Heavy Rainfall and Severe Thunderstorm Threats for the Plains and Southeast

A frontal boundary extending from the western High Plains to the Southeast will focus additional showers and thunderstorms this weekend. Some of these storms may become severe, alongside frequent lightning, and isolated instances of flash flooding. Meanwhile dry conditions will continue for the Great Basin where fire weather concerns linger. For the mid-Atlantic and Northeast, seasonable weather. Read More >

Current conditions at

Arco (ARC)

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

NA

70°F

21°C

Humidity 30%
Wind Speed W 3 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 03 Aug 09:50 AM MDT
Extended Forecast for

4 Miles SW Lost River ID

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 3pm.  Sunny, with a high near 81. Light and variable wind becoming southwest 8 to 13 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 81 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: 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 46. Southwest wind 8 to 13 mph becoming light and variable  after midnight. Winds could gust as high as 21 mph.  Chance of precipitation is 20%.

    Low: 46 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon.  Partly sunny, with a high near 80. Light and variable wind becoming southwest 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 80 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers before midnight.  Mostly clear, with a low around 40. Breezy, with a west southwest wind 17 to 22 mph becoming northwest 5 to 10 mph after midnight. Winds could gust as high as 29 mph.

    Low: 40 °F

    Slight Chance
    Showers and
    Breezy then
    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. Light and variable wind becoming southwest 11 to 16 mph in the afternoon. Winds could gust as high as 24 mph.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 80. Breezy.

    High: 80 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 81. Light and variable wind becoming southwest 8 to 13 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
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 46. Southwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 20%.
Monday
A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 80. Light and variable wind becoming southwest 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph.
Monday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 40. Breezy, with a west southwest wind 17 to 22 mph becoming northwest 5 to 10 mph after midnight. Winds could gust as high as 29 mph.
Tuesday
Sunny, with a high near 80. Light and variable wind becoming southwest 11 to 16 mph in the afternoon. Winds could gust as high as 24 mph.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 84.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Partly sunny, with a high near 80. Breezy.
Thursday Night
Partly cloudy, with a low around 44. Breezy.
Friday
A 20 percent chance of showers. Partly sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Lost River ID
 43.68°N 113.61°W (Elev. 6109 ft)
5:31 am MDT Aug 3, 2025
10am MDT Aug 3, 2025-6pm MDT Aug 9, 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