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 from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. 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.

47°F

8°C

Humidity	73%
Wind Speed	SSW 4 MPH
Barometer	NA
Dewpoint	39°F (4°C)
Visibility	NA
Wind Chill	45°F (7°C)
Last update	01 Jul 03:15 AM MDT

More Information:

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

Extended Forecast for

9 Miles W Mammoth Hot Springs WY

Today
High: 55 °F
Sunny and
Breezy
Tonight
Low: 37 °F
Slight Chance
T-storms and
Breezy then
Partly Cloudy
Thursday
High: 57 °F
Sunny and
Breezy
Thursday Night
Low: 39 °F
Partly Cloudy
and Breezy
then Mostly
Clear
Friday
High: 58 °F
Breezy.
Mostly Sunny
then Slight
Chance
T-storms
Friday Night
Low: 39 °F
Slight Chance
T-storms and
Breezy then
Mostly Clear
Independence Day
High: 62 °F
Sunny then
Sunny and
Breezy
Saturday Night
Low: 42 °F
Mostly Clear
Sunday
High: 66 °F
Sunny

Detailed Forecast

Today

Sunny, with a high near 55. Breezy, with a southwest wind 10 to 18 mph, with gusts as high as 28 mph.

Tonight

A 20 percent chance of showers and thunderstorms before 10pm. Mostly clear during the early evening, then becoming mostly cloudy, with a low around 37. Breezy, with a south southwest wind 9 to 17 mph, with gusts as high as 26 mph.

Thursday

Sunny, with a high near 57. Breezy, with a southwest wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph.

Thursday Night

Partly cloudy, with a low around 39. Breezy, with a south wind 8 to 17 mph, with gusts as high as 31 mph.

Friday

A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 58. Breezy, with a south wind 11 to 18 mph becoming west in the afternoon. Winds could gust as high as 30 mph.

Friday Night

A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 39. Breezy, with a west wind 6 to 15 mph becoming south in the evening. Winds could gust as high as 28 mph.

Independence Day

Sunny, with a high near 62. Breezy, with a southwest wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 30 mph.

Saturday Night

Mostly clear, with a low around 42.

Sunday

Sunny, with a high near 66.

Sunday Night

Partly cloudy, with a low around 46.

Monday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 68.

Monday Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 47.

Tuesday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 66.