Black Diamond, WA Weather Forecast
Local 7-day forecast
Patchy Fog then Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Black Diamond, WA in one place.
Patchy fog before 7am. Mostly sunny, with a high near 80. West wind 0 to 3 mph.
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: Jul 17, 2026 12:25 AM PDT.
The active forecast window currently covers Jul 18 to Jul 23, 2026 for Black Diamond, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 18 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 12:25 AM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Black Diamond
Tuesday looks like the warmest upcoming period in Black Diamond at 90 degrees F.
Saturday Night is the coolest period ahead with temperatures near 55 degrees F.
The strongest winds are forecast for Saturday at about 0 to 3 mph W.
The forecast from Jul 18 through Jul 23 stays mostly dry.
Forecast Details
- Last updated
- Jul 17, 2026 12:25 AM PDT
- Coverage
- 6 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
Mostly clear, with a low around 55. North wind 0 to 3 mph.
Sunny, with a high near 83.
Mostly clear, with a low around 57.
Mostly sunny, with a high near 88.
Partly cloudy, with a low around 63.
Mostly sunny, with a high near 90.
Partly cloudy, with a low around 62.
Sunny, with a high near 88.
Mostly clear, with a low around 61.
Sunny, with a high near 86.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jul 18
|
Patchy Fog then Mostly Sunny
|
80°F |
0 to 3 mph
W
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
55°F |
0 to 3 mph
N
|
|
Sunday
Jul 19
|
Sunny
|
83°F |
0 to 3 mph
NNW
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
57°F |
3 mph
NE
|
|
Monday
Jul 20
|
Mostly Sunny
|
88°F |
2 mph
NNE
|
|
Monday Night
Jul 20
|
Partly Cloudy
|
63°F |
2 mph
N
|
|
Tuesday
Jul 21
|
Mostly Sunny
|
90°F |
2 mph
NW
|
|
Tuesday Night
Jul 21
|
Partly Cloudy
|
62°F |
2 mph
SW
|
|
Wednesday
Jul 22
|
Sunny
|
88°F |
0 to 3 mph
WNW
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
61°F |
2 mph
SW
|
|
Thursday
Jul 23
|
Sunny
|
86°F |
0 to 3 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Black Diamond.