Live Weather & Forecast

Weather in Big Sky

Montana, United States · Real-time conditions & 3-day outlook

Flag of United States
Cloudy
-0°C
Feels like -6°C
32°F / Feels 22°F
Cloudy
Big Sky, Montana
🌞 Daytime
Updated: 2026-04-15 08:30
💧
Humidity
84%
💨
Wind
13.3 km/h SSE
🌬️
Wind Gust
19.2 km/h
🌡️
Pressure
1008 mb
👁️
Visibility
10 km
☀️
UV Index
0.3 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
69%
💦
Dew Point
-3.5°C
🌐
Wind Degree
161°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
136.9 μg/m³
NO₂
1.3 μg/m³
O₃
107 μg/m³
SO₂
1 μg/m³
PM 2.5
4.7 μg/m³
PM 10
12.5 μg/m³

Weather Alerts 5

Met · Severe · Future
Winter Storm Watch issued April 14 at 1:17PM MDT until April 17 at 6:00AM MDT by NWS Great Falls MT

* WHAT...Heavy snow possible. Total snow accumulations between 5 and 10 inches at lower elevations and mountain passes, with 10 to 15 inches in the mountains. Winds could gust as high as 45 mph. * WHERE...Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...From Wednesday evening through late Thursday night. * IMPACTS...Travel could be very difficult and tire chains may be r...

Monitor the latest forecasts for updates on this situation. To see a graphical representation of the degree of stress on young livestock please visit our webpage and select Local Programs then Cold Air Advisory for Newborn Livestock.

Met · Severe · Future
Winter Storm Watch issued April 14 at 12:58PM MDT until April 17 at 6:00AM MDT by NWS Riverton WY

* WHAT...Heavy snow possible. Total snow accumulations between 9 and 18 inches are possible. Winds could gust as high as 50 mph. * WHERE...Absaroka Mountains, Teton and Gros Ventre Mountains, and Yellowstone National Park. * WHEN...From Wednesday evening through late Thursday night. * IMPACTS...Travel could be very difficult, especially across Teton Pass and Togwotee Pass. Strong winds could ca...

Monitor the latest forecasts for updates on this situation.

Met · Moderate · Expected
Winter Weather Advisory issued April 14 at 11:11PM MDT until April 16 at 12:00PM MDT by NWS Great Falls MT

* WHAT...Snow expected. Total snow accumulations between 2 and 6 inches. Winds gusting as high as 35 mph. * WHERE...Big Belt, Bridger and Castle Mountains, Little Belt and Highwood Mountains, and Southern Rocky Mountain Front. * WHEN...From 6 PM Wednesday to noon MDT Thursday. * IMPACTS...Slushy snow covered roads may make travel difficult. Falling and or blowing snow may significantly reduce v...

Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. To see a graphical representation of the degree of stress on young livestock please visit our webpage and select Local Programs then Cold Air Advisory for...

Met · Severe · Future
Winter Storm Watch issued April 14 at 11:11PM MDT until April 16 at 6:00PM MDT by NWS Great Falls MT

* WHAT...Heavy snow possible. Total snow accumulations between 2 and 7 inches possible, highest on the south and east portions of the Bozeman valley. * WHERE...Gallatin Valley. * WHEN...From late Wednesday night through Thursday afternoon. * IMPACTS...Slushy snow covered roads may make travel very difficult, especially Thursday morning. The hazardous conditions could impact the Thursday morning...

Monitor the latest forecasts for updates on this situation. To see a graphical representation of the degree of stress on young livestock please visit our webpage and select Local Programs then Cold Air Advisory for Newborn Livestock.

Met · Severe · Future
Winter Storm Watch issued April 14 at 11:11PM MDT until April 17 at 12:00AM MDT by NWS Great Falls MT

* WHAT...Heavy snow possible. Total snow accumulations between 5 and 10 inches at lower elevations and mountain passes, with 10 to 15 inches in the mountains. Winds could gust as high as 45 mph. * WHERE...Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...From Wednesday evening through Thursday evening. * IMPACTS...Travel could be very difficult and tire chains may be requ...

Monitor the latest forecasts for updates on this situation. To see a graphical representation of the degree of stress on young livestock please visit our webpage and select Local Programs then Cold Air Advisory for Newborn Livestock.

