Mendeltna, AK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mendeltna, a community in Copper River Census Area County, Alaska.
Today
25°F
Chance Light Snow
A chance of snow. Mostly cloudy, with a high near 25. Northeast wind around 5 mph. Chance of precipitation is 40%.
7-day forecast for Mendeltna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 25°F | Chance Light Snow | 5 mph NE | 36% |
| Tonight | 18°F | Chance Light Snow | 0 mph | 45% |
| Wednesday | 27°F | Chance Light Snow | 0 to 5 mph N | 32% |
| Wednesday Night | 19°F | Mostly Cloudy then Slight Chance Snow Showers | 0 to 5 mph NE | 15% |
| Thursday | 25°F | Mostly Cloudy | 0 to 5 mph NE | 13% |
| Thursday Night | 19°F | Mostly Cloudy | 5 mph NW | 7% |
| Friday | 23°F | Mostly Cloudy | 0 to 5 mph N | 6% |
| Friday Night | 15°F | Mostly Cloudy | 0 to 5 mph NW | 8% |
| Saturday | 21°F | Mostly Cloudy | 0 to 5 mph NW | 8% |
| Saturday Night | 13°F | Mostly Cloudy | 0 to 5 mph NW | 6% |
| Sunday | 18°F | Mostly Cloudy | 0 mph | 8% |
| Sunday Night | 13°F | Mostly Cloudy | 0 mph | 4% |
| Monday | 18°F | Mostly Cloudy | 0 to 5 mph N | 12% |
| Monday Night | 12°F | Mostly Cloudy | 0 to 5 mph NW | 4% |
Forecast source: National Weather Service (api.weather.gov) for Mendeltna (62.146, -146.758). Updated through the day.
Growing snapshot for Mendeltna
Last spring frost
May 30
First fall frost
Sep 4
Growing season
95 days
More local growing data for Mendeltna: nearby ZIP 99588 weather · frost dates · planting calendar · Alaska frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Lake Susitna, Ak (17.7 mi from Mendeltna). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.