Dangerous Heat Builds and Expands; Critical Fire Weather for the Southwest; Severe Thunderstorms for Plains and Midwest

Dangerous to record breaking heat will build across the center of the nation and slowly build eastward this week. Wildfire conditions remain critical for the Southwest and portions of the Great Basin through Monday. For the northern Plains and upper Midwest, severe thunderstorms with the potential for large to very large hail and severe winds are the primary hazards. 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	73%
Wind Speed	SSE 4 MPH
Barometer	NA
Dewpoint	35°F (2°C)
Visibility	NA
Wind Chill	41°F (5°C)
Last update	28 Jun 11:15 PM MDT

More Information:

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

Extended Forecast for

2 Miles SSW Mammoth Hot Springs WY

Tonight
Low: 32 °F
Rain/Snow and
Breezy
Monday
High: 44 °F
Rain/Snow and
Windy
Monday Night
Low: 37 °F
Chance
Showers then
Mostly Cloudy
Tuesday
High: 60 °F
Mostly Sunny
then Slight
Chance
T-storms
Tuesday Night
Low: 37 °F
Partly Cloudy
Wednesday
High: 63 °F
Sunny then
Chance
T-storms
Wednesday Night
Low: 38 °F
Slight Chance
T-storms then
Partly Cloudy
Thursday
High: 65 °F
Sunny then
Mostly Sunny
and Breezy
Thursday Night
Low: 41 °F
Partly Cloudy

Detailed Forecast

Tonight

Rain showers likely between 2am and 4am, then rain and snow showers. Snow level 8300 feet lowering to 7700 feet after midnight . Low around 32. Breezy, with a south wind 10 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Monday

Rain, possibly mixed with snow showers, becoming all rain after 2pm. Some thunder is also possible. Snow level 7500 feet rising to 9800 feet in the afternoon. High near 44. Windy, with a south southwest wind 23 to 28 mph decreasing to 17 to 22 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Monday Night

A 40 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 37. Southwest wind 8 to 14 mph becoming south southeast after midnight. Winds could gust as high as 29 mph.

Tuesday

A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 60. Southwest wind 6 to 9 mph, with gusts as high as 20 mph.

Tuesday Night

Partly cloudy, with a low around 37. South wind 5 to 8 mph, with gusts as high as 22 mph.

Wednesday

A 30 percent chance of showers and thunderstorms after noon. Sunny, with a high near 63. Light south wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 25 mph.

Wednesday Night

A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 38. Southwest wind 5 to 10 mph becoming south southeast after midnight. Winds could gust as high as 23 mph.

Thursday

Mostly sunny, with a high near 65. Breezy.

Thursday Night

Partly cloudy, with a low around 41.

Friday

A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 67.

Friday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 41.

Independence Day

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

Saturday Night

Mostly clear, with a low around 41.