Koyukuk, AK Weather & Growing Conditions
Overnight
50°F
Rain Showers
Rain showers. Cloudy, with a low around 50. East wind around 5 mph. Chance of precipitation is 80%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Rain Showers | 5 mph E | 84% |
| Tuesday | 63°F | Chance Showers And Thunderstorms | 5 to 15 mph SE | 84% |
| Tuesday Night | 50°F | Chance Showers And Thunderstorms | 10 to 15 mph S | 66% |
| Wednesday | 62°F | Chance Rain Showers | 10 mph S | 63% |
| Wednesday Night | 51°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 57% |
| Thursday | 61°F | Rain Showers | 5 to 10 mph S | 80% |
| Thursday Night | 49°F | Rain Showers | 5 to 10 mph S | 80% |
| Friday | 65°F | Scattered Rain Showers | 5 mph SW | 51% |
| Friday Night | 50°F | Scattered Rain Showers | 5 mph SW | 40% |
| Saturday | 67°F | Scattered Rain Showers | 5 mph SW | 36% |
| Saturday Night | 51°F | Scattered Rain Showers | 5 mph SW | 36% |
| Sunday | 68°F | Isolated Rain Showers | 5 mph W | 24% |
| Sunday Night | 52°F | Isolated Rain Showers | 5 mph NW | 24% |
| Monday | 70°F | Scattered Rain Showers | 5 mph S | 26% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Koyukuk, AK
Last spring frost
May 18
First fall frost
Sep 8
Growing season
111 days
Explore more for Koyukuk, AK: full frost dates · planting calendar · Alaska frost dates
Climate data from the nearest NOAA station, Galena, Ak (26.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.