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

Hazardous Weather Conditions

Current conditions at

Arco (ARC)

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

NA

62°F

17°C

Humidity 45%
Wind Speed ENE 3 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 17 Aug 04:50 AM MDT
Extended Forecast for

8 Miles ESE Mackay ID

Red Flag Warning August 17, 12:00pm until August 17, 09:00pm
Click here for hazard details and duration
Red Flag Warning

  • Today

    Today: A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 81. Light and variable wind becoming west southwest 6 to 11 mph in the morning. Chance of precipitation is 60%.

    High: 81 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 51. West southwest wind 6 to 11 mph becoming light and variable in the evening.

    Low: 51 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 85. Light and variable wind becoming south 8 to 13 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 85 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 53. South southwest wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. Light and variable wind becoming south 9 to 14 mph in the morning. Winds could gust as high as 21 mph.

    High: 89 °F

    Sunny

  • Tuesday Night

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

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Wednesday Night

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

    Low: 53 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 81. Light and variable wind becoming west southwest 6 to 11 mph in the morning. Chance of precipitation is 60%.
Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 51. West southwest wind 6 to 11 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 85. Light and variable wind becoming south 8 to 13 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 53. South southwest wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Tuesday
Sunny, with a high near 89. Light and variable wind becoming south 9 to 14 mph in the morning. Winds could gust as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Sunny, with a high near 89.
Thursday Night
Mostly clear, with a low around 53.
Friday
Sunny, with a high near 89.
Friday Night
Mostly clear, with a low around 54.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
8 Miles ESE Mackay ID
 43.87°N 113.46°W (Elev. 5732 ft)
Last Update:
2:18 am MDT Aug 17, 2025
Forecast Valid:
5am MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation