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Willow, AK Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Willow, a community in Matanuska-Susitna Borough County, Alaska.

Overnight
37°F
Rain Showers
Rain showers. Cloudy, with a low around 37. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

7-day forecast for Willow

WhenTempForecastWindPrecip
Overnight 37°F Rain Showers 5 to 10 mph SW 82%
Saturday 45°F Light Rain then Rain Showers 5 to 10 mph S 82%
Saturday Night 36°F Rain Showers then Chance Light Rain 0 to 5 mph N 76%
Sunday 45°F Chance Light Rain then Chance Rain Showers 0 to 5 mph NE 37%
Sunday Night 33°F Rain Showers 0 to 5 mph W 79%
Monday 41°F Snow Showers 0 to 5 mph S 79%
Monday Night 31°F Chance Rain Showers then Mostly Cloudy 5 mph SE 33%
Tuesday 42°F Partly Sunny 5 mph N 8%
Tuesday Night 30°F Partly Cloudy 5 mph NE 9%
Wednesday 42°F Mostly Sunny 5 mph SW 11%
Wednesday Night 30°F Mostly Cloudy 5 to 10 mph S 11%
Thursday 43°F Mostly Cloudy 5 to 10 mph SE 14%
Thursday Night 32°F Chance Rain And Snow Showers 5 to 10 mph SE 31%
Friday 44°F Chance Rain And Snow Showers 5 to 10 mph SE 31%

Forecast source: National Weather Service (api.weather.gov) for Willow (61.887, -149.620). Updated through the day.

Growing snapshot for Willow

Last spring frost
May 15
First fall frost
Sep 18
Growing season
126 days

More local growing data for Willow: nearby ZIP 99688 weather · frost dates · planting calendar · Alaska frost dates

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Climate data from the nearest NOAA station, Willow West, Ak (17.1 mi from Willow). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.