Port Alsworth, AK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Port Alsworth, a community in Lake And Peninsula Borough County, Alaska.
Today
60°F
Light Rain
Rain before 4pm, then a chance of rain showers. Cloudy, with a high near 60. Southeast wind 0 to 5 mph. Chance of precipitation is 80%.
7-day forecast for Port Alsworth
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 60°F | Light Rain | 0 to 5 mph SE | 77% |
| Tonight | 46°F | Chance Rain Showers then Chance Light Rain | 0 to 5 mph SE | 50% |
| Wednesday | 66°F | Chance Light Rain then Chance Rain Showers | 0 to 5 mph SE | 42% |
| Wednesday Night | 46°F | Chance Light Rain | 5 mph SE | 41% |
| Thursday | 65°F | Chance Light Rain | 5 mph SE | 30% |
| Thursday Night | 46°F | Chance Light Rain then Slight Chance Rain Showers | 0 to 5 mph SE | 42% |
| Friday | 67°F | Slight Chance Rain Showers | 0 to 5 mph SW | 17% |
| Friday Night | 49°F | Mostly Cloudy | 0 to 5 mph SW | 6% |
| Saturday | 72°F | Mostly Cloudy | 0 mph | 7% |
| Saturday Night | 49°F | Mostly Cloudy | 0 mph | 9% |
| Sunday | 73°F | Mostly Cloudy then Slight Chance Rain Showers | 0 to 5 mph W | 17% |
| Sunday Night | 49°F | Slight Chance Rain Showers | 0 to 5 mph SW | 17% |
| Monday | 73°F | Slight Chance Rain Showers | 0 to 5 mph W | 22% |
| Monday Night | 49°F | Slight Chance Rain Showers then Mostly Cloudy | 0 to 5 mph SW | 22% |
Forecast source: National Weather Service (api.weather.gov) for Port Alsworth (60.157, -154.340). Updated through the day.
Growing snapshot for Port Alsworth
Last spring frost
Jun 2
First fall frost
Sep 12
Growing season
101 days
More local growing data for Port Alsworth: nearby ZIP 99653 weather · frost dates · planting calendar · Alaska frost dates
Nearby towns & communities
Chignik
Chignik Lagoon
Chignik Lake
Egegik
Igiugig
Iliamna
Ivanof Bay
Kokhanok
Levelock
Newhalen
Nondalton
Pedro Bay
Perryville
Pilot Point
Pope-Vannoy Landing
Port Heiden
Ugashik
Climate data from the nearest NOAA station, Port Alsworth 1 Sw, Ak (2.7 mi from Port Alsworth). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.