Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

53°F

12°C

Humidity	67%
Wind Speed	SSW 5 MPH
Barometer	NA
Dewpoint	42°F (6°C)
Visibility	NA
Last update	27 Aug 05:15 AM MDT

More Information:

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

Extended Forecast for

Mammoth WY

Today
High: 85 °F
Mostly Sunny
then Slight
Chance
T-storms
Tonight
Low: 53 °F
Showers
Likely then
Slight Chance
Showers
Friday
High: 75 °F
Showers
Likely
Friday Night
Low: 52 °F
Chance
Showers then
Showers
Saturday
High: 69 °F
Showers
Saturday Night
Low: 48 °F
Showers
Sunday
High: 69 °F
Showers
Likely then
Chance
T-storms and
Breezy
Sunday Night
Low: 42 °F
Mostly Clear
Monday
High: 72 °F
Sunny

Detailed Forecast

Today

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Light and variable wind becoming southwest 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.

Tonight

Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 1am. Mostly cloudy, with a low around 53. West wind 6 to 8 mph becoming south southeast after midnight. Chance of precipitation is 60%.

Friday

Showers and thunderstorms likely, mainly before 3pm. Mostly cloudy, with a high near 75. South southeast wind 5 to 9 mph becoming southwest in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night

A chance of showers and thunderstorms, then showers after midnight. Low around 52. South wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday

Showers, with thunderstorms also possible after 9am. High near 69. South wind 7 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night

Showers and possibly a thunderstorm. Low around 48. South wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

Sunday

Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 69. Breezy, with a southwest wind 9 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.

Sunday Night

Mostly clear, with a low around 42.

Monday

Sunny, with a high near 72.

Monday Night

A chance of showers and thunderstorms before midnight, then a slight chance of showers. Partly cloudy, with a low around 45. Chance of precipitation is 30%.

Tuesday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 74.

Tuesday Night

A slight chance of showers. Partly cloudy, with a low around 46.

Wednesday

A slight chance of showers and thunderstorms. Sunny, with a high near 72.