Weather in West Thumb, WY
West Thumb, Sunday, 18 October, 23:48
Clear. Feels like 29°. High 55°, low 24°.
Monthly outlook for West Thumb, WY: average high 40.5°, average low 23.1°. That is 0.1° above the climate normal for October. Precipitation is expected on 7 days (about 1.6 inches), against a normal of 6 days and 1.3 inches. The warmest day looks like 19 October (57.3°), the coolest 31 October (10.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 45.8° | 42.4° | +1.9° |
| 28 October – 6 November | 31.6° | 36.1° | -2.5° |
| 7 November – 16 November | at normal | 32.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Lake (13 mi).
0
West Thumb, Monday, 19 October
Partly cloudy. High 57°, low 24°.
0.07
West Thumb, Tuesday, 20 October
Light rain. High 51°, low 27°.
0.09West Thumb, Wednesday, 21 October
Rain. High 53°, low 35°.
0.02West Thumb, Thursday, 22 October
Light rain. High 52°, low 37°.
0.35
West Thumb, Friday, 23 October
Snow. High 39°, low 32°.
0
West Thumb, Saturday, 24 October
Overcast. High 34°, low 19°.
0.03West Thumb, Sunday, 25 October
Light snow. High 37°, low 17°.
0.01West Thumb, Monday, 26 October
Light snow. High 38°, low 20°.
0
West Thumb, Tuesday, 27 October
Mostly clear. High 43°, low 20°.
0.15West Thumb, Wednesday, 28 October
Snow. High 45°, low 27°.
0.39West Thumb, Thursday, 29 October
Snow. High 34°, low 21°.
0.04West Thumb, Friday, 30 October
Light snow. High 27°, low 14°.
0.04West Thumb, Saturday, 31 October
Light snow. High 23°, low 11°.
0.07West Thumb, Sunday, 1 November
Light snow. High 28°, low 21°.
0.36West Thumb, Monday, 2 November
Snow. High 33°, low 22°.
0.08
West Thumb, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.08West Thumb, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.1West Thumb, Thursday, 5 November
Climate normal for this date — 60-year average.
0.11West Thumb, Friday, 6 November
Climate normal for this date — 60-year average.
0.12West Thumb, Saturday, 7 November
Climate normal for this date — 60-year average.
0.13West Thumb, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11West Thumb, Monday, 9 November
Climate normal for this date — 60-year average.
0.08West Thumb, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.09West Thumb, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.1West Thumb, Thursday, 12 November
Climate normal for this date — 60-year average.
0.11West Thumb, Friday, 13 November
Climate normal for this date — 60-year average.
0.1West Thumb, Saturday, 14 November
Climate normal for this date — 60-year average.
0.05West Thumb, Sunday, 15 November
Climate normal for this date — 60-year average.
0.1West Thumb, 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 West Thumb, WY 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 West Thumb, WY 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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