Big Sky, MT Weather Forecast

Local 7-day forecast

77°

Mostly Sunny then Chance Showers And Thunderstorms

Track current conditions, temperature changes, wind, and the full daily outlook for Big Sky, MT in one place.

Tuesday, July 14, 2026

Wind: 1 to 6 mph NNE

Tuesday

A chance of showers and thunderstorms between noon and 3pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 77. North northeast wind 1 to 6 mph. Chance of precipitation is 30%.

Local 7-day forecast

Local Weather Overview

This forecast page for Big Sky, MT is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 12, 2026 1:44 AM MDT.

The active forecast window currently covers Jul 14 to Jul 18, 2026 for Big Sky, MT.

Page Snapshot

Page focus: city weather
Forecast window: Jul 14 to Jul 18, 2026
Latest sync: Jul 12, 2026 1:44 AM MDT
Forecast office: TFX
Source: NOAA / NWS

Next High

77°F

Tuesday

Next Low

56°F

Tuesday Night

Rain Outlook

Periods mentioning precipitation

Windiest

2 to 7 mph

Thursday Night

Daily Outlook

Today

Jul 14

Mostly Sunny then Chance Showers And Thunderstorms

77 °F

/ 56°F

Wind 1 to 6 mph

Wed

Jul 15

Partly Sunny then Showers And Thunderstorms

74 °F

/ 54°F

Wind 1 to 6 mph

Thu

Jul 16

Mostly Sunny then Chance Showers And Thunderstorms

75 °F

/ 54°F

Wind 1 to 6 mph

Fri

Jul 17

Mostly Sunny then Chance Showers And Thunderstorms

76 °F

/ 54°F

Wind 2 to 7 mph

Sat

Jul 18

Mostly Sunny then Slight Chance Showers And Thunderstorms

75 °F

Wind 1 to 7 mph

This Week in Big Sky

Tuesday looks like the warmest upcoming period in Big Sky at 77 degrees F.

Wednesday Night is the coolest period ahead with temperatures near 54 degrees F.

The strongest winds are forecast for Thursday Night at about 2 to 7 mph SSE.

Precipitation is mentioned in 9 upcoming forecast periods.

Forecast Details

Last updated: Jul 12, 2026 1:44 AM MDT
Coverage: 5 days
Time zone: America/Denver
Forecast office: TFX
Radar station: KBLX

Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.

Open NOAA source

Extended Forecast

Tuesday Night

Jul 14

56°F

Chance Showers And Thunderstorms then Mostly Cloudy

1 to 6 mph NNE

A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms between 9pm and midnight. Mostly cloudy, with a low around 56. North northeast wind 1 to 6 mph.

Wednesday

Jul 15

74°F

Partly Sunny then Showers And Thunderstorms

1 to 6 mph WSW

Showers and thunderstorms after noon. Partly sunny, with a high near 74. West southwest wind 1 to 6 mph.

Wednesday Night

Jul 15

54°F

Showers And Thunderstorms Likely then Mostly Cloudy

5 mph SSE

Showers and thunderstorms likely before midnight. Mostly cloudy, with a low around 54.

Thursday

Jul 16

75°F

Mostly Sunny then Chance Showers And Thunderstorms

1 to 6 mph SW

A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75.

Thursday Night

Jul 16

54°F

Chance Showers And Thunderstorms then Partly Cloudy

2 to 7 mph SSE

A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 54.

Friday

Jul 17

76°F

Mostly Sunny then Chance Showers And Thunderstorms

2 to 7 mph WSW

A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 76.

Friday Night

Jul 17

54°F

Chance Showers And Thunderstorms then Partly Cloudy

2 to 7 mph W

A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 54.

Saturday

Jul 18

75°F

Mostly Sunny then Slight Chance Showers And Thunderstorms

1 to 7 mph WSW

A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75.

Detailed Forecast

Period	Conditions	Temp	Wind	Details
Tuesday Jul 14	Mostly Sunny then Chance Showers And Thunderstorms	77°F	1 to 6 mph NNE	A chance of showers and thunderstorms between noon and 3pm, then a chance of showers and thunderstorms. Mostly sunny, wi...
Tuesday Night Jul 14	Chance Showers And Thunderstorms then Mostly Cloudy	56°F	1 to 6 mph NNE	A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms between 9pm and midnight. M...
Wednesday Jul 15	Partly Sunny then Showers And Thunderstorms	74°F	1 to 6 mph WSW	Showers and thunderstorms after noon. Partly sunny, with a high near 74. West southwest wind 1 to 6 mph.
Wednesday Night Jul 15	Showers And Thunderstorms Likely then Mostly Cloudy	54°F	5 mph SSE	Showers and thunderstorms likely before midnight. Mostly cloudy, with a low around 54.
Thursday Jul 16	Mostly Sunny then Chance Showers And Thunderstorms	75°F	1 to 6 mph SW	A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75.
Thursday Night Jul 16	Chance Showers And Thunderstorms then Partly Cloudy	54°F	2 to 7 mph SSE	A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 54.
Friday Jul 17	Mostly Sunny then Chance Showers And Thunderstorms	76°F	2 to 7 mph WSW	A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 76.
Friday Night Jul 17	Chance Showers And Thunderstorms then Partly Cloudy	54°F	2 to 7 mph W	A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 54.
Saturday Jul 18	Mostly Sunny then Slight Chance Showers And Thunderstorms	75°F	1 to 7 mph WSW	A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75.

Nearby Forecasts

Explore weather pages for nearby cities and major places around Big Sky.

Region Links

Gallatin County weather

County forecast page

Montana weather

Statewide weather overview

United States weather

National weather entry point

Weather data provided by the National Weather Service (NOAA). Forecast pages update automatically as new periods are synced for each supported U.S. location.