Heavy Rain in the Southern Appalachians; Fire Weather and Heat in the West; Monitoring Tropical Storm Erin

Heavy to excessive rainfall over the southern Appalachians may bring areas of flooding today. Gusty winds and low relative humidity will bring critical fire weather conditions to parts of the Great Basin and northern Rockies today and Thursday. Hot to extremely hot temperatures are in place through today across parts of the western U.S. Read More >

Current conditions at

Arco (ARC)

Lat: 43.62455°NLon: 113.2971°WElev: 5290.0ft.

NA

91°F

33°C

Humidity 15%
Wind Speed WSW 26 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Heat Index87°F (31°C)
Last update 13 Aug 05:35 PM MDT
Extended Forecast for

6 Miles NW Mackay ID

Red Flag Warning until August 13, 10:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning until August 13, 10:00pm

    NOW until 10:00pm Wed

    Red Flag Warning

  • This Afternoon

    High: 87 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 54. Breezy, with a northwest wind 17 to 22 mph decreasing to 7 to 12 mph in the evening. Winds could gust as high as 32 mph.

    Low: 54 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 84. Northwest wind 7 to 12 mph becoming west southwest 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51. Northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 28 mph.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82. West wind 6 to 11 mph becoming southwest 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers after noon.  Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 87. Breezy, with a west wind around 23 mph, with gusts as high as 33 mph.
Tonight
Mostly clear, with a low around 54. Breezy, with a northwest wind 17 to 22 mph decreasing to 7 to 12 mph in the evening. Winds could gust as high as 32 mph.
Thursday
Sunny, with a high near 84. Northwest wind 7 to 12 mph becoming west southwest 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph.
Thursday Night
Mostly clear, with a low around 51. Northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 28 mph.
Friday
Sunny, with a high near 82. West wind 6 to 11 mph becoming southwest 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.
Friday Night
Mostly clear, with a low around 53.
Saturday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 81.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 50.
Monday
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Sunny, with a high near 84.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NW Mackay ID
 43.98°N 113.69°W (Elev. 6470 ft)
5:31 pm MDT Aug 13, 2025
5pm MDT Aug 13, 2025-6pm MDT Aug 20, 2025
 
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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