Friday Harbor, WA Weather & Growing Conditions
Today
81°F
Sunny
Sunny, with a high near 81. North northwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Sunny | 6 mph NNW | 0% |
| Tonight | 58°F | Patchy Smoke | 0 to 3 mph NNW | 0% |
| Wednesday | 84°F | Sunny | 5 mph NNW | 0% |
| Wednesday Night | 58°F | Mostly Clear | 2 mph NNW | 0% |
| Thursday | 83°F | Sunny | 2 mph W | 0% |
| Thursday Night | 58°F | Mostly Clear | 1 mph SW | 0% |
| Friday | 81°F | Sunny | 0 to 5 mph SSW | 0% |
| Friday Night | 57°F | Mostly Clear | 0 to 5 mph WSW | 0% |
| Saturday | 75°F | Sunny | 0 to 5 mph SW | 0% |
| Saturday Night | 56°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Sunday | 73°F | Sunny | 0 to 3 mph SW | 0% |
| Sunday Night | 55°F | Mostly Clear | 0 to 3 mph WNW | 1% |
| Monday | 73°F | Mostly Sunny | 3 mph WSW | 1% |
| Monday Night | 55°F | Partly Cloudy | 0 to 3 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Friday Harbor, WA
Last spring frost
Feb 26
First fall frost
Nov 29
Growing season
276 days
Hardiness zone
9a
Explore more for Friday Harbor, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Olga 2 Se, Wa (3.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.