Weather in Black Diamond, WA
Black Diamond, Saturday, 24 October, 20:11
Overcast. Feels like 48°. High 53°, low 37°.
Monthly outlook for Black Diamond, WA: average high 51.2°, average low 40.5°. That is 1.1° below the climate normal for October. Precipitation is expected on 12 days (about 7.6 inches), against a normal of 9 days and 3.9 inches. The warmest day looks like 8 November (61.7°), the coolest 30 October (32.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 24 October – 2 November | 51.4° | 53.9° | -1.4° |
| 3 November – 12 November | 50.8° | 51.4° | -0.3° |
| 13 November – 22 November | at normal | 48.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Kent (10 mi).
0.5
Black Diamond, Sunday, 25 October
Rain. High 54°, low 42°.
0.11Black Diamond, Monday, 26 October
Light rain. High 57°, low 40°.
0.19Black Diamond, Tuesday, 27 October
Light rain. High 53°, low 45°.
0.43Black Diamond, Wednesday, 28 October
Rain. High 47°, low 40°.
0.32
Black Diamond, Thursday, 29 October
Snow. High 48°, low 37°.
0
Black Diamond, Friday, 30 October
Partly cloudy. High 51°, low 33°.
0
Black Diamond, Saturday, 31 October
Clear. High 50°, low 34°.
0Black Diamond, Sunday, 1 November
Overcast. High 48°, low 37°.
0.53Black Diamond, Monday, 2 November
Rain. High 53°, low 43°.
0.92Black Diamond, Tuesday, 3 November
Rain. High 49°, low 43°.
0.62Black Diamond, Wednesday, 4 November
Rain. High 48°, low 43°.
1.52Black Diamond, Thursday, 5 November
Rain. High 51°, low 44°.
0.82Black Diamond, Friday, 6 November
Rain. High 44°, low 40°.
0.96Black Diamond, Saturday, 7 November
Rain. High 50°, low 43°.
0.64Black Diamond, Sunday, 8 November
Rain. High 62°, low 47°.
0.24Black Diamond, Monday, 9 November
Climate normal for this date — 60-year average.
0.2Black Diamond, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.24Black Diamond, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.28Black Diamond, Thursday, 12 November
Climate normal for this date — 60-year average.
0.29Black Diamond, Friday, 13 November
Climate normal for this date — 60-year average.
0.31Black Diamond, Saturday, 14 November
Climate normal for this date — 60-year average.
0.24Black Diamond, Sunday, 15 November
Climate normal for this date — 60-year average.
0.23Black Diamond, Monday, 16 November
Climate normal for this date — 60-year average.
0.26Black Diamond, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.19Black Diamond, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.31Black Diamond, Thursday, 19 November
Climate normal for this date — 60-year average.
0.24Black Diamond, Friday, 20 November
Climate normal for this date — 60-year average.
0.24Black Diamond, Saturday, 21 November
Climate normal for this date — 60-year average.
0.26Black Diamond, Sunday, 22 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Black Diamond, WA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Black Diamond, WA since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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