Port Townsend, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Port Townsend, a city in Jefferson County, Washington.
This Afternoon
67°F
Mostly Sunny
Mostly sunny. High near 67, with temperatures falling to around 64 in the afternoon. Northwest wind around 6 mph.
7-day forecast for Port Townsend
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Mostly Sunny | 6 mph NW | 0% |
| Tonight | 51°F | Partly Cloudy | 6 mph WNW | 0% |
| Sunday | 67°F | Mostly Sunny | 5 to 9 mph W | 0% |
| Sunday Night | 51°F | Mostly Cloudy | 9 mph W | 0% |
| Monday | 68°F | Partly Sunny | 5 to 9 mph W | 1% |
| Monday Night | 52°F | Partly Cloudy | 7 to 10 mph W | 2% |
| Tuesday | 67°F | Partly Sunny | 7 mph W | 7% |
| Tuesday Night | 52°F | Mostly Cloudy | 3 to 8 mph WSW | 8% |
| Wednesday | 63°F | Partly Sunny | 3 to 7 mph S | 14% |
| Wednesday Night | 51°F | Mostly Cloudy | 8 mph W | 11% |
| Thursday | 61°F | Mostly Cloudy then Slight Chance Light Rain | 6 to 9 mph WNW | 15% |
| Thursday Night | 50°F | Slight Chance Light Rain | 8 mph WNW | 24% |
| Friday | 62°F | Slight Chance Light Rain | 6 to 9 mph WNW | 24% |
| Friday Night | 50°F | Mostly Cloudy | 5 to 8 mph WNW | 12% |
Forecast source: National Weather Service (api.weather.gov) for Port Townsend (48.122, -122.788). Updated through the day.
Growing snapshot for Port Townsend
Last spring frost
Mar 1
First fall frost
Nov 28
Growing season
274 days
Hardiness zone
8b
More local growing data for Port Townsend: nearby ZIP 98368 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Port Townsend, Wa (6.1 mi from Port Townsend). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.