Weather in John Sam Lake, WA
John Sam Lake, Sunday, 8 November, 04:44
Overcast. Feels like 50°. High 59°, low 48°.
Monthly outlook for John Sam Lake, WA: average high 55.3°, average low 46.8°. That is 3.8° above the climate normal for November. Precipitation is expected on 8 days (about 2.2 inches), against a normal of 10 days and 5.1 inches. The warmest day looks like 11 November (61.5°), the coolest 21 November (43.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 November – 17 November | 56.7° | 49.6° | +4° |
| 18 November – 27 November | 52.9° | 45.9° | +3.9° |
| 28 November – 7 December | at normal | 44.1° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Marysville (4 mi).
0.15
John Sam Lake, Monday, 9 November
Rain. High 58°, low 45°.
0.77John Sam Lake, Tuesday, 10 November
Heavy rain. High 55°, low 47°.
0.07John Sam Lake, Wednesday, 11 November
Rain. High 61°, low 51°.
0.12John Sam Lake, Thursday, 12 November
Light rain. High 60°, low 51°.
0.02John Sam Lake, Friday, 13 November
Light rain. High 56°, low 51°.
0.04John Sam Lake, Saturday, 14 November
Light rain. High 58°, low 52°.
0.31John Sam Lake, Sunday, 15 November
Light rain. High 53°, low 45°.
0
John Sam Lake, Monday, 16 November
Partly cloudy. High 54°, low 44°.
0John Sam Lake, Tuesday, 17 November
Overcast. High 53°, low 45°.
0John Sam Lake, Wednesday, 18 November
Overcast. High 54°, low 44°.
0.44John Sam Lake, Thursday, 19 November
Rain. High 48°, low 45°.
0John Sam Lake, Friday, 20 November
Overcast. High 57°, low 46°.
0.02John Sam Lake, Saturday, 21 November
Light rain. High 56°, low 43°.
0.2John Sam Lake, Sunday, 22 November
Rain. High 52°, low 47°.
0.02John Sam Lake, Monday, 23 November
Light rain. High 50°, low 45°.
0.37John Sam Lake, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.37John Sam Lake, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.25John Sam Lake, Thursday, 26 November
Climate normal for this date — 60-year average.
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.
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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