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.
Overnight
50°F
Mostly Cloudy
Mostly cloudy, with a low around 50. South wind around 5 mph.
7-day forecast for Gustavus
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Mostly Cloudy | 5 mph S | 3% |
| Tuesday | 63°F | Partly Sunny | 5 to 10 mph SW | 3% |
| Tuesday Night | 49°F | Mostly Cloudy then Patchy Fog | 0 to 5 mph SW | 2% |
| Wednesday | 64°F | Patchy Fog then Partly Sunny | 0 to 5 mph SW | 2% |
| Wednesday Night | 49°F | Mostly Cloudy | 0 to 5 mph SW | 0% |
| Thursday | 65°F | Partly Sunny | 0 to 5 mph SW | 3% |
| Thursday Night | 50°F | Mostly Cloudy | 0 to 5 mph W | 6% |
| Friday | 64°F | Mostly Cloudy | 0 to 5 mph W | 8% |
| Friday Night | 51°F | Mostly Cloudy then Slight Chance Rain Showers | 0 to 5 mph W | 17% |
| Saturday | 60°F | Slight Chance Rain Showers then Mostly Cloudy | 0 to 5 mph W | 17% |
| Saturday Night | 50°F | Mostly Cloudy | 0 to 5 mph NW | 5% |
| Sunday | 65°F | Partly Sunny | 0 to 5 mph W | 0% |
| Sunday Night | 50°F | Mostly Cloudy | 0 to 5 mph NW | 0% |
| Monday | 67°F | Partly Sunny | 0 to 5 mph W | 0% |
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 Aug 4, 2026.