Frost dates for Auke Bay, AK
At Auke Bay, the median last spring frost (32°F) is Apr 27 and the median first fall frost is Oct 18, for a typical growing season of 172 days. For a 90% chance that the last frost has passed, wait until May 11. Nearby ZIP codes are in USDA hardiness zones 6a to 7a.
- Apr 27Last spring frost (median)50% chance of 32°F after this date
- May 11Safer planting date10% chance of 32°F after this date
- Oct 18First fall frost (median)50% chance of 32°F by this date
- 172 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 28 | May 10 | May 27 |
| 32°F | Apr 12 | Apr 27 | May 11 |
| 28°F | Mar 25 | Apr 9 | Apr 25 |
| 24°F | Mar 8 | Mar 27 | Apr 10 |
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 20 | Oct 3 | Oct 17 |
| 32°F | Sep 30 | Oct 18 | Nov 3 |
| 28°F | Oct 14 | Nov 4 | Nov 22 |
| 24°F | Nov 1 | Nov 19 | Dec 10 |
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 | 125 days | 146 days | 164 days |
| 32°F | 149 days | 172 days | 195 days |
| 28°F | 184 days | 208 days | 231 days |
| 24°F | 213 days | 237 days | 264 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
Closest ZIP codes (each is closer to another station)
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 99824 | 7a | 0 to 5°F | 19 km |
| 99801 | 6a | -10 to -5°F | 27 km |
| 99850 | 7a | 0 to 5°F | 50 km |
| 99829 | 7a | 0 to 5°F | 56 km |
| 99826 | 7a | 0 to 5°F | 68 km |
| 99841 | 7a | 0 to 5°F | 70 km |
| 99832 | 7a | 0 to 5°F | 96 km |
| 99825 | 7a | 0 to 5°F | 102 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 USC00500464, at 58.3814, -134.6450, elevation 13 m (44 ft).
- Data quality: Standard (24+ years of data), 28 years of freeze data.
- Average days per year at or below 32°F: 122.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Juneau Forecast Office (5 km)
- Juneau Intl Airport (5 km)
- Juneau Mile 17 (7 km)
- Juneau Lena Point (7 km)
- Eaglecrest Base (14 km)
- Juneau Dwtn (16 km)
- Annex Creek (33 km)
- Hoonah (55 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.