Weather in John Sam Lake, WA
John Sam Lake, Wednesday, 11 November, 14:08
Clear. Feels like 67°. High 68°, low 53°.
Monthly outlook for John Sam Lake, WA: average high 52.1°, average low 42.2°. That is 2.6° above the climate normal for November. Precipitation is expected on 5 days (about 0.7 inches), against a normal of 11 days and 5.3 inches. The warmest day looks like 11 November (67.9°), the coolest 20 November (34.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 November – 20 November | 53.8° | 48.6° | +2.9° |
| 21 November – 30 November | 49.2° | 45.1° | +2.3° |
| 1 December – 10 December | at normal | 43.7° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Marysville (4 mi).
0
John Sam Lake, Thursday, 12 November
Overcast. High 62°, low 53°.
0.11
John Sam Lake, Friday, 13 November
Light rain. High 58°, low 48°.
0.05John Sam Lake, Saturday, 14 November
Light rain. High 56°, low 48°.
0.17John Sam Lake, Sunday, 15 November
Light rain. High 54°, low 46°.
0.13John Sam Lake, Monday, 16 November
Rain. High 50°, low 44°.
0
John Sam Lake, Tuesday, 17 November
Mostly clear. High 51°, low 39°.
0.02John Sam Lake, Wednesday, 18 November
Light rain. High 45°, low 40°.
0John Sam Lake, Thursday, 19 November
Overcast. High 48°, low 38°.
0John Sam Lake, Friday, 20 November
Clear. High 46°, low 35°.
0John Sam Lake, Saturday, 21 November
Clear. High 48°, low 35°.
0
John Sam Lake, Sunday, 22 November
Partly cloudy. High 50°, low 35°.
0John Sam Lake, Monday, 23 November
Overcast. High 49°, low 36°.
0John Sam Lake, Tuesday, 24 November
Overcast. High 47°, low 37°.
0.2John Sam Lake, Wednesday, 25 November
Rain. High 46°, low 43°.
0John Sam Lake, Thursday, 26 November
Overcast. High 55°, low 46°.
0.35John Sam Lake, Friday, 27 November
Climate normal for this date — 60-year average.
0.26John Sam Lake, Saturday, 28 November
Climate normal for this date — 60-year average.
0.27John Sam Lake, Sunday, 29 November
Climate normal for this date — 60-year average.
0.31John Sam Lake, Monday, 30 November
Climate normal for this date — 60-year average.
0.32John Sam Lake, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.36John Sam Lake, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.36John Sam Lake, Thursday, 3 December
Climate normal for this date — 60-year average.
0.29John Sam Lake, Friday, 4 December
Climate normal for this date — 60-year average.
0.25John Sam Lake, Saturday, 5 December
Climate normal for this date — 60-year average.
0.24John Sam Lake, Sunday, 6 December
Climate normal for this date — 60-year average.
0.24John Sam Lake, Monday, 7 December
Climate normal for this date — 60-year average.
0.3John Sam Lake, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.31John Sam Lake, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.38John Sam Lake, Thursday, 10 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 John Sam Lake, 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 John Sam Lake, 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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