°F | 18 km |
| 86043 | 7a | 0 to 5°F | 31 km |
| 86520 | 7a | 0 to 5°F | 33 km |
| 86039 | 7a | 0 to 5°F | 38 km |
| 86510 | 6b | -5 to 0°F | 47 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 USC00024586, at 35.8108, -110.1933, elevation 1891 m (6,205 ft).
- Data quality: Representative (10+ years), 14 years of freeze data.
- Average days per year at or below 32°F: 172.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Ganado (59 km)
- Canyon De Chelly (70 km)
- Painted Desert National Park (91 km)
- Winslow Muni Airport (99 km)
- Holbrook (100 km)
- Tuba City (101 km)
- Betatakin (101 km)
- Sanders (102 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.