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September Climate Summary for Central and Western Wyoming

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

67°F

19°C

Humidity	32%
Wind Speed	SW 15 MPH
Barometer	NA
Dewpoint	36°F (2°C)
Visibility	NA
Last update	03 Oct 02:15 PM MDT

More Information:

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

Extended Forecast for

5 Miles SSW Mammoth Hot Springs WY

This Afternoon
High: 63 °F
Isolated
T-storms and
Breezy
Tonight
Low: 36 °F
Scattered
Showers
Saturday
High: 43 °F
Showers then
Rain/Snow and
Breezy
Saturday Night
Low: 28 °F
Rain/Snow
Sunday
High: 39 °F
Snow Showers
Likely
Sunday Night
Low: 20 °F
Chance Snow
Showers
Monday
High: 46 °F
Sunny
Monday Night
Low: 22 °F
Clear
Tuesday
High: 54 °F
Sunny

Detailed Forecast

This Afternoon

Isolated showers and thunderstorms after 4pm. Mostly sunny, with a high near 63. Breezy, with a south southwest wind 14 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

Tonight

Scattered showers and thunderstorms, mainly after 1am. Increasing clouds, with a low around 36. South southwest wind 8 to 13 mph becoming light and variable. Winds could gust as high as 22 mph. Chance of precipitation is 40%.

Saturday

Rain showers before 5pm, then rain and snow showers. Some thunder is also possible. Snow level 10500 feet lowering to 8100 feet in the afternoon . High near 43. Breezy, with a north wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Saturday Night

Rain and snow showers, becoming all snow after 1am. Snow level 8000 feet lowering to 7400 feet after midnight . Low around 28. North northwest wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Sunday

Snow showers likely. Some thunder is also possible. Mostly cloudy, with a high near 39. North wind around 7 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Sunday Night

A 30 percent chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 20. North wind around 6 mph becoming calm in the evening.

Monday

Sunny, with a high near 46. Calm wind.

Monday Night

Clear, with a low around 22.

Tuesday

Sunny, with a high near 54.

Tuesday Night

Clear, with a low around 27.

Wednesday

Sunny, with a high near 55.

Wednesday Night

Mostly clear, with a low around 28.