First and last freeze dates in Sitka, AK
The first freeze of fall (a low of 32°F or colder) typically comes around Oct 30, and the last freeze of spring around Apr 13.
This fall so far (data through Oct 16, 2026): no 32°F freeze recorded yet at this station. Observed data, can lag a day or two.
Oct 30Median first fall freeze (≤32°F)
Apr 13Median last spring freeze (≤32°F)
199Median freeze-free days between
First and last freeze dates in Sitka
| Threshold | Event | Median date | Typical range (10th–90th pct) | Earliest / latest | Years with one |
|---|---|---|---|---|---|
| 32°F or colder (freeze) | First in fall | Oct 30 | Oct 16 – Nov 13 | Oct 8 (2019) / Nov 17 (2016) | 100% |
| 32°F or colder (freeze) | Last in spring | Apr 13 | Apr 3 – Apr 29 | – | 100% |
| 28°F or colder (hard freeze) | First in fall | Nov 23 | Nov 5 – Dec 14 | Oct 27 (2012) / Dec 31 (1997) | 90% |
| 28°F or colder (hard freeze) | Last in spring | Mar 21 | Mar 6 – Apr 8 | – | 100% |
Based on the station’s daily minimum temperature, 1995–2024. “Freeze” here means a daily low at or below the threshold, which is not the same as visible frost. Your yard can differ by several degrees and days from an airport weather station, so use these as planning odds, not guarantees.
The median stretch between the last spring freeze and the first fall freeze (the freeze-free season) was about 199 days.
Nearby weather stations
Source station: Sitka Ap (USW00025333), elevation 20 ft. Data: NOAA NCEI GHCN-Daily. Computed by First Snow Dates; how we calculate this. Historical averages only; for a forecast see weather.gov.
Planning for winter? Heat pump vs gas furnace, propane and oil: heating cost in Alaska (on our sister site PlugVsPump, from EIA prices).