Weather in West Thumb, WY
West Thumb, Sunday, 18 October, 13:17
Overcast. Feels like 47°. High 53°, low 24°.
Monthly outlook for West Thumb, WY: average high 41.8°, average low 23.3°. That is 0.9° above the climate normal for October. Precipitation is expected on 8 days (about 2.2 inches), against a normal of 6 days and 1.3 inches. The warmest day looks like 19 October (57.5°), the coolest 31 October (3.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 48.2° | 42.4° | +3.2° |
| 28 October – 6 November | 31° | 36.1° | -2.8° |
| 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).
0West Thumb, Monday, 19 October
Overcast. High 58°, low 24°.
0.21
West Thumb, Tuesday, 20 October
Rain. High 52°, low 30°.
0.01West Thumb, Wednesday, 21 October
Light rain. High 52°, low 33°.
0.05West Thumb, Thursday, 22 October
Light rain. High 52°, low 37°.
0.89
West Thumb, Friday, 23 October
Snow. High 38°, low 28°.
0West Thumb, Saturday, 24 October
Overcast. High 44°, low 27°.
0
West Thumb, Sunday, 25 October
Clear. High 48°, low 29°.
0West Thumb, Monday, 26 October
Overcast. High 52°, low 30°.
0.07West Thumb, Tuesday, 27 October
Light snow. High 33°, low 22°.
0.04West Thumb, Wednesday, 28 October
Light snow. High 34°, low 19°.
0.22West Thumb, Thursday, 29 October
Snow. High 36°, low 23°.
0.24West Thumb, Friday, 30 October
Snow. High 21°, low 6°.
0
West Thumb, Saturday, 31 October
Partly cloudy. High 27°, low 4°.
0.01West Thumb, Sunday, 1 November
Light snow. High 35°, low 7°.
0.43West Thumb, Monday, 2 November
Snow. High 35°, low 29°.
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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