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Big Sky MT Weather - Clear - 64°F
Clear
64°F
Updated 12:24 pm
Feels Like 51°F
Humidity 39%
Wind N 10 mph
Barometer  30.05 in
Dew Point 39°F
Big Sky MT Weather - Clear - 18°C
Clear
18°C
Updated 12:24 pm
Feels Like 11°C
Humidity 39%
Wind N 16 km/h
Barometer  101.7 kPa
Dew Point 4°C
Big Sky, MT Weather and Current Conditionsbig sky mt weather forecast

Big Sky, MT Weather Forecast

Big Sky Montana WeatherBig Sky, Montana Weather Weather Forecast
14 day API Big Sky, MT weather forecast. Note. Our 7-day weather forecast for Big Sky, Montana is our most reliable and accurate forecast. This model should only be used as a likely scenario. Forecasting more than 7 days is difficult.
Big Sky, MT Weather Forecast Dated: 1224 PM Fri Sep 11 2026
Expect a cool pattern with a mix of sun and clouds and frequent chances of rain over the coming period. moderate humidity and no major pressure swings will dominate.

Friday, September 11, 2026

Mid-Morning
Big Sky Weather - 2026-09-11 - Morning - Scattered Showers
55°F 13°C
Scattered Showers
Mid-Afternoon
Big Sky Weather - 2026-09-11 - Afternoon - Overcast
64°F 18°C
Overcast
Early-Evening
Big Sky Weather - 2026-09-11 - Evening - Nearby Thunderstorms
49°F 10°C
Nearby Thunderstorms
Refreshing around 64°F 18°C, periods of heavy rain and gusty conditions, with increasing humidity and barometric pressure rising. Winds turning from the WSW to the NNE at 7 mph 10 km/h.

Saturday, September 12, 2026

Mid-Morning
Big Sky Weather - 2026-09-12 - Morning - Cloudy
44°F 7°C
Cloudy
Mid-Afternoon
Big Sky Weather - 2026-09-12 - Afternoon - Overcast
66°F 19°C
Overcast
Early-Evening
Big Sky Weather - 2026-09-12 - Evening - Overcast
49°F 10°C
Overcast
Mildly cool near 66°F 19°C, cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and barometric pressure falling. Winds switching from the SE to the ENE at 6 mph 10 km/h.

Sunday, September 13, 2026

Mid-Morning
Big Sky Weather - 2026-09-13 - Morning - Cloudy
44°F 7°C
Cloudy
Mid-Afternoon
Big Sky Weather - 2026-09-13 - Afternoon - Sunny
53°F 12°C
Sunny
Early-Evening
Big Sky Weather - 2026-09-13 - Evening - Overcast
44°F 7°C
Overcast
Chilly near 53°F 12°C, overcast in the morning, sunny in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds moving from the SE to the WSW at 12 mph 19 km/h. Gusts up to 22 mph 35 km/h.

Monday, September 14, 2026

Mid-Morning
Big Sky Weather - 2026-09-14 - Morning - Sunny
38°F 3°C
Sunny
Mid-Afternoon
Big Sky Weather - 2026-09-14 - Afternoon - Sunny
54°F 12°C
Sunny
Early-Evening
Big Sky Weather - 2026-09-14 - Evening - Sunny
45°F 8°C
Sunny
Crisp with a high near 54°F 12°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds swinging from the SSW to the NNW at 6 mph 10 km/h.

Tuesday, September 15, 2026

Mid-Morning
Big Sky Weather - 2026-09-15 - Morning - Sunny
41°F 5°C
Sunny
Mid-Afternoon
Big Sky Weather - 2026-09-15 - Afternoon - Sunny
61°F 16°C
Sunny
Early-Evening
Big Sky Weather - 2026-09-15 - Evening - Sunny
50°F 11°C
Sunny
Refreshing around 61°F 16°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds shifting from the NE to the S at 6 mph 10 km/h.

Wednesday, September 16, 2026

Mid-Morning
Big Sky Weather - 2026-09-16 - Morning - Overcast
39°F 4°C
Overcast
Mid-Afternoon
Big Sky Weather - 2026-09-16 - Afternoon - Sunny
61°F 16°C
Sunny
Early-Evening
Big Sky Weather - 2026-09-16 - Evening - Sunny
49°F 9°C
Sunny
Mildly cool near 61°F 16°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure.

Thursday, September 17, 2026

Mid-Morning
Big Sky Weather - 2026-09-17 - Morning - Sunny
50°F 10°C
Sunny
Mid-Afternoon
Big Sky Weather - 2026-09-17 - Afternoon - Sunny
69°F 21°C
Sunny
Early-Evening
Big Sky Weather - 2026-09-17 - Evening - Sunny
57°F 14°C
Sunny
Comfortable with temperatures reaching 69°F 21°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the S to the WNW at 6 mph 9 km/h.

