Thunderstorms and Heavy Rains Across Portions of the Central and Eastern US; Heat Expands to Portions of the East

Widespread showers and thunderstorms, some severe, may produce heavy downpours and flash flooding across much of the eastern and central U.S. Dangerous heat will continue in the Pacific Northwest and expand across portions of the East. Deep tropical moisture and associated thunderstorms will bring heavy rainfall and localized flash flooding across portions of Florida into the central Gulf Coast. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

MAMMOTH AT YELLOWSTONE NP (YLAW4)

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

51°F

11°C

Humidity	83%
Wind Speed	N 7 MPH
Barometer	NA
Dewpoint	46°F (8°C)
Visibility	NA
Last update	15 Jul 11:15 PM MDT

More Information:

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

Extended Forecast for

Mammoth WY

Overnight
Low: 46 °F
Chance
Showers
Wednesday
High: 75 °F
Slight Chance
Showers then
Slight Chance
T-storms
Wednesday Night
Low: 49 °F
Mostly Clear
Thursday
High: 86 °F
Sunny
Thursday Night
Low: 51 °F
Mostly Clear
Friday
High: 86 °F
Sunny then
Slight Chance
T-storms
Friday Night
Low: 52 °F
Partly Cloudy
Saturday
High: 87 °F
Sunny then
Slight Chance
T-storms
Saturday Night
Low: 52 °F
Partly Cloudy

Detailed Forecast

Overnight

A 40 percent chance of showers and thunderstorms, mainly before 5am. Mostly cloudy, with a low around 46. Northwest wind around 8 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday

A slight chance of showers before 3pm, then a slight chance of showers and thunderstorms between 3pm and 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 75. North northwest wind 5 to 7 mph. Chance of precipitation is 20%.

Wednesday Night

Mostly clear, with a low around 49. Northwest wind 5 to 7 mph becoming south southeast in the evening.

Thursday

Sunny, with a high near 86. South southeast wind 6 to 13 mph becoming west in the afternoon. Winds could gust as high as 24 mph.

Thursday Night

Mostly clear, with a low around 51. West wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.

Friday

A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86. Light and variable wind becoming west 5 to 9 mph in the morning.

Friday Night

Partly cloudy, with a low around 52. West wind around 7 mph becoming south southeast after midnight.

Saturday

A 10 percent chance of showers and thunderstorms after noon. Sunny, with a high near 87.

Saturday Night

Partly cloudy, with a low around 52.

Sunday

A 10 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86.

Sunday Night

Partly cloudy, with a low around 51.

Monday

A slight chance of showers and thunderstorms. Sunny, with a high near 83.