Today's Hourly Forecast

24-hour breakdown for Big Sky, Montana

12 AM
Clear
Clear
💧 75% 💨 11.9 km/h
1 AM
Clear
Clear
💧 79% 💨 11.5 km/h
2 AM
Partly Cloudy
-0°
Partly Cloudy
💧 79% 💨 11.5 km/h
3 AM
Cloudy
-0°
Cloudy
💧 78% 💨 11.5 km/h
4 AM
Overcast
-0°
Overcast
💧 75% 💨 11.2 km/h
5 AM
Overcast
-0°
Overcast
💧 74% 💨 11.2 km/h
6 AM
Overcast
-1°
Overcast
💧 81% 💨 11.9 km/h
7 AM
Partly Cloudy
-1°
Partly Cloudy
💧 86% 💨 11.9 km/h
8 AM
Cloudy
-0°
Cloudy
💧 84% 💨 13.3 km/h
9 AM
Cloudy
Cloudy
💧 72% 💨 14.4 km/h
10 AM
Overcast
Overcast
💧 81% 💨 13.7 km/h
11 AM
Cloudy
Cloudy
💧 70% 💨 15.8 km/h
12 PM
Partly Cloudy
Partly Cloudy
💧 62% 💨 15.1 km/h
1 PM
Thundery outbreaks in nearby
Thundery outbreaks in nearby
💧 63% 💨 19.1 km/h
2 PM
Thundery outbreaks in nearby
Thundery outbreaks in nearby
💧 66% 💨 20.5 km/h
3 PM
Thundery outbreaks in nearby
Thundery outbreaks in nearby
💧 67% 💨 22 km/h
4 PM
Thundery outbreaks in nearby
Thundery outbreaks in nearby
💧 67% 💨 20.2 km/h
5 PM
Thundery outbreaks in nearby
Thundery outbreaks in nearby
💧 70% 💨 19.4 km/h
6 PM
Thundery outbreaks in nearby
Thundery outbreaks in nearby
💧 83% 💨 18 km/h
7 PM
Thundery outbreaks in nearby
Thundery outbreaks in nearby
💧 76% 💨 20.5 km/h
8 PM
Thundery outbreaks in nearby
Thundery outbreaks in nearby
💧 82% 💨 19.8 km/h
9 PM
Thundery outbreaks in nearby
Thundery outbreaks in nearby
💧 85% 💨 17.3 km/h
10 PM
Thundery outbreaks in nearby
Thundery outbreaks in nearby
💧 89% 💨 10.1 km/h
11 PM
Thundery outbreaks in nearby
Thundery outbreaks in nearby
💧 98% 💨 9 km/h

3-Day Forecast

Daily overview for Big Sky, Montana

Today
Thundery outbreaks in nearby
Thundery outbreaks in nearby
/ -1°
🌧️ 0% chance of rain
💧 Avg. humidity: 77%
💨 Max wind: 22 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 0.9
🌅 Sunrise: 06:40 AM
🌇 Sunset: 08:11 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Thu, Apr 16
Moderate snow
Moderate snow
-5° / -8°
🌧️ 81% chance of rain
❄️ 78% chance of snow
💧 Avg. humidity: 88%
💨 Max wind: 11.5 km/h
🌧️ Total precip: 53.68 mm
☀️ UV Index: 0.8
🌅 Sunrise: 06:38 AM
🌇 Sunset: 08:13 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Moderate or heavy snow showers
Moderate or heavy snow showers
-2° / -9°
🌧️ 69% chance of rain
❄️ 27% chance of snow
💧 Avg. humidity: 71%
💨 Max wind: 12.2 km/h
🌧️ Total precip: 13.75 mm
☀️ UV Index: 1.3
🌅 Sunrise: 06:36 AM
🌇 Sunset: 08:14 PM
🌙 New Moon
🌑 Moon: 0% lit

Best Time to Visit Big Sky

Plan your trip to Big Sky, United States around the most favorable weather conditions.

Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
← Back to Big Sky 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Big Sky?
Current conditions in Big Sky: Cloudy, temperature -0°C, humidity 84%.
What is the best time to visit Big Sky?
The best time to visit Big Sky is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Big Sky?
Big Sky is located at approximately 45.3° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Big Sky?
The wettest period in Big Sky is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Big Sky?
For visits to Big Sky during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Big Sky in?
Big Sky is located in United States, in the state of Montana.
What are the public holidays in Big Sky in 2026?
View the 2026 public holidays for Big Sky on our Holidays page.
What are the GPS coordinates used for the weather forecast in Big Sky?
The weather forecast for Big Sky uses coordinates 45.259, -111.3087.