McDonald, Sunday, 18 October, 14:00
Clear. Feels like 56°. High 60°, low 36°.
McDonald, Monday, 19 October
Partly cloudy. High 66°, low 32°.
McDonald, Tuesday, 20 October
Partly cloudy. High 65°, low 42°.
McDonald, Wednesday, 21 October
Overcast. High 65°, low 45°.
McDonald, Thursday, 22 October
Light rain. High 60°, low 49°.
McDonald, Friday, 23 October
Light rain. High 51°, low 42°.
McDonald, Saturday, 24 October
Overcast. High 52°, low 35°.
McDonald, Sunday, 25 October
Light rain. High 52°, low 40°.
McDonald, Monday, 26 October
Snow. High 42°, low 40°.
McDonald, Tuesday, 27 October
Snow. High 40°, low 38°.
McDonald, Wednesday, 28 October
Light snow. High 47°, low 31°.
McDonald, Thursday, 29 October
Snow. High 38°, low 24°.
McDonald, Friday, 30 October
Light snow. High 36°, low 18°.
McDonald, Saturday, 31 October
Mostly clear. High 41°, low 21°.
McDonald, Sunday, 1 November
Light snow. High 42°, low 25°.
McDonald, Monday, 2 November
Snow. High 43°, low 37°.
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 McDonald, 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 McDonald, 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.