Weather in Black Diamond, WA
Black Diamond, Friday, 13 November, 19:35
Light rain. Feels like 49°. High 53°, low 48°.
Monthly outlook for Black Diamond, WA: average high 50.1°, average low 39.4°. That is 1.6° above the climate normal for November. Precipitation is expected on 7 days (about 1.2 inches), against a normal of 10 days and 4.3 inches. The warmest day looks like 15 November (52.9°), the coolest 17 November (34.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 13 November – 22 November | 51° | 48.2° | +1.5° |
| 23 November – 2 December | 48.8° | 45.3° | +1.9° |
| 3 December – 12 December | at normal | 44° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Kent (10 mi).
0.02Black Diamond, Saturday, 14 November
Light rain. High 52°, low 44°.
0.25Black Diamond, Sunday, 15 November
Light rain. High 53°, low 40°.
0.1Black Diamond, Monday, 16 November
Rain. High 49°, low 37°.
0
Black Diamond, Tuesday, 17 November
Mostly clear. High 49°, low 35°.
0.01Black Diamond, Wednesday, 18 November
Light rain. High 49°, low 43°.
0
Black Diamond, Thursday, 19 November
Clear. High 52°, low 35°.
0Black Diamond, Friday, 20 November
Clear. High 48°, low 35°.
0
Black Diamond, Saturday, 21 November
Overcast. High 52°, low 36°.
0Black Diamond, Sunday, 22 November
Overcast. High 53°, low 38°.
0.1Black Diamond, Monday, 23 November
Light rain. High 45°, low 40°.
0.19Black Diamond, Tuesday, 24 November
Light rain. High 50°, low 42°.
0.07Black Diamond, Wednesday, 25 November
Light rain. High 50°, low 41°.
0Black Diamond, Thursday, 26 November
Overcast. High 47°, low 38°.
0Black Diamond, Friday, 27 November
Overcast. High 52°, low 40°.
0.33Black Diamond, Saturday, 28 November
Rain. High 49°, low 39°.
0.21Black Diamond, Sunday, 29 November
Climate normal for this date — 60-year average.
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.
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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