Black Diamond, WA Weather Forecast
Local 7-day forecast
Patchy Fog then Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Black Diamond, WA in one place.
Patchy fog before 8am. Sunny. High near 68, with temperatures falling to around 66 in the afternoon. North northeast wind around 2 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: Oct 20, 2026 3:12 PM PDT.
The active forecast window currently covers Oct 21 to Oct 26, 2026 for Black Diamond, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 21 to Oct 26, 2026
- Latest sync
- Oct 20, 2026 3:12 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Black Diamond
Wednesday looks like the warmest upcoming period in Black Diamond at 68 degrees F.
Friday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Saturday Night at about 3 mph ESE.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 20, 2026 3:12 PM PDT
- Coverage
- 7 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
Partly cloudy, with a low around 42. Northeast wind around 1 mph.
A chance of rain after 5pm. Partly sunny, with a high near 60. North northwest wind around 2 mph. Chance of precipitation is 30%.
A chance of rain before 5am. Mostly cloudy, with a low around 41. Chance of precipitation is 30%.
Partly sunny, with a high near 57.
Partly cloudy, with a low around 35.
A chance of rain after 11am. Mostly cloudy, with a high near 56.
A chance of rain. Mostly cloudy, with a low around 38.
A slight chance of rain. Partly sunny, with a high near 61.
A slight chance of rain before 11pm. Mostly cloudy, with a low around 39.
A slight chance of rain after 5pm. Mostly sunny, with a high near 61.
A slight chance of rain before 5am. Partly cloudy, with a low around 38.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Oct 21
|
Patchy Fog then Sunny
|
68°F |
2 mph
NNE
|
|
Wednesday Night
Oct 21
|
Partly Cloudy
|
42°F |
1 mph
NE
|
|
Thursday
Oct 22
|
Partly Sunny then Chance Light Rain
|
60°F |
2 mph
NNW
|
|
Thursday Night
Oct 22
|
Chance Light Rain
|
41°F |
1 mph
WNW
|
|
Friday
Oct 23
|
Partly Sunny
|
57°F |
1 mph
NNW
|
|
Friday Night
Oct 23
|
Partly Cloudy
|
35°F |
2 mph
E
|
|
Saturday
Oct 24
|
Chance Light Rain
|
56°F |
1 mph
ENE
|
|
Saturday Night
Oct 24
|
Chance Light Rain
|
38°F |
3 mph
ESE
|
|
Sunday
Oct 25
|
Slight Chance Light Rain
|
61°F |
0 to 3 mph
NE
|
|
Sunday Night
Oct 25
|
Slight Chance Light Rain then Mostly Cloudy
|
39°F |
2 mph
ENE
|
|
Monday
Oct 26
|
Mostly Sunny then Slight Chance Light Rain
|
61°F |
2 mph
NE
|
|
Monday Night
Oct 26
|
Slight Chance Light Rain
|
38°F |
2 mph
E
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Black Diamond.