Darby, Thursday, 15 October, 11:16
Clear. Feels like 46°. High 51°, low 33°.
Darby, Friday, 16 October
Overcast. High 66°, low 36°.
Darby, Saturday, 17 October
Overcast. High 69°, low 37°.
Darby, Sunday, 18 October
Clear. High 64°, low 35°.
Darby, Monday, 19 October
Partly cloudy. High 69°, low 38°.
Darby, Tuesday, 20 October
Overcast. High 64°, low 42°.
Darby, Wednesday, 21 October
Rain. High 53°, low 47°.
Darby, Thursday, 22 October
Light rain. High 53°, low 45°.
Darby, Friday, 23 October
Snow. High 47°, low 34°.
Darby, Saturday, 24 October
Overcast. High 49°, low 33°.
Darby, Sunday, 25 October
Snow. High 37°, low 28°.
Darby, Monday, 26 October
Light snow. High 43°, low 27°.
Darby, Tuesday, 27 October
Snow. High 41°, low 27°.
Darby, Wednesday, 28 October
Snow. High 42°, low 29°.
Darby, Thursday, 29 October
Snow. High 36°, low 23°.
Darby, Friday, 30 October
Light snow. High 39°, low 20°.
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 Darby, 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 Darby, 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.