Harman US

Sterling, AK Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Sterling, a community in Kenai Peninsula Borough County, Alaska.

Today
42°F
Cloudy then Slight Chance Light Rain
A slight chance of rain after 3pm. Cloudy, with a high near 42. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

7-day forecast for Sterling

WhenTempForecastWindPrecip
Today 42°F Cloudy then Slight Chance Light Rain 15 mph NE 17%
Tonight 34°F Slight Chance Light Rain 10 to 15 mph NE 36%
Wednesday 45°F Chance Rain Showers 5 mph NE 40%
Wednesday Night 30°F Chance Rain Showers then Slight Chance Rain And Snow Showers 5 mph NE 26%
Thursday 39°F Slight Chance Rain And Snow Showers then Slight Chance Rain And Snow 5 mph NE 19%
Thursday Night 26°F Mostly Cloudy 0 to 5 mph NE 11%
Friday 38°F Mostly Cloudy 0 to 5 mph NE 11%
Friday Night 26°F Mostly Cloudy 0 to 5 mph NE 14%
Saturday 37°F Mostly Cloudy 0 to 5 mph NE 14%
Saturday Night 25°F Mostly Cloudy 0 to 5 mph NE 7%
Sunday 35°F Mostly Cloudy 0 mph 12%
Sunday Night 23°F Mostly Cloudy then Slight Chance Light Rain 0 mph 9%
Monday 34°F Slight Chance Light Rain 0 to 5 mph NE 15%
Monday Night 23°F Mostly Cloudy then Slight Chance Light Snow 0 to 5 mph NE 15%

Forecast source: National Weather Service (api.weather.gov) for Sterling (60.540, -150.805). Updated through the day.

Growing snapshot for Sterling

Last spring frost
May 20
First fall frost
Sep 21
Growing season
123 days

More local growing data for Sterling: nearby ZIP 99672 weather · frost dates · planting calendar · Alaska frost dates

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Climate data from the nearest NOAA station, Sterling 6Sw, Ak (7.6 mi from Sterling). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.