Birch Bay, WA Weather & Growing Conditions
Today
82°F
Sunny
Sunny, with a high near 82. West northwest wind 1 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 1 to 5 mph WNW | 0% |
| Tonight | 57°F | Patchy Smoke then Mostly Clear | 0 to 3 mph W | 0% |
| Wednesday | 84°F | Sunny | 0 to 5 mph WNW | 0% |
| Wednesday Night | 58°F | Mostly Clear | 0 to 5 mph WSW | 0% |
| Thursday | 82°F | Sunny | 0 to 5 mph SW | 0% |
| Thursday Night | 59°F | Mostly Clear | 3 mph SSW | 0% |
| Friday | 79°F | Sunny | 1 to 6 mph SSW | 0% |
| Friday Night | 58°F | Mostly Clear | 1 to 5 mph SSE | 0% |
| Saturday | 77°F | Sunny | 1 to 6 mph SSW | 0% |
| Saturday Night | 57°F | Mostly Clear | 1 to 5 mph S | 0% |
| Sunday | 74°F | Mostly Sunny | 1 to 6 mph SSW | 0% |
| Sunday Night | 55°F | Mostly Clear | 1 to 5 mph S | 2% |
| Monday | 74°F | Mostly Sunny | 1 to 6 mph SW | 2% |
| Monday Night | 55°F | Partly Cloudy | 1 to 5 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Birch Bay, WA
Last spring frost
Mar 31
First fall frost
Nov 4
Growing season
219 days
Hardiness zone
8b
Explore more for Birch Bay, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Blaine, Wa (4.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.