Alaska · NOAA station USC00502339
Frost dates for Delta 6 N, AK
Delta 6 N can freeze in any month: NOAA flags it as having a year-round risk of 32°F, too cold to compute spring and fall frost dates. The median stretch between 32°F freezes is 63 days. Nearby ZIP codes are in USDA hardiness zones 2a to 3b.
- 100%Chance of 32°F in a year
- 63 daysMedian freeze-free stretch
- 256Days at or below 32°Faverage per year
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 |
|---|---|---|---|
| 99714 | 3b | -35 to -30°F | 48 km |
| 99706 | 3b | -35 to -30°F | 53 km |
| 99737 | 3a | -40 to -35°F | 78 km |
| 99702 | 2a | -50 to -45°F | 86 km |
| 99705 | 2a | -50 to -45°F | 103 km |
| 99712 | 3b | -35 to -30°F | 105 km |
| 99707 | 3b | -35 to -30°F | 118 km |
| 99703 | 2a | -50 to -45°F | 120 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 USC00502339, at 64.1172, -145.7511, elevation 323 m (1,059 ft).
- Data quality: Representative (10+ years), 21 years of freeze data.
- Average days per year at or below 32°F: 256.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Delta 5 NE (8 km)
- Whitestone Farms (8 km)
- Big Delta Airport (14 km)
- Delta Junction 20 SE (36 km)
- Dry Creek (75 km)
- Eielson Field (89 km)
- Two Rivers (101 km)
- N Pole (104 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.