Weather in Big Sky, MT
Big Sky, Friday, 16 October, 02:05
Overcast. Feels like 24°. High 54°, low 24°.
Monthly outlook for Big Sky, MT: average high 44°, average low 25.8°. That is 0.5° below the climate normal for October. Precipitation is expected on 6 days (about 1.5 inches), against a normal of 5 days and 1.2 inches. The warmest day looks like 21 October (56.5°), the coolest 24 October (12.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 16 October – 25 October | 48.7° | 46.9° | +1° |
| 26 October – 4 November | 36.1° | 40.5° | -2.5° |
| 5 November – 14 November | at normal | 36.9° | — |
October records over 66 years
0Big Sky, Saturday, 17 October
Overcast. High 55°, low 31°.
0
Big Sky, Sunday, 18 October
Partly cloudy. High 53°, low 33°.
0Big Sky, Monday, 19 October
Overcast. High 53°, low 34°.
0.06
Big Sky, Tuesday, 20 October
Light rain. High 52°, low 35°.
0Big Sky, Wednesday, 21 October
Partly cloudy. High 56°, low 36°.
0.07Big Sky, Thursday, 22 October
Light rain. High 54°, low 40°.
0.66
Big Sky, Friday, 23 October
Snow. High 42°, low 26°.
0.19Big Sky, Saturday, 24 October
Snow. High 30°, low 12°.
0
Big Sky, Sunday, 25 October
Mostly clear. High 37°, low 12°.
0.31Big Sky, Monday, 26 October
Snow. High 31°, low 22°.
0.01Big Sky, Tuesday, 27 October
Light snow. High 34°, low 16°.
0Big Sky, Wednesday, 28 October
Overcast. High 36°, low 21°.
0Big Sky, Thursday, 29 October
Overcast. High 40°, low 20°.
0.16Big Sky, Friday, 30 October
Snow. High 38°, low 26°.
0Big Sky, Saturday, 31 October
Overcast. High 36°, low 24°.
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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