Frost dates for Kodiak Airport, AK
At Kodiak Airport, the median last spring frost (32°F) is May 5 and the median first fall frost is Oct 3, for a typical growing season of 151 days. For a 90% chance that the last frost has passed, wait until May 21. Nearby ZIP codes are in USDA hardiness zones 7a to 7b.
- May 5Last spring frost (median)50% chance of 32°F after this date
- May 21Safer planting date10% chance of 32°F after this date
- Oct 3First fall frost (median)50% chance of 32°F by this date
- 151 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 10 | May 26 | Jun 9 |
| 32°F | Apr 19 | May 5 | May 21 |
| 28°F | Apr 4 | Apr 18 | May 3 |
| 24°F | Mar 19 | Apr 4 | Apr 20 |
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 8 | Sep 21 | Oct 2 |
| 32°F | Sep 22 | Oct 3 | Oct 17 |
| 28°F | Oct 1 | Oct 17 | Nov 5 |
| 24°F | Oct 16 | Nov 3 | Nov 23 |
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 | 98 days | 118 days | 137 days |
| 32°F | 131 days | 151 days | 171 days |
| 28°F | 162 days | 185 days | 206 days |
| 24°F | 189 days | 212 days | 235 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 |
|---|---|---|---|
| 99615 | 7a | 0 to 5°F | 54 km |
| 99643 | 7b | 5 to 10°F | 78 km |
| 99624 | 7b | 5 to 10°F | 86 km |
| 99608 | 7a | 0 to 5°F | 113 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 USW00025501, at 57.7511, -152.4856, elevation 24 m (80 ft).
- Data quality: Standard (24+ years of data), 30 years of freeze data.
- Average days per year at or below 32°F: 133.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Kodiak Wastewater Plant (10 km)
- Monashka Creek Dam (10 km)
- Ouzinkie (19 km)
- Kitoi Bay (49 km)
- Seldovia Airport (194 km)
- King Salmon 42 SE (209 km)
- Homer Airport (218 km)
- Homer 8 NW (227 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.