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

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 moderate to locally heavy rain to portions of South Texas into Saturday. Read More >

Current conditions at

Arco (ARC)

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

NA

74°F

23°C

Humidity 26%
Wind Speed SE 5 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 15 Aug 09:50 AM MDT
Extended Forecast for

Mackay ID

  • Today

    Today: Sunny, with a high near 86. West wind 15 to 17 mph becoming south southeast in the morning. Winds could gust as high as 25 mph.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. West southwest wind 7 to 17 mph becoming north northwest after midnight. Winds could gust as high as 25 mph.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 84. West northwest wind 7 to 14 mph becoming southeast in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 55. Southwest wind 6 to 14 mph becoming north northwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

    Low: 55 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 80. West wind 6 to 11 mph becoming south in the afternoon.

    High: 80 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 53. Chance of precipitation is 30%.

    Low: 53 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Monday Night

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

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 86. West wind 15 to 17 mph becoming south southeast in the morning. Winds could gust as high as 25 mph.
Tonight
Mostly clear, with a low around 57. West southwest wind 7 to 17 mph becoming north northwest after midnight. Winds could gust as high as 25 mph.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 84. West northwest wind 7 to 14 mph becoming southeast in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Saturday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 55. Southwest wind 6 to 14 mph becoming north northwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Sunday
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 80. West wind 6 to 11 mph becoming south in the afternoon.
Sunday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 53. Chance of precipitation is 30%.
Monday
Sunny, with a high near 83.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mackay ID
 43.92°N 113.62°W (Elev. 5988 ft)
Last Update:
5:31 am MDT Aug 15, 2025
Forecast Valid:
10am MDT Aug 15, 2025-6pm MDT Aug 21, 2025
 
Forecast Discussion
 
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Additional Resources

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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