Friday, September 18, 2026

Mid-Morning
Big Sky Weather - 2026-09-18 - Morning - Sunny
55°F 13°C
Sunny
Mid-Afternoon
Big Sky Weather - 2026-09-18 - Afternoon - Sunny
71°F 22°C
Sunny
Early-Evening
Big Sky Weather - 2026-09-18 - Evening - Sunny
60°F 15°C
Sunny
Enjoyable around 71°F 22°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling.

Saturday, September 19, 2026

Mid-Morning
Big Sky Weather - 2026-09-19 - Morning - Sunny
59°F 15°C
Sunny
Mid-Afternoon
Big Sky Weather - 2026-09-19 - Afternoon - Overcast
77°F 25°C
Overcast
Early-Evening
Big Sky Weather - 2026-09-19 - Evening - Overcast
64°F 18°C
Overcast
Mild temperatures up to 77°F 25°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling.

Sunday, September 20, 2026

Mid-Morning
Big Sky Weather - 2026-09-20 - Morning - Drizzle
54°F 12°C
Drizzle
Mid-Afternoon
Big Sky Weather - 2026-09-20 - Afternoon - Light Showers
60°F 15°C
Light Showers
Early-Evening
Big Sky Weather - 2026-09-20 - Evening - Scattered Showers
53°F 12°C
Scattered Showers
Mildly cool near 60°F 15°C, periods of heavy rain and gusty conditions, with increasing humidity and barometric pressure falling.

Monday, September 21, 2026

Mid-Morning
Big Sky Weather - 2026-09-21 - Morning - Partly Cloudy
49°F 9°C
Partly Cloudy
Mid-Afternoon
Big Sky Weather - 2026-09-21 - Afternoon - Sunny
61°F 16°C
Sunny
Early-Evening
Big Sky Weather - 2026-09-21 - Evening - Sunny
52°F 11°C
Sunny
Comfortable at 61°F 16°C, partly cloudy in the morning, sunny in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds switching from the W to the WNW at 7 mph 12 km/h.

Tuesday, September 22, 2026

Mid-Morning
Big Sky Weather - 2026-09-22 - Morning - Heavy Snow Showers
37°F 3°C
Heavy Snow Showers
Mid-Afternoon
Big Sky Weather - 2026-09-22 - Afternoon - Light Showers
43°F 6°C
Light Showers
Early-Evening
Big Sky Weather - 2026-09-22 - Evening - Nearby Thunderstorms
37°F 3°C
Nearby Thunderstorms
Cold with a high near 43°F 6°C, blowing snow reducing visibility at times, with steady humidity and steady pressure. Snow accumulation up to 2 in. up to 5 cm.

Wednesday, September 23, 2026

Mid-Morning
Big Sky Weather - 2026-09-23 - Morning - Heavy Snow Showers
28°F -2°C
Heavy Snow Showers
Mid-Afternoon
Big Sky Weather - 2026-09-23 - Afternoon - Heavy Snow Showers
32°F 0°C
Heavy Snow Showers
Early-Evening
Big Sky Weather - 2026-09-23 - Evening - Heavy Snow Showers
26°F -4°C
Heavy Snow Showers
Nippy around 32°F 0°C, rounds of snow expected off and on all day, with steady humidity and steady pressure. New snow accumulation of 4 to 7 in. 10 to 18 cm.

Thursday, September 24, 2026

Mid-Morning
Big Sky Weather - 2026-09-24 - Morning - Heavy Snow Showers
21°F -6°C
Heavy Snow Showers
Mid-Afternoon
Big Sky Weather - 2026-09-24 - Afternoon - Heavy Snow Showers
26°F -3°C
Heavy Snow Showers
Early-Evening
Big Sky Weather - 2026-09-24 - Evening - Heavy Snow Showers
25°F -4°C
Heavy Snow Showers
Freezing temperatures near 26°F -3°C, persistent snow off and on through the day, with steady humidity and steady pressure. New snow accumulation of 6 to 9 in. 15 to 23 cm.

