Weather in Mount Vernon, WA
Mount Vernon, Sunday, 18 October, 12:23
Overcast. Feels like 52°. High 55°, low 41°.
Monthly outlook for Mount Vernon, WA: average high 53.8°, average low 40.7°. That is 0.3° below the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 9 days and 4.2 inches. The warmest day looks like 21 October (63.3°), the coolest 31 October (34.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 55.4° | 55.4° | -0° |
| 28 October – 6 November | 51° | 52° | -0.5° |
| 7 November – 16 November | at normal | 49.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Stanwood (12 mi).
0Mount Vernon, Monday, 19 October
Overcast. High 63°, low 47°.
0
Mount Vernon, Tuesday, 20 October
Partly cloudy. High 58°, low 40°.
0
Mount Vernon, Wednesday, 21 October
Clear. High 63°, low 40°.
0.02
Mount Vernon, Thursday, 22 October
Light rain. High 55°, low 43°.
0.09Mount Vernon, Friday, 23 October
Light rain. High 52°, low 41°.
0.02Mount Vernon, Saturday, 24 October
Light rain. High 53°, low 42°.
0.08Mount Vernon, Sunday, 25 October
Light rain. High 50°, low 46°.
0Mount Vernon, Monday, 26 October
Partly cloudy. High 53°, low 40°.
0Mount Vernon, Tuesday, 27 October
Clear. High 53°, low 38°.
0.14Mount Vernon, Wednesday, 28 October
Light rain. High 49°, low 44°.
0.01Mount Vernon, Thursday, 29 October
Light rain. High 50°, low 37°.
0Mount Vernon, Friday, 30 October
Clear. High 51°, low 35°.
0Mount Vernon, Saturday, 31 October
Clear. High 49°, low 34°.
0.03Mount Vernon, Sunday, 1 November
Light rain. High 51°, low 40°.
0.43Mount Vernon, Monday, 2 November
Light rain. High 56°, low 43°.
0.34Mount Vernon, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.39Mount Vernon, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.23Mount Vernon, Thursday, 5 November
Climate normal for this date — 60-year average.
0.35Mount Vernon, Friday, 6 November
Climate normal for this date — 60-year average.
0.33Mount Vernon, Saturday, 7 November
Climate normal for this date — 60-year average.
0.28Mount Vernon, Sunday, 8 November
Climate normal for this date — 60-year average.
0.3Mount Vernon, Monday, 9 November
Climate normal for this date — 60-year average.
0.25
Mount Vernon, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.31Mount Vernon, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.33Mount Vernon, Thursday, 12 November
Climate normal for this date — 60-year average.
0.37Mount Vernon, Friday, 13 November
Climate normal for this date — 60-year average.
0.3Mount Vernon, Saturday, 14 November
Climate normal for this date — 60-year average.
0.33Mount Vernon, Sunday, 15 November
Climate normal for this date — 60-year average.
0.33Mount Vernon, Monday, 16 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 Mount Vernon, 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 Mount Vernon, 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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