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

Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Current conditions at

Arco (ARC)

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

NA

52°F

11°C

Humidity 38%
Wind Speed SSE 2 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 09 Aug 01:35 AM MDT
Extended Forecast for

Arco ID

  • Overnight

    Overnight: Partly cloudy, with a low around 47. North wind 6 to 10 mph.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 75. Light and variable wind becoming south southwest 5 to 9 mph in the afternoon.

    High: 75 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 50. West southwest wind 7 to 10 mph becoming northeast in the evening.

    Low: 50 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 82. North wind 6 to 9 mph becoming southwest in the afternoon.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54. West southwest wind 8 to 10 mph becoming north after midnight. Winds could gust as high as 18 mph.

    Low: 54 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Monday Night

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

    Low: 56 °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

Overnight
Partly cloudy, with a low around 47. North wind 6 to 10 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 75. Light and variable wind becoming south southwest 5 to 9 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 50. West southwest wind 7 to 10 mph becoming northeast in the evening.
Sunday
Sunny, with a high near 82. North wind 6 to 9 mph becoming southwest in the afternoon.
Sunday Night
Mostly clear, with a low around 54. West southwest wind 8 to 10 mph becoming north after midnight. Winds could gust as high as 18 mph.
Monday
Sunny, with a high near 85.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 88.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 87.
Wednesday Night
Mostly clear, with a low around 55. Breezy.
Thursday
Sunny, with a high near 83. Breezy.
Thursday Night
Mostly clear, with a low around 51. Breezy.
Friday
Sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Arco ID
 43.64°N 113.3°W (Elev. 6066 ft)
Last Update:
1:12 am MDT Aug 9, 2025
Forecast Valid:
1am MDT Aug 9, 2025-6pm MDT Aug 15, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

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Chance of Precipitation