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Weather by the Numbers

Fri, 11th
Big Sky MT Weather - Friday, Sep 11, 2026 - Partly Cloudy
Hi: 64°F 18°C
Lo: 39°F 4°C
Sunrise 06:59 AM
Sunset 07:44 PM
Wind W 9 mph14 km/h
Dew Point 28°F-2°C
uv Index 5
Barometric Pressure 29.8 in1009 mb
POP 5% *
Humidity 30%
Sat, 12th
Big Sky MT Weather - Saturday, Sep 12, 2026 - Partly Cloudy
Hi: 66°F 19°C
Lo: 36°F 2°C
Sunrise 07:00 AM
Sunset 07:42 PM
Wind SW 6 mph9 km/h
Dew Point 27°F-3°C
uv Index 5
Barometric Pressure 29.8 in1009 mb
POP 2% *
Humidity 25%
Sun, 13th
Big Sky MT Weather - Sunday, Sep 13, 2026 - Patchy Rain Nearby
Hi: 55°F 13°C
Lo: 33°F 0°C
Sunrise 07:02 AM
Sunset 07:40 PM
Wind SSW 15 mph24 km/h
Dew Point 29°F-1°C
uv Index 5
Barometric Pressure 29.77 in1008 mb
POP 11% *
Humidity 41%
Mon, 14th
Big Sky MT Weather - Monday, Sep 14, 2026 - Sunny
Hi: 55°F 13°C
Lo: 28°F -2°C
Sunrise 07:03 AM
Sunset 07:38 PM
Wind WSW 8 mph13 km/h
Dew Point 21°F-6°C
uv Index 5
Barometric Pressure 29.91 in1013 mb
POP 1% *
Humidity 33%
Tue, 15th
Big Sky MT Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 61°F 16°C
Lo: 30°F -1°C
Sunrise 07:04 AM
Sunset 07:36 PM
Wind SSW 8 mph13 km/h
Dew Point 17°F-8°C
uv Index 4
Barometric Pressure 29.91 in1013 mb
POP 0% *
Humidity 21%
Wed, 16th
Big Sky MT Weather - Wednesday, Sep 16, 2026 - Overcast
Hi: 61°F 16°C
Lo: 32°F 0°C
Sunrise 07:05 AM
Sunset 07:34 PM
Wind SSW 1 mph1 km/h
Dew Point 26°F-3°C
uv Index 3
Barometric Pressure 30.18 in1022 mb
POP 9% *
Humidity 29%
Thu, 17th
Big Sky MT Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 69°F 21°C
Lo: 37°F 3°C
Sunrise 07:06 AM
Sunset 07:32 PM
Wind SW 6 mph10 km/h
Dew Point 15°F-9°C
uv Index 5
Barometric Pressure 30.18 in1022 mb
POP 0% *
Humidity 14%
Fri, 18th
Big Sky MT Weather - Friday, Sep 18, 2026 - Sunny
Hi: 71°F 22°C
Lo: 42°F 6°C
Sunrise 07:08 AM
Sunset 07:30 PM
Wind W 3 mph4 km/h
Dew Point 13°F-11°C
uv Index 6
Barometric Pressure 30.21 in1023 mb
POP 0% *
Humidity 11%
Sat, 19th
Big Sky MT Weather - Saturday, Sep 19, 2026 - Sunny
Hi: 77°F 25°C
Lo: 48°F 9°C
Sunrise 07:09 AM
Sunset 07:28 PM
Wind SSW 3 mph5 km/h
Dew Point 23°F-5°C
uv Index 6
Barometric Pressure 30 in1016 mb
POP 0% *
Humidity 15%
Sun, 20th
Big Sky MT Weather - Sunday, Sep 20, 2026 - Moderate Rain
Hi: 60°F 15°C
Lo: 47°F 9°C
Sunrise 07:10 AM
Sunset 07:26 PM
Wind SSE 6 mph10 km/h
Dew Point 46°F8°C
uv Index 2
Barometric Pressure 29.91 in1013 mb
POP 85% *
Humidity 90%
Mon, 21st
Big Sky MT Weather - Monday, Sep 21, 2026 - Sunny
Hi: 61°F 16°C
Lo: 44°F 7°C
Sunrise 07:11 AM
Sunset 07:25 PM
Wind W 7 mph11 km/h
Dew Point 35°F1°C
uv Index 4
Barometric Pressure 29.77 in1008 mb
POP 1% *
Humidity 40%
Tue, 22nd
Big Sky MT Weather - Tuesday, Sep 22, 2026 - Moderate Or Heavy Snow Showers
Hi: 43°F 6°C
Lo: 33°F 1°C
Sunrise 07:13 AM
Sunset 07:23 PM
Wind WNW 5 mph8 km/h
Dew Point 35°F2°C
uv Index 1
Barometric Pressure 29.88 in1012 mb
POP 70% *
Humidity 87%
Wed, 23rd
Big Sky MT Weather - Wednesday, Sep 23, 2026 - Moderate Or Heavy Snow Showers
Hi: 33°F 0°C
Lo: 22°F -6°C
Sunrise 07:14 AM
Sunset 07:21 PM
Wind E 4 mph6 km/h
Dew Point 30°F-1°C
uv Index 1
Barometric Pressure 29.94 in1014 mb
POP 75% *
Humidity 94%
Thu, 24th
Big Sky MT Weather - Thursday, Sep 24, 2026 - Moderate Or Heavy Snow Showers
Hi: 26°F -3°C
Lo: 20°F -7°C
Sunrise 07:15 AM
Sunset 07:19 PM
Wind ENE 3 mph5 km/h
Dew Point 23°F-5°C
uv Index 1
Barometric Pressure 30.15 in1021 mb
POP 81% *
Humidity 95%
* POP = Probability of Precipitation. Data for 12:00 PM.