Heat Wave and Severe Thunderstorms this Independence Day

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Midwest, and Mid-Atlantic. Numerous temperature records are expected. Clusters of severe thunderstorms will move across parts of the Allegheny Plateau into Mid Atlantic this Independence Day, with potential for widespread damaging winds. Additional severe thunderstorms in the Great Plains. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

Lat: 44.977222°NLon: 110.695278°WElev: 6138.0ft.

55°F

13°C

Humidity	48%
Wind Speed	SSW 6 MPH
Barometer	NA
Dewpoint	36°F (2°C)
Visibility	NA
Last update	05 Jul 03:15 AM MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

18 Miles SE Big Sky MT

Overnight
Low: 51 °F
Clear
Sunday
High: 78 °F
Sunny then
Slight Chance
T-storms and
Breezy
Sunday Night
Low: 53 °F
Mostly Cloudy
Monday
High: 74 °F
Partly Sunny
then Chance
T-storms
Monday Night
Low: 52 °F
Chance
T-storms then
Slight Chance
Showers
Tuesday
High: 73 °F
Mostly Sunny
then Chance
T-storms
Tuesday Night
Low: 52 °F
Slight Chance
T-storms then
Mostly Clear
Wednesday
High: 75 °F
Sunny then
Chance
T-storms
Wednesday Night
Low: 51 °F
Chance
T-storms then
Partly Cloudy

Detailed Forecast

Overnight

Clear, with a low around 51. Southeast wind around 6 mph.

Sunday

A 20 percent chance of showers and thunderstorms after 3pm. Increasing clouds, with a high near 78. Breezy, with a southeast wind 5 to 15 mph becoming west southwest in the morning. Winds could gust as high as 23 mph.

Sunday Night

Mostly cloudy, with a low around 53. West southwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

Monday

A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 74. Calm wind becoming southeast 5 to 8 mph in the afternoon.

Monday Night

A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 52. South southwest wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday

A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 73. Calm wind becoming west southwest 5 to 8 mph in the morning.

Tuesday Night

A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 52. West northwest wind 5 to 7 mph becoming calm in the evening.

Wednesday

A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75.

Wednesday Night

A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 51.

Thursday

Sunny, with a high near 74.

Thursday Night

Mostly clear, with a low around 51.

Friday

Sunny, with a high near 79.

Friday Night

Mostly clear, with a low around 55.