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

67°F

19°C

Humidity 26%
Wind Speed SW 14 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 08 Aug 09:05 PM MDT
Extended Forecast for

10 Miles WNW Atomic City ID

  • Tonight

    Tonight: Mostly clear, with a low around 46. Southwest wind 6 to 13 mph becoming northeast after midnight. Winds could gust as high as 18 mph.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 79. Northeast wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 47. West wind 8 to 10 mph becoming south in the evening.

    Low: 47 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 84. North wind around 8 mph becoming south southwest in the afternoon.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 51. South southwest wind 8 to 10 mph becoming north after midnight.

    Low: 51 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Monday Night

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

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Tuesday Night

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

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 46. Southwest wind 6 to 13 mph becoming northeast after midnight. Winds could gust as high as 18 mph.
Saturday
Mostly sunny, with a high near 79. Northeast wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Partly cloudy, with a low around 47. West wind 8 to 10 mph becoming south in the evening.
Sunday
Sunny, with a high near 84. North wind around 8 mph becoming south southwest in the afternoon.
Sunday Night
Mostly clear, with a low around 51. South southwest wind 8 to 10 mph becoming north after midnight.
Monday
Sunny, with a high near 89.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Sunny, with a high near 91.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Sunny, with a high near 92.
Wednesday Night
Partly cloudy, with a low around 56. Breezy.
Thursday
Sunny, with a high near 89. Breezy.
Thursday Night
Partly cloudy, with a low around 51. Breezy.
Friday
Sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles WNW Atomic City ID
 43.48°N 113°W (Elev. 5036 ft)
Last Update:
5:31 pm MDT Aug 8, 2025
Forecast Valid:
9pm MDT Aug 8, 2025-6pm MDT Aug 15, 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