Cold Front to Bring Cooling and Heavy Rain in the East; Building Heat and Monsoon in the West

A slow moving cold front will bring temperatures back to near normal early this week in the East. Strong to severe storms ahead of the front may produce damaging winds and heavy rain that could cause flash flooding. Strengthening high pressure in the West will produce surging monsoon moisture with potential for flash flooding. Heat may become excessive in the Desert Southwest this week. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

En Español

Current conditions at

MAMMOTH AT YELLOWSTONE NP (YLAW4)

Lat: 44.97722°NLon: 110.69528°WElev: 6127ft.

75°F

24°C

Humidity	42%
Wind Speed	NNE 3 G 6 MPH
Barometer	NA
Dewpoint	50°F (10°C)
Visibility	NA
Last update	22 Jul 11:15 am MDT

More Information:

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

Extended Forecast for

17 Miles SE Big Sky MT

This
Afternoon

Isolated
T-storms
High: 78 °F
Tonight

Scattered
Showers then
Partly Cloudy
Low: 53 °F
Tuesday

Sunny then
Scattered
Showers
High: 80 °F
Tuesday
Night

Isolated
T-storms then
Partly Cloudy
Low: 54 °F
Wednesday

Mostly Sunny
then
Scattered
Showers and
Breezy
High: 77 °F
Wednesday
Night

Mostly Clear
Low: 47 °F
Thursday

Sunny
High: 74 °F
Thursday
Night

Mostly Clear
Low: 46 °F
Friday

Sunny then
Slight Chance
T-storms
High: 75 °F

Detailed Forecast

This Afternoon

Isolated showers and thunderstorms after 3pm. Mostly sunny, with a high near 78. South wind around 6 mph becoming west northwest. Chance of precipitation is 20%.

Tonight

Scattered showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 53. Northwest wind around 6 mph becoming southeast after midnight. Chance of precipitation is 30%.

Tuesday

Scattered showers and thunderstorms after noon. Increasing clouds, with a high near 80. Southeast wind 5 to 9 mph becoming southwest in the afternoon. Chance of precipitation is 30%.

Tuesday Night

Isolated showers and thunderstorms before midnight. Mostly cloudy, with a low around 54. Southwest wind 5 to 9 mph becoming light and variable. Chance of precipitation is 20%.

Wednesday

Scattered showers and thunderstorms after noon. Mostly sunny, with a high near 77. Breezy, with a south wind 7 to 15 mph becoming west in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 30%.

Wednesday Night

Mostly clear, with a low around 47. West wind 8 to 13 mph becoming light and variable.

Thursday

Sunny, with a high near 74. South wind 5 to 13 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

Thursday Night

Mostly clear, with a low around 46.

Friday

A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 75.

Friday Night

A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 50.

Saturday

A chance of showers and thunderstorms. Mostly sunny, with a high near 72.