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As of 17:33 MDT

Weather in Big Sky, MT

81°Current weather

Big Sky, Saturday, 8 August, 17:33

Clear. Feels like 79°. High 82°, low 50°.

Pressure29.80 inHg
Wind9.4 mph W
Humidity15%
Visibility6.2 mi
Dew point30°
Sun, 0978° / 48°0Overcast
78 °Overcast

Big Sky, Sunday, 9 August

Overcast. High 78°, low 48°.

Pressure29.91 inHg
Wind9 mph W
Humidity13%
Visibility6.2 mi
Dew point22°
Mon, 1084° / 46°0Clear
84 °Clear

Big Sky, Monday, 10 August

Clear. High 84°, low 46°.

Pressure29.85 inHg
Wind14.2 mph W
Humidity12%
Visibility6.2 mi
Dew point21°
Tue, 1183° / 54°0Clear
83 °Clear

Big Sky, Tuesday, 11 August

Clear. High 83°, low 54°.

Pressure29.97 inHg
Wind7.9 mph W
Humidity12%
Visibility6.2 mi
Dew point20°
Wed, 1283° / 54°0.01Light rain
83 °Light rain

Big Sky, Wednesday, 12 August

Light rain. High 83°, low 54°.

Pressure29.85 inHg
Wind6.7 mph W
Humidity13%
Visibility6.2 mi
Dew point24°
Thu, 1383° / 52°0.01Light rain
83 °Light rain

Big Sky, Thursday, 13 August

Light rain. High 83°, low 52°.

Pressure29.85 inHg
Wind9.4 mph SW
Humidity15%
Visibility—
Dew point25°
Fri, 1482° / 59°0Overcast
82 °Overcast

Big Sky, Friday, 14 August

Overcast. High 82°, low 59°.

Pressure29.91 inHg
Wind9.4 mph W
Humidity20%
Visibility—
Dew point32°
Sat, 1569° / 57°0.07Light rain
69 °Light rain

Big Sky, Saturday, 15 August

Light rain. High 69°, low 57°.

Pressure30.06 inHg
Wind4.6 mph E
Humidity45%
Visibility—
Dew point45°
Sun, 1680° / 51°0.02Light rain
80 °Light rain

Big Sky, Sunday, 16 August

Light rain. High 80°, low 51°.

Pressure30.09 inHg
Wind10.8 mph SW
Humidity24%
Visibility—
Dew point34°
Mon, 1783° / 57°0Partly cloudy
83 °Partly cloudy

Big Sky, Monday, 17 August

Partly cloudy. High 83°, low 57°.

Pressure30.09 inHg
Wind8.6 mph NW
Humidity15%
Visibility—
Dew point25°
Tue, 1882° / 55°0.01Light rain
82 °Light rain

Big Sky, Tuesday, 18 August

Light rain. High 82°, low 55°.

Pressure29.94 inHg
Wind15.9 mph S
Humidity22%
Visibility—
Dew point36°
Wed, 1979° / 48°0Clear
79 °Clear

Big Sky, Wednesday, 19 August

Clear. High 79°, low 48°.

Pressure30.06 inHg
Wind6.5 mph NW
Humidity27%
Visibility—
Dew point36°
Thu, 2082° / 55°0Partly cloudy
82 °Partly cloudy

Big Sky, Thursday, 20 August

Partly cloudy. High 82°, low 55°.

Pressure29.97 inHg
Wind9.3 mph W
Humidity18%
Visibility—
Dew point29°
Fri, 2186° / 59°0Clear
86 °Clear

Big Sky, Friday, 21 August

Clear. High 86°, low 59°.

Pressure29.97 inHg
Wind10.6 mph NW
Humidity17%
Visibility—
Dew point30°
Sat, 2286° / 57°0Partly cloudy
86 °Partly cloudy

Big Sky, Saturday, 22 August

Partly cloudy. High 86°, low 57°.

Pressure29.97 inHg
Wind11.2 mph W
Humidity18%
Visibility—
Dew point32°
Sun, 2386° / 58°0Overcast
86 °Overcast

Big Sky, Sunday, 23 August

Overcast. High 86°, low 58°.

Pressure30.00 inHg
Wind8.2 mph NE
Humidity20%
Visibility—
Dew point37°

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.