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

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 >

Hazardous Weather Conditions

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

12 Miles WNW 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 56. Breezy, with a west wind 17 to 22 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 32 mph.

    Low: 56 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 84. North northwest wind 6 to 11 mph becoming west southwest 15 to 20 mph in the morning. Winds could gust as high as 28 mph.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53. West wind 8 to 18 mph, with gusts as high as 26 mph.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84. Southwest wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 55.

    Low: 55 °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 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 87. Breezy, with a west wind around 22 mph, with gusts as high as 32 mph.
Tonight
Mostly clear, with a low around 56. Breezy, with a west wind 17 to 22 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 32 mph.
Thursday
Sunny, with a high near 84. North northwest wind 6 to 11 mph becoming west southwest 15 to 20 mph in the morning. Winds could gust as high as 28 mph.
Thursday Night
Mostly clear, with a low around 53. West wind 8 to 18 mph, with gusts as high as 26 mph.
Friday
Sunny, with a high near 84. Southwest wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.
Friday Night
Mostly clear, with a low around 55.
Saturday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 81.
Saturday Night
Partly cloudy, with a low around 54.
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 52.
Monday
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 84.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles WNW Mackay ID
 43.98°N 113.85°W (Elev. 6371 ft)
Last Update:
5:31 pm MDT Aug 13, 2025
Forecast Valid:
5pm MDT Aug 13, 2025-6pm MDT Aug 20, 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