Weather in Mercer Island, WA
Mercer Island, Thursday, 12 November, 16:13
Clear. Feels like 56°. High 58°, low 51°.
Monthly outlook for Mercer Island, WA: average high 48.9°, average low 41.6°. That is 0.8° above the climate normal for November. Precipitation is expected on 7 days (about 1.2 inches), against a normal of 10 days and 4.4 inches. The warmest day looks like 13 November (62.1°), the coolest 26 November (32.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 12 November – 21 November | 51.5° | 48.5° | +1.7° |
| 22 November – 1 December | 44.6° | 45.2° | -0.4° |
| 2 December – 11 December | at normal | 43.8° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Bellevue (4 mi).
0.04
Mercer Island, Friday, 13 November
Light rain. High 62°, low 53°.
0.19Mercer Island, Saturday, 14 November
Rain. High 56°, low 49°.
0.31Mercer Island, Sunday, 15 November
Rain. High 56°, low 47°.
0.17Mercer Island, Monday, 16 November
Light rain. High 50°, low 45°.
0Mercer Island, Tuesday, 17 November
Clear. High 49°, low 43°.
0.28Mercer Island, Wednesday, 18 November
Light rain. High 45°, low 42°.
0.05Mercer Island, Thursday, 19 November
Light rain. High 46°, low 43°.
0
Mercer Island, Friday, 20 November
Overcast. High 47°, low 39°.
0Mercer Island, Saturday, 21 November
Clear. High 47°, low 37°.
0.01Mercer Island, Sunday, 22 November
Light rain. High 45°, low 39°.
0.07Mercer Island, Monday, 23 November
Light rain. High 45°, low 38°.
0Mercer Island, Tuesday, 24 November
Clear. High 44°, low 34°.
0Mercer Island, Wednesday, 25 November
Clear. High 45°, low 33°.
0Mercer Island, Thursday, 26 November
Clear. High 47°, low 32°.
0.04Mercer Island, Friday, 27 November
Light rain. High 42°, low 39°.
0.2Mercer Island, Saturday, 28 November
Climate normal for this date — 60-year average.
0.22Mercer Island, Sunday, 29 November
Climate normal for this date — 60-year average.
0.25Mercer Island, Monday, 30 November
Climate normal for this date — 60-year average.
0.24Mercer Island, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.31Mercer Island, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.32Mercer Island, Thursday, 3 December
Climate normal for this date — 60-year average.
0.26Mercer Island, Friday, 4 December
Climate normal for this date — 60-year average.
0.19
Mercer Island, Saturday, 5 December
Climate normal for this date — 60-year average.
0.19Mercer Island, Sunday, 6 December
Climate normal for this date — 60-year average.
0.2Mercer Island, Monday, 7 December
Climate normal for this date — 60-year average.
0.23Mercer Island, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.27Mercer Island, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.31Mercer Island, Thursday, 10 December
Climate normal for this date — 60-year average.
0.27Mercer Island, Friday, 11 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 Mercer Island, 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 Mercer Island, 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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