Granite, Sunday, 11 October, 06:24
Snow. Feels like 17°. High 29°, low 25°.
Granite, Monday, 12 October
Snow. High 36°, low 24°.
Granite, Tuesday, 13 October
Clear. High 45°, low 26°.
Granite, Wednesday, 14 October
Clear. High 50°, low 28°.
Granite, Thursday, 15 October
Clear. High 54°, low 33°.
Granite, Friday, 16 October
Clear. High 62°, low 30°.
Granite, Saturday, 17 October
Partly cloudy. High 61°, low 37°.
Granite, Sunday, 18 October
Overcast. High 59°, low 42°.
Granite, Monday, 19 October
Partly cloudy. High 53°, low 36°.
Granite, Tuesday, 20 October
Overcast. High 44°, low 29°.
Granite, Wednesday, 21 October
Overcast. High 49°, low 27°.
Granite, Thursday, 22 October
Light rain. High 55°, low 35°.
Granite, Friday, 23 October
Clear. High 48°, low 31°.
Granite, Saturday, 24 October
Overcast. High 52°, low 32°.
Granite, Sunday, 25 October
Clear. High 58°, low 33°.
Granite, Monday, 26 October
Clear. High 61°, 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 Granite, 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 Granite, 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.