Sterling, AK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sterling, a community in Kenai Peninsula Borough County, Alaska.
Tonight
39°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy, with a low around 39. South wind around 5 mph. Chance of precipitation is 50%.
7-day forecast for Sterling
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 39°F | Chance Rain Showers | 5 mph S | 47% |
| Saturday | 54°F | Chance Rain Showers | 5 to 10 mph NE | 47% |
| Saturday Night | 41°F | Chance Rain Showers then Light Rain Likely | 5 to 10 mph NE | 61% |
| Sunday | 54°F | Light Rain Likely then Chance Rain Showers | 5 to 10 mph NE | 61% |
| Sunday Night | 35°F | Rain Showers Likely | 0 to 5 mph SW | 73% |
| Monday | 53°F | Rain Showers Likely | 0 to 5 mph SE | 73% |
| Monday Night | 34°F | Chance Rain Showers | 0 to 5 mph E | 47% |
| Tuesday | 54°F | Partly Sunny | 0 to 5 mph NE | 13% |
| Tuesday Night | 34°F | Partly Cloudy | 0 to 5 mph NE | 7% |
| Wednesday | 56°F | Mostly Sunny | 0 mph | 6% |
| Wednesday Night | 34°F | Mostly Cloudy | 0 mph | 14% |
| Thursday | 56°F | Slight Chance Rain Showers | 0 to 5 mph SE | 20% |
| Thursday Night | 36°F | Chance Rain Showers | 0 to 5 mph E | 37% |
| Friday | 57°F | Chance Rain Showers | 0 to 5 mph E | 37% |
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 Sep 19, 2026.