Unalaska, AK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Unalaska, a city in Aleutians West Census Area County, Alaska.
Overnight
46°F
Slight Chance Light Rain
A slight chance of rain before 4am. Mostly clear, with a low around 46. West wind 10 to 15 mph. Chance of precipitation is 20%.
7-day forecast for Unalaska
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Slight Chance Light Rain | 10 to 15 mph W | 16% |
| Tuesday | 55°F | Sunny | 10 mph W | 13% |
| Tuesday Night | 46°F | Mostly Cloudy | 5 to 10 mph W | 0% |
| Wednesday | 55°F | Mostly Cloudy | 0 to 5 mph W | 6% |
| Wednesday Night | 46°F | Mostly Cloudy | 0 mph | 9% |
| Thursday | 54°F | Partly Sunny | 0 mph | 5% |
| Thursday Night | 46°F | Mostly Cloudy | 0 to 5 mph NE | 13% |
| Friday | 56°F | Mostly Cloudy | 0 to 5 mph SE | 14% |
| Friday Night | 49°F | Mostly Cloudy | 0 to 5 mph SE | 14% |
| Saturday | 57°F | Slight Chance Rain Showers | 0 to 5 mph E | 18% |
| Saturday Night | 49°F | Slight Chance Rain Showers | 0 to 5 mph NE | 19% |
| Sunday | 56°F | Chance Rain Showers | 0 to 5 mph S | 43% |
| Sunday Night | 48°F | Chance Rain Showers | 5 mph SE | 45% |
| Monday | 55°F | Chance Rain Showers | 5 to 10 mph SE | 45% |
Forecast source: National Weather Service (api.weather.gov) for Unalaska (53.910, -166.529). Updated through the day.
Growing snapshot for Unalaska
Last spring frost
May 6
First fall frost
Oct 18
Growing season
164 days
More local growing data for Unalaska: nearby ZIP 99692 weather · frost dates · planting calendar · Alaska frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Dutch Harbor, Ak (0.8 mi from Unalaska). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.