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.
Overnight
37°F
Light Rain
Rain. Cloudy, with a low around 37. West wind 0 to 5 mph. Chance of precipitation is 90%.
7-day forecast for Glennallen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 37°F | Light Rain | 0 to 5 mph W | 94% |
| Saturday | 50°F | Light Rain Likely then Slight Chance Rain Showers | 5 to 10 mph S | 57% |
| Saturday Night | 35°F | Slight Chance Rain Showers then Light Rain Likely | 5 to 10 mph E | 59% |
| Sunday | 49°F | Light Rain Likely then Chance Rain Showers | 0 to 5 mph NE | 61% |
| Sunday Night | 35°F | Rain Showers Likely | 5 mph E | 71% |
| Monday | 50°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph SE | 43% |
| Monday Night | 27°F | Mostly Cloudy | 5 to 10 mph S | 7% |
| Tuesday | 49°F | Mostly Cloudy | 5 mph E | 2% |
| Tuesday Night | 28°F | Mostly Cloudy | 0 to 5 mph NW | 1% |
| Wednesday | 48°F | Partly Sunny | 0 mph | 1% |
| Wednesday Night | 26°F | Partly Cloudy | 0 mph | 1% |
| Thursday | 49°F | Mostly Sunny | 0 to 15 mph SE | 3% |
| Thursday Night | 31°F | Mostly Cloudy then Slight Chance Rain Showers | 15 mph SE | 18% |
| Friday | 49°F | Slight Chance Rain Showers | 15 mph SE | 22% |
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 Sep 19, 2026.