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 locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

Arco (ARC)

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

NA

87°F

31°C

Humidity 15%
Wind Speed SW 17 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Heat Index83°F (28°C)
Last update 15 Aug 06:05 PM MDT
Extended Forecast for

3 Miles SE Mackay ID

  • Tonight

    Tonight: Mostly clear, with a low around 56. Southwest wind 12 to 17 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.

    Low: 56 °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 85. West northwest wind 5 to 10 mph becoming south southwest 11 to 16 mph in the afternoon. Winds could gust as high as 24 mph.  Chance of precipitation is 30%.

    High: 85 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 55. Northwest wind 7 to 16 mph, with gusts as high as 24 mph.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 81. Northwest wind 5 to 10 mph becoming south in the morning.

    High: 81 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday 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 53. Southwest wind 6 to 11 mph becoming light and variable  after midnight.  Chance of precipitation is 20%.

    Low: 53 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 84.

    High: 84 °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 88.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 56. Southwest wind 12 to 17 mph decreasing to 5 to 10 mph 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 85. West northwest wind 5 to 10 mph becoming south southwest 11 to 16 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 55. Northwest wind 7 to 16 mph, with gusts as high as 24 mph.
Sunday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. Northwest wind 5 to 10 mph becoming south in the morning.
Sunday 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 53. Southwest wind 6 to 11 mph becoming light and variable after midnight. Chance of precipitation is 20%.
Monday
Sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 88.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Sunny, with a high near 90.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Mackay ID
 43.88°N 113.58°W (Elev. 5951 ft)
5:31 pm MDT Aug 15, 2025
6pm MDT Aug 15, 2025-6pm MDT Aug 22, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database