Tonsina, AK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Tonsina, a community in Copper River Census Area County, Alaska.
Today
38°F
Chance Light Snow then Chance Snow Showers
A chance of snow and patchy fog before 10am, then a chance of snow showers. Mostly cloudy, with a high near 38. South wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 50%.
7-day forecast for Tonsina
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 38°F | Chance Light Snow then Chance Snow Showers | 15 to 25 mph S | 48% |
| Tonight | 29°F | Chance Snow Showers then Light Snow | 10 to 15 mph SE | 89% |
| Sunday | 38°F | Light Snow then Snow Showers | 5 to 10 mph E | 100% |
| Sunday Night | 30°F | Snow Showers | 10 to 15 mph SE | 100% |
| Monday | 36°F | Snow Showers | 10 to 15 mph S | 83% |
| Monday Night | 24°F | Mostly Cloudy | 10 to 15 mph S | 23% |
| Tuesday | 36°F | Mostly Cloudy | 5 to 10 mph W | 7% |
| Tuesday Night | 26°F | Mostly Cloudy | 0 to 5 mph NW | 7% |
| Wednesday | 36°F | Partly Sunny | 0 to 5 mph W | 7% |
| Wednesday Night | 24°F | Partly Cloudy | 0 to 10 mph S | 8% |
| Thursday | 37°F | Mostly Sunny then Slight Chance Snow Showers | 10 to 15 mph S | 20% |
| Thursday Night | 28°F | Snow Showers Likely | 15 to 20 mph SE | 59% |
| Friday | 36°F | Snow Showers Likely | 15 to 20 mph S | 59% |
| Friday Night | 28°F | Snow Showers Likely | 15 mph S | 56% |
Forecast source: National Weather Service (api.weather.gov) for Tonsina (61.530, -145.110). Updated through the day.
Growing snapshot for Tonsina
Growing season
72 days
More local growing data for Tonsina: 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 Tonsina). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.