Granite, Thursday, 15 October, 00:16
Clear. Feels like 28°. High 41°, low 26°.
Granite, Friday, 16 October
Overcast. High 59°, low 27°.
Granite, Saturday, 17 October
Overcast. High 61°, low 39°.
Granite, Sunday, 18 October
Clear. High 59°, low 39°.
Granite, Monday, 19 October
Overcast. High 63°, low 41°.
Granite, Tuesday, 20 October
Light rain. High 53°, low 39°.
Granite, Wednesday, 21 October
Light rain. High 51°, low 33°.
Granite, Thursday, 22 October
Overcast. High 41°, low 30°.
Granite, Friday, 23 October
Light snow. High 31°, low 22°.
Granite, Saturday, 24 October
Snow. High 32°, low 17°.
Granite, Sunday, 25 October
Overcast. High 41°, low 16°.
Granite, Monday, 26 October
Overcast. High 41°, low 24°.
Granite, Tuesday, 27 October
Partly cloudy. High 48°, low 25°.
Granite, Wednesday, 28 October
Light rain. High 44°, low 31°.
Granite, Thursday, 29 October
Overcast. High 50°, low 31°.
Granite, Friday, 30 October
Light snow. High 36°, low 23°.
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.