Kupreanof, AK Weather & Growing Conditions
Today
60°F
Rain Showers
Rain showers and patchy fog. Cloudy, with a high near 60. Southeast wind around 15 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 60°F | Rain Showers | 15 mph SE | 100% |
| Tonight | 50°F | Rain Showers | 15 to 20 mph SE | 100% |
| Sunday | 59°F | Showers And Thunderstorms | 15 mph SE | 100% |
| Sunday Night | 43°F | Showers And Thunderstorms | 10 to 15 mph SE | 100% |
| Monday | 58°F | Rain Showers | 10 mph SE | 100% |
| Monday Night | 40°F | Rain Showers | 10 to 15 mph SE | 100% |
| Tuesday | 57°F | Rain Showers | 15 mph SE | 100% |
| Tuesday Night | 40°F | Rain Showers | 15 mph SE | 100% |
| Wednesday | 57°F | Rain Showers | 10 to 15 mph SE | 92% |
| Wednesday Night | 40°F | Rain Showers | 10 mph SE | 80% |
| Thursday | 58°F | Chance Rain Showers | 5 to 10 mph SE | 29% |
| Thursday Night | 39°F | Chance Rain Showers | 5 mph SE | 25% |
| Friday | 59°F | Chance Rain Showers | 5 mph SE | 34% |
| Friday Night | 41°F | Chance Rain Showers | 5 to 10 mph SE | 50% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Kupreanof, AK
Last spring frost
Apr 29
First fall frost
Oct 17
Growing season
169 days
Explore more for Kupreanof, AK: full frost dates · planting calendar · Alaska frost dates
Climate data from the nearest NOAA station, Petersburg 1, Ak (9.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.