Weather in Big Sky, MT
Big Sky, Friday, 16 October, 07:08
Clear. Feels like 23°. High 57°, low 23°.
Monthly outlook for Big Sky, MT: average high 48.6°, average low 30°. That is 2.1° above the climate normal for October. Precipitation is expected on 2 days (about 1.2 inches), against a normal of 5 days and 1.2 inches. The warmest day looks like 22 October (62°), the coolest 25 October (21.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 16 October – 25 October | 51.5° | 46.9° | +2.6° |
| 26 October – 4 November | 43.6° | 40.5° | +1.7° |
| 5 November – 14 November | at normal | 36.9° | — |
October records over 66 years
0
Big Sky, Saturday, 17 October
Overcast. High 58°, low 31°.
0
Big Sky, Sunday, 18 October
Partly cloudy. High 53°, low 33°.
0Big Sky, Monday, 19 October
Partly cloudy. High 54°, low 35°.
0Big Sky, Tuesday, 20 October
Overcast. High 54°, low 35°.
0.02
Big Sky, Wednesday, 21 October
Light rain. High 55°, low 37°.
0.09Big Sky, Thursday, 22 October
Light rain. High 62°, low 41°.
0.99
Big Sky, Friday, 23 October
Snow. High 44°, low 32°.
0.01Big Sky, Saturday, 24 October
Light snow. High 36°, low 25°.
0Big Sky, Sunday, 25 October
Light snow. High 43°, low 22°.
0Big Sky, Monday, 26 October
Partly cloudy. High 43°, low 26°.
0Big Sky, Tuesday, 27 October
Overcast. High 47°, low 27°.
0.01Big Sky, Wednesday, 28 October
Light rain. High 42°, low 31°.
0.03Big Sky, Thursday, 29 October
Light snow. High 38°, low 28°.
0Big Sky, Friday, 30 October
Partly cloudy. High 42°, low 26°.
0Big Sky, Saturday, 31 October
Overcast. High 49°, low 28°.
0.07
Big Sky, Sunday, 1 November
Climate normal for this date — 60-year average.
0.07Big Sky, Monday, 2 November
Climate normal for this date — 60-year average.
0.07Big Sky, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.06Big Sky, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.09Big Sky, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Big Sky, Friday, 6 November
Climate normal for this date — 60-year average.
0.08Big Sky, Saturday, 7 November
Climate normal for this date — 60-year average.
0.1Big Sky, Sunday, 8 November
Climate normal for this date — 60-year average.
0.07Big Sky, Monday, 9 November
Climate normal for this date — 60-year average.
0.05Big Sky, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Big Sky, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.08Big Sky, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Big Sky, Friday, 13 November
Climate normal for this date — 60-year average.
0.09Big Sky, Saturday, 14 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
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 Big Sky, MT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
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.
Where do the 66-year records come from?
They are real temperature extremes recorded in Big Sky, MT since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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