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Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

LITTLE SNOWY (LSNM8)

Lat: 46.75128°NLon: 109.02317°WElev: 4975.0ft.

NA

74°F

23°C

Humidity 43%
Wind Speed NNE 3 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Last update 17 Aug 11:40 AM MDT
Extended Forecast for

14 Miles S Grass Range MT

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 81. Southeast wind around 7 mph.

    High: 81 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Cloudy, then gradually becoming partly cloudy, with a low around 54. South wind 5 to 8 mph becoming northwest in the evening. Chance of precipitation is 50%.

    Low: 54 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers after noon. Widespread haze before 10am. Mostly sunny, with a high near 84. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 84 °F

    Haze then
    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. Southwest wind around 6 mph becoming light and variable after midnight.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91. South wind 5 to 7 mph.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60. South southeast wind 5 to 7 mph becoming southwest after midnight.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90. West southwest wind 6 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 18 mph.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 59. West northwest wind 7 to 10 mph.

    Low: 59 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 81. Southeast wind around 7 mph.
Tonight
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Cloudy, then gradually becoming partly cloudy, with a low around 54. South wind 5 to 8 mph becoming northwest in the evening. Chance of precipitation is 50%.
Monday
A 30 percent chance of showers after noon. Widespread haze before 10am. Mostly sunny, with a high near 84. Calm wind becoming south 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 58. Southwest wind around 6 mph becoming light and variable after midnight.
Tuesday
Sunny, with a high near 91. South wind 5 to 7 mph.
Tuesday Night
Mostly clear, with a low around 60. South southeast wind 5 to 7 mph becoming southwest after midnight.
Wednesday
Sunny, with a high near 90. West southwest wind 6 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 59. West northwest wind 7 to 10 mph.
Thursday
Sunny, with a high near 77.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 51.
Friday
Sunny, with a high near 73.
Friday Night
Mostly clear, with a low around 49.
Saturday
Sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
14 Miles S Grass Range MT
 46.83°N 108.83°W (Elev. 4199 ft)
Last Update:
8:31 am MDT Aug 17, 2025
Forecast Valid:
12pm MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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