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.

68°F

20°C

Humidity	37%
Wind Speed	WSW 1 MPH
Barometer	NA
Dewpoint	40°F (4°C)
Visibility	NA
Last update	01 Jul 11:15 AM MDT

More Information:

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

Extended Forecast for

5 Miles E Mammoth WY

Today
High: 68 °F
Isolated
T-storms
Tonight
Low: 41 °F
Isolated
T-storms then
Partly Cloudy
Thursday
High: 69 °F
Mostly Sunny
Thursday Night
Low: 42 °F
Slight Chance
T-storms then
Mostly Clear
Friday
High: 70 °F
Mostly Sunny
then Slight
Chance
T-storms
Friday Night
Low: 43 °F
Slight Chance
T-storms then
Mostly Clear
Independence Day
High: 74 °F
Sunny
Saturday Night
Low: 45 °F
Mostly Clear
Sunday
High: 78 °F
Sunny

Detailed Forecast

Today

Isolated showers and thunderstorms after 2pm. Increasing clouds, with a high near 68. Southwest wind 9 to 14 mph. Chance of precipitation is 20%.

Tonight

Isolated showers and thunderstorms before midnight. Mostly cloudy, with a low around 41. Southwest wind 5 to 14 mph becoming southeast after midnight. Chance of precipitation is 20%.

Thursday

Mostly sunny, with a high near 69. South southeast wind 5 to 14 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph.

Thursday Night

A 10 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 42. West southwest wind 6 to 11 mph becoming light and variable. Winds could gust as high as 25 mph.

Friday

A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 70. Southeast wind 5 to 11 mph becoming west in the afternoon. Winds could gust as high as 24 mph.

Friday Night

A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 43. West wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 20%.

Independence Day

Sunny, with a high near 74. Light and variable wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 22 mph.

Saturday Night

Mostly clear, with a low around 45.

Sunday

Sunny, with a high near 78.

Sunday Night

Partly cloudy, with a low around 49.

Monday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 79.

Monday Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 50.