Lost River, Idaho Weather
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Weather Forecast for Lost River, Idaho : Custer County
Issued: 1:53 am MDT Sep 14, 2025 Latitude: 43.68691 Longitude: -113.614571 View on Google Maps

MouseOver for Detail Forecast
Overnight Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Mostly Clear on Overnight 20% chance of rain on Sunday 20% chance of rain on Monday Sunny on Tuesday Sunny on Wednesday Sunny on Thursday 20% chance of rain on Friday 30% chance of thunderstorms on Saturday
Low: 39°F High: 73°F High: 64°F High: 70°F High: 75°F High: 76°F High: 74°F High: 71°F
Low: 35°F Low: 35°F Low: 39°F Low: 41°F Low: 43°F Low: 41°F  
Mostly Clear Rain Rain Sunny Sunny Sunny Rain Thunderstorms
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Current Conditions at
HAILEY - (KSUN)
52°
Clear
as of 2:15 AM MDST
Rel. Humidity: 71%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
9 MPH
320° Northwest
Cloud Level(s): Clear
Current Conditions at
CHALLIS - (KLLJ)
52°
Clear
as of 1:55 AM MDST
Rel. Humidity: 76%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
STANLEY RANGER STN - (KSNT)
39°
Clear
as of 1:51 AM MDST
Rel. Humidity: 86%
Dew Point: 36°F
Pressure: 30.09 in.
Wind Data
3 MPH
190° South
Current Conditions at
REXBURG - (KRXE)
50°
Clear
as of 1:53 AM MDST
Rel. Humidity: 71%
Dew Point: 41°F
Visibility: 10 Miles
Pressure: 30.02 in.
Flight Rule: VFR
Wind Data
8 MPH
0° North
Cloud Level(s): Clear
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 39. Calm wind.
20% chance of rain Sunday Sunday... A slight chance of showers between 3pm and 4pm. Mostly sunny, with a high near 73. Light and variable wind becoming west southwest 10 to 15 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 20%.
20% chance of rain Sunday Night Sunday Night... A slight chance of showers before 8pm, then a slight chance of showers after 5am. Mostly clear, with a low around 35. West southwest wind 10 to 15 mph becoming light west northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 20%.
20% chance of rain Monday Monday... A 20 percent chance of showers. Mostly sunny, with a high near 64. Northwest wind 5 to 8 mph becoming south in the afternoon.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 35. North wind 5 to 9 mph becoming light after midnight.
Sunny on Tuesday Tuesday... Sunny, with a high near 70.
Clear on Tuesday Night Tuesday Night... Clear, with a low around 39.
Sunny on Wednesday Wednesday... Sunny, with a high near 75.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 41.
Sunny on Thursday Thursday... Sunny, with a high near 76.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 43.
20% chance of rain Friday Friday... A 20 percent chance of showers. Mostly sunny, with a high near 74.
30% chance of rain Friday Night Friday Night... A 30 percent chance of showers. Mostly cloudy, with a low around 41.
30% chance of thunderstorms Saturday Saturday... A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 71.
Current Radar Image


Sun Almanac for Lost River, Idaho
Sunrise: 07:13 AM
Sunset: 7:46 PM
Civil Sunrise:06:45 AM
Civil Sunset: 8:15 PM
Nautical Sunrise: 06:10 AM
Nautical Sunset: 8:49 PM
Astro Sunrise: 05:35 AM
Astro Sunset: 9:24 PM
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