Black Diamond, WA Weather & Growing Conditions
Today
87°F
Smoke
Smoke. Sunny, with a high near 87. West northwest wind 1 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Smoke | 1 to 5 mph WNW | 0% |
| Tonight | 57°F | Smoke | 3 mph NE | 0% |
| Wednesday | 92°F | Areas Of Smoke | 2 mph N | 0% |
| Wednesday Night | 59°F | Mostly Clear | 2 mph ENE | 0% |
| Thursday | 91°F | Sunny | 2 mph NW | 0% |
| Thursday Night | 59°F | Mostly Clear | 2 mph S | 0% |
| Friday | 87°F | Sunny | 2 mph WSW | 0% |
| Friday Night | 58°F | Mostly Clear | 2 mph W | 0% |
| Saturday | 83°F | Sunny | 2 mph SW | 0% |
| Saturday Night | 56°F | Mostly Clear | 0 to 5 mph W | 1% |
| Sunday | 78°F | Mostly Sunny | 2 mph WNW | 1% |
| Sunday Night | 54°F | Partly Cloudy | 2 mph SSE | 0% |
| Monday | 77°F | Mostly Sunny | 2 mph W | 0% |
| Monday Night | 54°F | Partly Cloudy | 2 mph ENE | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Black Diamond, WA
Last spring frost
Apr 20
First fall frost
Oct 25
Growing season
187 days
Hardiness zone
8b
Explore more for Black Diamond, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Landsburg, Wa (4.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.