| NWS Forecast for: Black Diamond WA Issued by: National Weather Service Seattle, WA Last Update: 2:30 pm PDT Oct 7, 2026 |  |
| Tonight: Mostly clear, with a low around 48. Calm wind. Thursday: Partly sunny, with a high near 71. Calm wind. Thursday Night: Increasing clouds, with a low around 50. Calm wind. Friday: Rain likely, mainly before 11am. Mostly cloudy, with a high near 60. Southwest wind 5 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible. Friday Night: A 40 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 43. South southwest wind 7 to 9 mph, with gusts as high as 21 mph. Saturday: A 20 percent chance of rain. Partly sunny, with a high near 58. Saturday Night: Partly cloudy, with a low around 37. Sunday: Sunny, with a high near 60. Sunday Night: Mostly clear, with a low around 36. Columbus Day: Sunny, with a high near 61. Monday Night: Mostly clear, with a low around 41. Tuesday: A slight chance of rain. Mostly sunny, with a high near 63. Tuesday Night: A chance of rain. Mostly cloudy, with a low around 42. Wednesday: A slight chance of rain. Partly sunny, with a high near 60. | |
| Black Diamond WA 47.31°N 122.01°W (Elev. 584 ft) | |
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