Harman US

Port Graham, AK Weather & Growing Conditions

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

Overnight
53°F
Heavy Rain
Rain. Cloudy, with a low around 53. Southeast wind around 25 mph. Chance of precipitation is 100%.

7-day forecast for Port Graham

WhenTempForecastWindPrecip
Overnight 53°F Heavy Rain 25 mph SE 99%
Tuesday 56°F Heavy Rain 15 to 25 mph SE 99%
Tuesday Night 52°F Light Rain 15 mph SE 84%
Wednesday 57°F Light Rain 15 mph SE 75%
Wednesday Night 52°F Light Rain Likely 5 to 15 mph SE 62%
Thursday 58°F Light Rain Likely 5 to 10 mph SE 62%
Thursday Night 50°F Chance Light Rain 0 to 5 mph SE 42%
Friday 62°F Mostly Cloudy 5 mph S 12%
Friday Night 50°F Mostly Cloudy 5 mph SW 3%
Saturday 64°F Mostly Cloudy 5 mph SW 2%
Saturday Night 51°F Mostly Cloudy 0 to 5 mph SW 3%
Sunday 64°F Mostly Cloudy 0 to 5 mph SW 9%
Sunday Night 51°F Mostly Cloudy 0 to 5 mph SW 14%
Monday 63°F Chance Rain Showers 0 to 5 mph SW 25%

Forecast source: National Weather Service (api.weather.gov) for Port Graham (59.340, -151.846). Updated through the day.

Growing snapshot for Port Graham

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

More local growing data for Port Graham: nearby ZIP 99663 weather · frost dates · planting calendar · Alaska frost dates

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Climate data from the nearest NOAA station, Seldovia Ap, Ak (4 mi from Port Graham). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.