Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

Sioux Pass MT-16 MP 21 (MTSOO)

Lat: 47.91973°NLon: 104.32619°WElev: 2480.0ft.

NA

67°F

19°C

Humidity 95%
Wind Speed ESE 5 MPH
Barometer NA
Dewpoint 66°F (19°C)
Visibility NA
Last update 17 Aug 05:30 AM MDT
Extended Forecast for

16 Miles NE Lambert MT

  • Overnight

    Overnight: A 30 percent chance of showers.  Mostly cloudy, with a low around 61. East wind around 9 mph.

    Low: 61 °F

    Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers, mainly between 3pm and 5pm.  Mostly sunny, with a high near 86. East southeast wind 6 to 9 mph becoming south in the morning.

    High: 86 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 3am.  Increasing clouds, with a low around 62. East northeast wind around 6 mph becoming light and variable  after midnight.  Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Monday

    Monday: A slight chance of showers, with thunderstorms also possible after noon.  Partly sunny, with a high near 87. Light and variable wind becoming south southeast 5 to 7 mph in the morning.  Chance of precipitation is 20%.

    High: 87 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 62. East southeast wind around 7 mph.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. Southeast wind 5 to 7 mph.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66. Southeast wind around 9 mph.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 99. South southeast wind 8 to 13 mph, with gusts as high as 21 mph.

    High: 99 °F

    Hot

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after midnight.  Partly cloudy, with a low around 64. South wind 7 to 10 mph becoming west after midnight. Winds could gust as high as 18 mph.

    Low: 64 °F

    Mostly Clear
    then Slight
    Chance
    Showers

Detailed Forecast

Overnight
A 30 percent chance of showers. Mostly cloudy, with a low around 61. East wind around 9 mph.
Sunday
A 30 percent chance of showers, mainly between 3pm and 5pm. Mostly sunny, with a high near 86. East southeast wind 6 to 9 mph becoming south in the morning.
Sunday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 3am. Increasing clouds, with a low around 62. East northeast wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 30%.
Monday
A slight chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 87. Light and variable wind becoming south southeast 5 to 7 mph in the morning. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 62. East southeast wind around 7 mph.
Tuesday
Sunny, with a high near 94. Southeast wind 5 to 7 mph.
Tuesday Night
Mostly clear, with a low around 66. Southeast wind around 9 mph.
Wednesday
Sunny and hot, with a high near 99. South southeast wind 8 to 13 mph, with gusts as high as 21 mph.
Wednesday Night
A 20 percent chance of showers after midnight. Partly cloudy, with a low around 64. South wind 7 to 10 mph becoming west after midnight. Winds could gust as high as 18 mph.
Thursday
Sunny, with a high near 83. North northwest wind 7 to 13 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 53. North northwest wind 6 to 11 mph.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 51.
Saturday
Sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles NE Lambert MT
 47.87°N 104.42°W (Elev. 2490 ft)
2:28 am MDT Aug 17, 2025
5am MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database