Black Diamond, WA Weather Forecast
Local 7-day forecast
Chance Light Rain
Track current conditions, temperature changes, wind, and the full daily outlook for Black Diamond, WA in one place.
A chance of rain. Mostly cloudy, with a low around 44.
Local Weather Overview
This forecast page for Black Diamond, WA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 9, 2026 4:07 PM PDT.
The active forecast window currently covers Apr 12 to Apr 15, 2026 for Black Diamond, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 12 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 4:07 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Black Diamond
Monday looks like the warmest upcoming period in Black Diamond at 54 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Tuesday at about 3 to 7 mph SW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 4:07 PM PDT
- Coverage
- 4 days
- Time zone
- America/Los_Angeles
- Forecast office
- SEW
- Radar station
- KATX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain. Mostly cloudy, with a high near 54.
A slight chance of rain before 11pm. Mostly cloudy, with a low around 41.
Rain likely after 11am. Mostly cloudy, with a high near 53.
Rain likely. Mostly cloudy, with a low around 41.
Rain likely. Mostly cloudy, with a high near 54.
A chance of rain. Mostly cloudy, with a low around 37.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday Night
Apr 12
|
Chance Light Rain
|
44°F |
3 mph
SW
|
|
Monday
Apr 12
|
Chance Light Rain
|
54°F |
6 mph
SW
|
|
Monday Night
Apr 13
|
Slight Chance Light Rain then Mostly Cloudy
|
41°F |
6 mph
SSW
|
|
Tuesday
Apr 13
|
Light Rain Likely
|
53°F |
3 to 7 mph
SW
|
|
Tuesday Night
Apr 14
|
Light Rain Likely
|
41°F |
7 mph
SW
|
|
Wednesday
Apr 14
|
Light Rain Likely
|
54°F |
7 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Light Rain
|
37°F |
2 to 6 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Black Diamond.