Weather in Black Diamond, WA
Black Diamond, Saturday, 14 November, 12:59
Overcast. Feels like 55°. High 56°, low 47°.
Monthly outlook for Black Diamond, WA: average high 50.5°, average low 40.2°. That is 2° above the climate normal for November. Precipitation is expected on 8 days (about 1.6 inches), against a normal of 10 days and 4.3 inches. The warmest day looks like 14 November (55.5°), the coolest 17 November (34.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 14 November – 23 November | 51.1° | 47.7° | +1.9° |
| 24 November – 3 December | 49.4° | 45.2° | +2.3° |
| 4 December – 13 December | at normal | 43.8° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Kent (10 mi).
0.26
Black Diamond, Sunday, 15 November
Rain. High 55°, low 47°.
0.07Black Diamond, Monday, 16 November
Light rain. High 51°, low 38°.
0
Black Diamond, Tuesday, 17 November
Clear. High 50°, low 34°.
0Black Diamond, Wednesday, 18 November
Overcast. High 52°, low 44°.
0Black Diamond, Thursday, 19 November
Clear. High 52°, low 36°.
0Black Diamond, Friday, 20 November
Overcast. High 48°, low 35°.
0.22Black Diamond, Saturday, 21 November
Light rain. High 46°, low 43°.
0.06Black Diamond, Sunday, 22 November
Light rain. High 53°, low 40°.
0.26Black Diamond, Monday, 23 November
Light rain. High 49°, low 40°.
0.6Black Diamond, Tuesday, 24 November
Rain. High 47°, low 44°.
0Black Diamond, Wednesday, 25 November
Overcast. High 47°, low 40°.
0Black Diamond, Thursday, 26 November
Clear. High 53°, low 36°.
0
Black Diamond, Friday, 27 November
Mostly clear. High 54°, low 37°.
0Black Diamond, Saturday, 28 November
Overcast. High 49°, low 39°.
0.09Black Diamond, Sunday, 29 November
Light rain. High 47°, low 44°.
0.26Black Diamond, Monday, 30 November
Climate normal for this date — 60-year average.
0.25Black Diamond, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.32Black Diamond, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.31Black Diamond, Thursday, 3 December
Climate normal for this date — 60-year average.
0.26Black Diamond, Friday, 4 December
Climate normal for this date — 60-year average.
0.2
Black Diamond, Saturday, 5 December
Climate normal for this date — 60-year average.
0.19Black Diamond, Sunday, 6 December
Climate normal for this date — 60-year average.
0.21Black Diamond, Monday, 7 December
Climate normal for this date — 60-year average.
0.25Black Diamond, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.27Black Diamond, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.34Black Diamond, Thursday, 10 December
Climate normal for this date — 60-year average.
0.28Black Diamond, Friday, 11 December
Climate normal for this date — 60-year average.
0.27Black Diamond, Saturday, 12 December
Climate normal for this date — 60-year average.
0.27Black Diamond, Sunday, 13 December
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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