Glennallen, AK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glennallen, a community in Copper River Census Area County, Alaska.
Tonight
19°F
Mostly Cloudy
Mostly cloudy, with a low around 19. North wind 0 to 5 mph.
7-day forecast for Glennallen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 19°F | Mostly Cloudy | 0 to 5 mph N | 11% |
| Wednesday | 27°F | Partly Sunny | 0 to 5 mph E | 10% |
| Wednesday Night | 16°F | Mostly Cloudy then Slight Chance Light Snow | 5 mph NE | 17% |
| Thursday | 24°F | Slight Chance Light Snow then Partly Sunny | 0 to 5 mph N | 21% |
| Thursday Night | 15°F | Mostly Cloudy | 0 to 5 mph NW | 5% |
| Friday | 21°F | Mostly Cloudy | 0 to 5 mph NW | 8% |
| Friday Night | 14°F | Mostly Cloudy | 5 mph NW | 8% |
| Saturday | 20°F | Mostly Cloudy | 0 to 5 mph NW | 3% |
| Saturday Night | 12°F | Mostly Cloudy | 0 mph | 3% |
| Sunday | 17°F | Mostly Cloudy | 0 mph | 7% |
| Sunday Night | 13°F | Mostly Cloudy | 0 to 5 mph N | 3% |
| Monday | 18°F | Mostly Cloudy | 0 to 5 mph NW | 8% |
| Monday Night | 11°F | Mostly Cloudy | 0 mph | 5% |
| Tuesday | 16°F | Mostly Cloudy | 0 mph | 4% |
Forecast source: National Weather Service (api.weather.gov) for Glennallen (62.153, -145.841). Updated through the day.
Growing snapshot for Glennallen
Growing season
72 days
More local growing data for Glennallen: nearby ZIP 99573 weather · frost dates · planting calendar · Alaska frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Tonsina, Ak (17.4 mi from Glennallen). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.