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
64°F
18°C
| Humidity | 30% |
| Wind Speed | N 3 MPH |
| Barometer | NA |
| Dewpoint | 33°F (1°C) |
| Visibility | NA |
| Last update | 10 Aug 12:50 AM MDT |
Extended Forecast for
4 Miles SW Lost River ID
Overnight
Low: 41 °F
Partly Cloudy
Sunday
High: 81 °F
Sunny
Sunday Night
Low: 46 °F
Mostly Clear
Monday
High: 85 °F
Sunny
Monday Night
Low: 49 °F
Mostly Clear
Tuesday
High: 88 °F
Sunny
Tuesday Night
Low: 50 °F
Mostly Clear
Wednesday
High: 88 °F
Sunny
Wednesday Night
Low: 48 °F
Mostly Clear
Detailed Forecast
Overnight
Partly cloudy, with a low around 41. North northwest wind around 6 mph.
Sunday
Sunny, with a high near 81. Light and variable wind becoming north 5 to 10 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 46. North wind 6 to 10 mph becoming west in the evening.
Monday
Sunny, with a high near 85. Light and variable wind becoming south 5 to 9 mph in the afternoon.
Monday Night
Mostly clear, with a low around 49. South southwest wind 6 to 11 mph becoming light and variable after midnight.
Tuesday
Sunny, with a high near 88.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Sunny, with a high near 81.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles SW Lost River ID
43.68°N 113.61°W (Elev. 6109 ft)
43.68°N 113.61°W (Elev. 6109 ft)
11:31 pm MDT Aug 9, 2025
1am MDT Aug 10, 2025-6pm MDT Aug 16, 2025
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
