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

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

SHENANGO (SGOM8)

Lat: 45.45964°NLon: 111.24447°WElev: 5391.0ft.

NA

62°F

17°C

Humidity 58%
Wind Speed NNE 2 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 18 Aug 12:39 AM MDT
Extended Forecast for

9 Miles N Big Sky MT

  • Overnight

    Overnight: Partly cloudy, with a low around 46. South southwest wind around 10 mph.

    Low: 46 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Widespread haze after 5pm. Mostly sunny, with a high near 66. Southwest wind 10 to 13 mph, with gusts as high as 23 mph.

    High: 66 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 50. Southwest wind 8 to 11 mph becoming south southeast in the evening. Winds could gust as high as 18 mph.

    Low: 50 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 72. South wind around 10 mph becoming west southwest in the afternoon. Winds could gust as high as 18 mph.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 51. South wind 9 to 13 mph, with gusts as high as 22 mph.

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 69. South wind 10 to 14 mph becoming west southwest in the afternoon. Winds could gust as high as 23 mph.

    High: 69 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 46. West southwest wind 6 to 11 mph becoming east southeast in the evening. Winds could gust as high as 21 mph.

    Low: 46 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 64. South southeast wind 5 to 13 mph becoming north northwest in the morning. Winds could gust as high as 23 mph.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 46. South southwest wind around 10 mph.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Widespread haze after 5pm. Mostly sunny, with a high near 66. Southwest wind 10 to 13 mph, with gusts as high as 23 mph.
Monday Night
Mostly clear, with a low around 50. Southwest wind 8 to 11 mph becoming south southeast in the evening. Winds could gust as high as 18 mph.
Tuesday
Sunny, with a high near 72. South wind around 10 mph becoming west southwest in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 51. South wind 9 to 13 mph, with gusts as high as 22 mph.
Wednesday
Mostly sunny, with a high near 69. South wind 10 to 14 mph becoming west southwest in the afternoon. Winds could gust as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 46. West southwest wind 6 to 11 mph becoming east southeast in the evening. Winds could gust as high as 21 mph.
Thursday
Sunny, with a high near 64. South southeast wind 5 to 13 mph becoming north northwest in the morning. Winds could gust as high as 23 mph.
Thursday Night
Mostly clear, with a low around 43.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 42.
Saturday
Sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 45.
Sunday
A slight chance of showers. Mostly sunny, with a high near 64.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles N Big Sky MT
 45.38°N 111.37°W (Elev. 9485 ft)
Last Update:
8:43 pm MDT Aug 17, 2025
Forecast Valid:
1am MDT Aug 18, 2025-6pm MDT Aug 24, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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