Bison, Saturday, 10 October, 13:55
Light snow. Feels like 26°. High 44°, low 29°.
Bison, Sunday, 11 October
Snow. High 29°, low 20°.
Bison, Monday, 12 October
Snow. High 37°, low 21°.
Bison, Tuesday, 13 October
Clear. High 44°, low 21°.
Bison, Wednesday, 14 October
Clear. High 46°, low 28°.
Bison, Thursday, 15 October
Clear. High 46°, low 31°.
Bison, Friday, 16 October
Partly cloudy. High 45°, low 25°.
Bison, Saturday, 17 October
Overcast. High 55°, low 32°.
Bison, Sunday, 18 October
Partly cloudy. High 52°, low 35°.
Bison, Monday, 19 October
Light rain. High 46°, low 33°.
Bison, Tuesday, 20 October
Snow. High 37°, low 32°.
Bison, Wednesday, 21 October
Light rain. High 40°, low 31°.
Bison, Thursday, 22 October
Overcast. High 43°, low 25°.
Bison, Friday, 23 October
Light rain. High 49°, low 32°.
Bison, Saturday, 24 October
Overcast. High 47°, low 39°.
Bison, Sunday, 25 October
Partly cloudy. High 53°, low 36°.
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 Bison, 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 Bison, 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.