Skip to content

Checked

Lost River, ID Weather

Tonight: Mostly Cloudy, low 32°F. Hourly and 7-day forecast from the National Weather Service. Times are local (MDT).

Lost River, ID current weather

43°F

Mostly Cloudy

Forecast for this hour. No recent report from a nearby station.

H -- / L 32°

  • No rain expected in the next 12 hours

No recent station report. NWS hourly forecast updated 10/29/2026, 4:31 PM PT

Hourly forecast

NWS, updated 10/29/2026, 4:31 PM PT

  1. Now43°
  2. 8 PM38°
  3. 9 PM37°
  4. 10 PM37°
  5. 11 PM37°
  6. 12 AM36°Fri
  7. 1 AM35°
  8. 2 AM34°
  9. 3 AM34°10%
  10. 4 AM34°11%
  11. 5 AM33°10%
  12. 6 AM33°17%
  13. 7 AM32°18%
  14. 8 AM32°17%
  15. 9 AM34°20%
  16. 10 AM39°21%
  17. 11 AM42°32%
  18. 12 PM45°47%
  19. 1 PM47°51%
  20. 2 PM47°66%
  21. 3 PM48°67%
  22. 4 PM50°70%
  23. 5 PM47°59%
  24. 6 PM46°47%
  25. 7 PM44°50%
  26. 8 PM40°33%
  27. 9 PM39°11%
  28. 10 PM39°
  29. 11 PM37°23%
  30. 12 AM36°22%Sat
  31. 1 AM35°
  32. 2 AM34°
  33. 3 AM34°34%
  34. 4 AM33°15%
  35. 5 AM32°24%
  36. 6 AM32°33%
  37. 7 AM31°33%
  38. 8 AM31°33%
  39. 9 AM33°33%
  40. 10 AM36°33%
  41. 11 AM41°33%
  42. 12 PM45°67%
  43. 1 PM48°67%
  44. 2 PM49°67%
  45. 3 PM49°67%
  46. 4 PM48°67%
  47. 5 PM47°67%
  48. 6 PM45°81%

7-day forecast

Tap a day for details

  • Today10/2911% chance of precipitationLow 32°High

    Tonight: Mostly cloudy, with a low around 32. North northwest wind around 3 mph.

    Mostly Cloudy
  • Fri10/3070% chance of precipitationLow 31°High 52°

    Friday: Rain and snow likely. Mostly cloudy. High near 52, with temperatures falling to around 47 in the afternoon. South southeast wind 2 to 10 mph. Chance of precipitation is 70%.

    Friday Night: A chance of rain before 9pm, then areas of fog and a slight chance of rain between 11pm and 3am, then areas of fog and a chance of rain and snow. Mostly cloudy, with a low around 31. West wind 1 to 5 mph. Chance of precipitation is 50%.

    Rain And Snow Likely
  • Sat10/3196% chance of precipitationLow 32°High 51°

    Saturday: Areas of fog and rain and snow likely. Mostly cloudy, with a high near 51. North northwest wind 1 to 7 mph. Chance of precipitation is 70%.

    Saturday Night: Rain before midnight, then rain and snow. Cloudy, with a low around 32. East southeast wind 2 to 6 mph. Chance of precipitation is 100%.

    Areas Of Fog
  • Sun11/193% chance of precipitationLow 28°High 48°

    Sunday: Rain. Cloudy, with a high near 48. Chance of precipitation is 90%.

    Sunday Night: Rain likely before 11pm. Mostly cloudy, with a low around 28. Chance of precipitation is 60%.

    Light Rain
  • Mon11/2Low 27°High 50°

    Monday: Mostly sunny, with a high near 50.

    Monday Night: Partly cloudy, with a low around 27.

    Mostly Sunny
  • Tue11/3Low 28°High 49°

    Tuesday: Partly sunny, with a high near 49.

    Tuesday Night: Partly cloudy, with a low around 28.

    Partly Sunny
  • Wed11/4Low 29°High 52°

    Wednesday: Mostly sunny, with a high near 52.

    Wednesday Night: Partly cloudy, with a low around 29.

    Mostly Sunny
  • Thu11/5Low High 52°

    Thursday: Mostly sunny, with a high near 52.

    Mostly Sunny

Forecast for 43.687, -113.631 from the NWS PIH office, updated 10/29/2026, 4:31 PM PT · Official forecast on weather.gov

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now43°Mostly Cloudy0%2 mph
  2. 8 PM38°Mostly Cloudy1%3 mph
  3. 9 PM37°Mostly Cloudy1%3 mph
  4. 10 PM37°Mostly Cloudy1%2 mph
  5. 11 PM37°Mostly Cloudy2%1 mph
  6. 12 AM36°Partly Cloudy3%1 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (up to 24 hours) and GOES

Latest

Frequently asked questions

Will it rain in Lost River, ID in the next 24 hours?
The hourly forecast shows a 51% chance of precipitation around 10/30/2026, 1:00 PM MDT.
What time is sunrise and sunset in Lost River, ID today?
Sunrise is about 8:06 AM MDT and sunset is about 6:29 PM MDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Lost River, ID?
At Craters of the Moon, the 1991 to 2020 normal high in October is 54°F and the normal low is 27°F.

Nearby hazards

Idaho hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: None reported

UV and air quality forecast

EPA and AirNow

AQI forecast tomorrow (Ketchum)
14GoodPM2.5
AQI forecast tomorrow (Ketchum)
GoodPM2.5

UV index guide · Air quality

Drought

By county

Custer County, week of 10/27/2026

3% of the county is in moderate drought or worse.

Sun and moon

Local time, center of the area

Sunrise
8:06 AM
Sunset
6:29 PM
Daylight
10 hr 22 min
Moon
Waning Gibbous 84% lit
First light (civil dawn)
7:37 AM
Last light (civil dusk)
6:59 PM
Moonrise
8:51 PM
Moonset
12:35 PM

Normal October weather

Climate

Normal October high 54°, low 27°, precipitation 1.29 in for the month. 1991 to 2020 normals at Craters of the Moon, 16 mi away.

Other places nearby

Data sources

See something wrong? Request a correction

About this data

Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.

Forecasts, observations and alerts come from the National Weather Service (api.weather.gov). Data can be delayed by minutes to hours, and an observation station may be miles from the place named on this page. This site is not affiliated with NOAA or the National Weather Service.

DatenUS is a private website and is not affiliated with or endorsed by any government agency. We republish public data from the sources listed on this page. Data can be incomplete, delayed or wrong. Always check the original source before you make a decision.

Our servers read this data automatically from government sources. Errors can come from the source itself or from the way we read, process or display it, and we do not guarantee that it is accurate, complete or current. Verify anything important with the official source.

Report an errorRead the full disclaimer