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Iliamna, AK Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Iliamna, a community in Lake And Peninsula Borough County, Alaska.

Today
50°F
Chance Rain Showers
A chance of rain showers. Cloudy, with a high near 50. Northeast wind 5 to 10 mph. Chance of precipitation is 50%.

7-day forecast for Iliamna

WhenTempForecastWindPrecip
Today 50°F Chance Rain Showers 5 to 10 mph NE 46%
Tonight 45°F Chance Rain Showers 0 to 10 mph N 32%
Sunday 47°F Chance Rain Showers 0 to 5 mph NW 32%
Sunday Night 33°F Chance Rain Showers then Chance Rain And Snow Showers 5 to 10 mph NW 43%
Monday 44°F Chance Rain And Snow then Chance Rain Showers 10 to 15 mph NW 43%
Monday Night 34°F Mostly Cloudy then Slight Chance Rain Showers 5 to 15 mph NW 15%
Tuesday 49°F Slight Chance Rain Showers then Partly Sunny 5 to 10 mph NW 15%
Tuesday Night 33°F Partly Cloudy 5 to 10 mph NW 0%
Wednesday 49°F Mostly Sunny 5 mph N 1%
Wednesday Night 37°F Partly Cloudy then Chance Rain Showers 5 to 15 mph E 31%
Thursday 51°F Rain Showers 15 to 30 mph E 75%
Thursday Night 42°F Rain Showers 20 to 25 mph E 75%
Friday 52°F Rain Showers Likely 15 to 20 mph SE 66%
Friday Night 42°F Rain Showers Likely 10 to 15 mph SE 68%

Forecast source: National Weather Service (api.weather.gov) for Iliamna (59.778, -154.884). Updated through the day.

Growing snapshot for Iliamna

Last spring frost
May 10
First fall frost
Oct 1
Growing season
144 days

More local growing data for Iliamna: nearby ZIP 99606 weather · frost dates · planting calendar · Alaska frost dates

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Climate data from the nearest NOAA station, Iliamna Ap, Ak (0.9 mi from Iliamna). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.