Sheffield, Tuesday, 13 October, 06:50
Overcast. Feels like 36°. High 55°, low 36°.
Sheffield, Wednesday, 14 October
Overcast. High 60°, low 33°.
Sheffield, Thursday, 15 October
Clear. High 55°, low 36°.
Sheffield, Friday, 16 October
Clear. High 68°, low 34°.
Sheffield, Saturday, 17 October
Overcast. High 73°, low 38°.
Sheffield, Sunday, 18 October
Clear. High 62°, low 46°.
Sheffield, Monday, 19 October
Partly cloudy. High 73°, low 49°.
Sheffield, Tuesday, 20 October
Overcast. High 63°, low 55°.
Sheffield, Wednesday, 21 October
Rain. High 52°, low 41°.
Sheffield, Thursday, 22 October
Light rain. High 43°, low 39°.
Sheffield, Friday, 23 October
Light rain. High 50°, low 38°.
Sheffield, Saturday, 24 October
Overcast. High 52°, low 40°.
Sheffield, Sunday, 25 October
Light rain. High 53°, low 40°.
Sheffield, Monday, 26 October
Partly cloudy. High 49°, low 38°.
Sheffield, Tuesday, 27 October
Overcast. High 57°, low 39°.
Sheffield, Wednesday, 28 October
Overcast. High 63°, low 44°.
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 Sheffield, 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 Sheffield, 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.