West Yellowstone, Sunday, 9 August, 00:13
Overcast. Feels like 56°. High 84°, low 49°.
West Yellowstone, Monday, 10 August
Clear. High 88°, low 47°.
West Yellowstone, Tuesday, 11 August
Clear. High 87°, low 51°.
West Yellowstone, Wednesday, 12 August
Overcast. High 82°, low 54°.
West Yellowstone, Thursday, 13 August
Light rain. High 83°, low 51°.
West Yellowstone, Friday, 14 August
Light rain. High 73°, low 56°.
West Yellowstone, Saturday, 15 August
Light rain. High 79°, low 51°.
West Yellowstone, Sunday, 16 August
Light rain. High 81°, low 49°.
West Yellowstone, Monday, 17 August
Light rain. High 83°, low 50°.
West Yellowstone, Tuesday, 18 August
Overcast. High 80°, low 57°.
West Yellowstone, Wednesday, 19 August
Light rain. High 78°, low 52°.
West Yellowstone, Thursday, 20 August
Mostly clear. High 82°, low 51°.
West Yellowstone, Friday, 21 August
Light rain. High 77°, low 49°.
West Yellowstone, Saturday, 22 August
Clear. High 82°, low 48°.
West Yellowstone, Sunday, 23 August
Mostly clear. High 85°, low 50°.
West Yellowstone, Monday, 24 August
Partly cloudy. High 82°, low 52°.
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 Yellowstone, MT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
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.
They are real temperature extremes recorded in West Yellowstone, MT since 1960: the highest and lowest reading for each calendar date, with the year it happened.
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.