Gustavus, AK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gustavus, a city in Hoonah-Angoon Census Area County, Alaska.
Tonight
46°F
Rain Showers
Rain showers. Cloudy, with a low around 46. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Gustavus
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Rain Showers | 5 to 10 mph SE | 94% |
| Saturday | 58°F | Rain Showers | 5 to 15 mph SE | 91% |
| Saturday Night | 47°F | Rain Showers | 10 to 15 mph SE | 100% |
| Sunday | 55°F | Rain Showers | 10 to 15 mph SE | 100% |
| Sunday Night | 39°F | Rain Showers | 5 to 15 mph SE | 100% |
| Monday | 55°F | Rain Showers | 5 to 10 mph SE | 100% |
| Monday Night | 38°F | Rain Showers | 0 to 5 mph SE | 100% |
| Tuesday | 55°F | Rain Showers Likely | 5 to 10 mph E | 73% |
| Tuesday Night | 38°F | Rain Showers Likely | 5 to 10 mph E | 73% |
| Wednesday | 55°F | Rain Showers Likely | 5 mph E | 68% |
| Wednesday Night | 37°F | Chance Rain Showers | 0 to 5 mph E | 50% |
| Thursday | 57°F | Chance Rain Showers | 0 to 5 mph N | 29% |
| Thursday Night | 38°F | Chance Rain Showers | 0 to 5 mph N | 28% |
| Friday | 56°F | Chance Rain Showers | 0 to 5 mph NE | 45% |
Forecast source: National Weather Service (api.weather.gov) for Gustavus (58.435, -135.728). Updated through the day.
Growing snapshot for Gustavus
Last spring frost
May 30
First fall frost
Sep 16
Growing season
107 days
More local growing data for Gustavus: nearby ZIP 99826 weather · frost dates · planting calendar · Alaska frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Gustavus, Ak (3.6 mi from Gustavus). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.