National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Extreme Rainfall Continues for Parts of East Texas and Southwest Louisiana

An additional 6 to 12 inches of rainfall is possible across portions of East Texas and Southwest Louisiana through tonight as the remnants of Imelda move slowly across the region. Numerous flash flood warnings and emergencies remain in effect. Elsewhere, critical fire weather conditions persist over parts of the Great Basin while temperatures remain well above normal in the Plains and Midwest. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NP (YLAW4)

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

NA

47°F

8°C

Humidity 50%
Wind Speed NE 2 G 4 MPH
Barometer NA
Dewpoint 29°F (-2°C)
Visibility NA
Last update 19 Sep 9:15 am MDT
Extended Forecast for

17 Miles SE Big Sky MT

  • Today

    Today: Scattered showers, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 57. Light and variable wind becoming south 6 to 11 mph in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 40%.

    Scattered
    Showers

    High: 57 °F

  • Tonight

    Tonight: Periods of showers, mainly after 11pm. Low around 38. West southwest wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Showers

    Low: 38 °F

  • Friday

    Friday: Showers and possibly a thunderstorm. Snow level 9400 feet lowering to 8600 feet. High near 42. Light and variable wind becoming west 5 to 8 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Showers

    High: 42 °F

  • Friday
    Night

    Friday Night: Rain showers before midnight, then rain and snow showers likely. Some thunder is also possible. Snow level 8900 feet lowering to 8200 feet after midnight . Low around 34. West wind 6 to 9 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Showers then
    Rain/Snow
    Likely

    Low: 34 °F

  • Saturday

    Saturday: A chance of rain and snow showers before 10am, then a chance of rain showers. Some thunder is also possible. Snow level 8100 feet rising to 9200 feet in the afternoon. Mostly cloudy, with a high near 45. West wind 6 to 10 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Chance
    Rain/Snow
    then Chance
    T-storms

    High: 45 °F

  • Saturday
    Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 35. South wind 7 to 10 mph.

    Slight Chance
    T-storms then
    Partly Cloudy

    Low: 35 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 52. South southwest wind 8 to 14 mph, with gusts as high as 21 mph.

    Mostly Sunny

    High: 52 °F

  • Sunday
    Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 36.

    Partly Cloudy
    then Slight
    Chance
    T-storms

    Low: 36 °F

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 53.

    Chance
    T-storms

    High: 53 °F

Detailed Forecast

Today
Scattered showers, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 57. Light and variable wind becoming south 6 to 11 mph in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 40%.
Tonight
Periods of showers, mainly after 11pm. Low around 38. West southwest wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers and possibly a thunderstorm. Snow level 9400 feet lowering to 8600 feet. High near 42. Light and variable wind becoming west 5 to 8 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Rain showers before midnight, then rain and snow showers likely. Some thunder is also possible. Snow level 8900 feet lowering to 8200 feet after midnight . Low around 34. West wind 6 to 9 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Saturday
A chance of rain and snow showers before 10am, then a chance of rain showers. Some thunder is also possible. Snow level 8100 feet rising to 9200 feet in the afternoon. Mostly cloudy, with a high near 45. West wind 6 to 10 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Saturday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 35. South wind 7 to 10 mph.
Sunday
Mostly sunny, with a high near 52. South southwest wind 8 to 14 mph, with gusts as high as 21 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 36.
Monday
A 30 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 53.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 57.
Tuesday Night
Partly cloudy, with a low around 36.
Wednesday
Mostly sunny, with a high near 58.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
17 Miles SE Big Sky MT
 45.08°N 111.1°W (Elev. 7615 ft)
Last Update:
9:28 am MDT Sep 19, 2019
Forecast Valid:
11am MDT Sep 19, 2019-6pm MDT Sep 25, 2019
 
Forecast Discussion
 
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Additional Resources

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Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation