Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast across parts of the Upper Midwest into the Great Lakes, the Northeast, and the central High Plains. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

43°F

6°C

Humidity	76%
Wind Speed	S 9 MPH
Barometer	NA
Dewpoint	36°F (2°C)
Visibility	NA
Wind Chill	38°F (3°C)
Last update	01 Jul 07:15 AM MDT

More Information:

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

Extended Forecast for

17 Miles SE Big Sky MT

Today
High: 66 °F
Sunny then
Slight Chance
T-storms
Tonight
Low: 41 °F
Chance
T-storms then
Partly Cloudy
Thursday
High: 67 °F
Sunny then
Slight Chance
T-storms
Thursday Night
Low: 43 °F
Slight Chance
T-storms then
Mostly Clear
Friday
High: 69 °F
Mostly Sunny
then Chance
T-storms
Friday Night
Low: 43 °F
Chance
Showers then
Mostly Clear
Independence Day
High: 73 °F
Sunny
Saturday Night
Low: 46 °F
Mostly Clear
Sunday
High: 77 °F
Sunny then
Slight Chance
T-storms

Detailed Forecast

Today

A 20 percent chance of showers and thunderstorms after 1pm. Increasing clouds, with a high near 66. Light south southeast wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 20 mph.

Tonight

A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 41. South southwest wind 6 to 11 mph becoming light and variable after midnight.

Thursday

A 10 percent chance of showers and thunderstorms after 3pm. Sunny, then becoming partly sunny during the afternoon, with a high near 67. Light and variable wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 20 mph.

Thursday Night

A 10 percent chance of showers and thunderstorms before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 43. West southwest wind 5 to 10 mph becoming light south after midnight. Winds could gust as high as 22 mph.

Friday

A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 69. Light and variable wind becoming west southwest 6 to 11 mph in the morning. Winds could gust as high as 23 mph.

Friday Night

A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 43. West southwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 20 mph.

Independence Day

Sunny, with a high near 73. Light south wind becoming west southwest 6 to 11 mph in the morning. Winds could gust as high as 23 mph.

Saturday Night

Mostly clear, with a low around 46.

Sunday

A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 77.

Sunday Night

Partly cloudy, with a low around 50.

Monday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 78.

Monday Night

A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 51.