Frost dates for Farewell Lake, AK
At Farewell Lake, the median last spring frost (32°F) is May 30 and the median first fall frost is Sep 5, for a typical growing season of 97 days. For a 90% chance that the last frost has passed, wait until Jun 15. Nearby ZIP codes are in USDA hardiness zones 2b to 3a.
- May 30Last spring frost (median)50% chance of 32°F after this date
- Jun 15Safer planting date10% chance of 32°F after this date
- Sep 5First fall frost (median)50% chance of 32°F by this date
- 97 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 |
|---|---|---|---|
| 32°F | May 12 | May 30 | Jun 15 |
| 28°F | Apr 30 | May 15 | May 31 |
| 24°F | Apr 18 | May 4 | May 23 |
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 |
|---|---|---|---|
| 32°F | Aug 22 | Sep 5 | Sep 24 |
| 28°F | Aug 31 | Sep 18 | Oct 3 |
| 24°F | Sep 7 | Sep 27 | Oct 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 | 43 days | 70 days | 94 days |
| 32°F | 73 days | 97 days | 122 days |
| 28°F | 97 days | 123 days | 146 days |
| 24°F | 119 days | 144 days | 166 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 |
|---|---|---|---|
| 99691 | 2b | -45 to -40°F | 21 km |
| 99557 | 3a | -40 to -35°F | 145 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 USC00503009, at 62.5422, -153.6206, elevation 323 m (1,060 ft).
- Data quality: Representative (10+ years), 12 years of freeze data.
- Average days per year at or below 32°F: 226.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Puntilla (68 km)
- Hayes River (101 km)
- McGrath Airport (111 km)
- Skwentna (139 km)
- Amber Lake (165 km)
- Minchumina (166 km)
- Denali 27 N (172 km)
- Talkeetna Airport (183 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.