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Sun Valley, ID 83354 Weather

Tonight: Mostly Cloudy then Slight Chance Light Rain, low 31°F. Hourly and 7-day forecast from the National Weather Service. Times are local (MDT).

Sun Valley, ID 83354 current weather

37°F

Mostly Cloudy

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

H -- / L 31°

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. Now37°
  2. 9 PM36°
  3. 10 PM36°
  4. 11 PM36°
  5. 12 AM35°Fri
  6. 1 AM34°
  7. 2 AM33°
  8. 3 AM33°14%
  9. 4 AM32°15%
  10. 5 AM33°15%
  11. 6 AM33°31%
  12. 7 AM32°31%
  13. 8 AM32°35%
  14. 9 AM33°37%
  15. 10 AM35°46%
  16. 11 AM38°47%
  17. 12 PM40°55%
  18. 1 PM41°62%
  19. 2 PM42°79%
  20. 3 PM43°89%
  21. 4 PM44°75%
  22. 5 PM45°49%
  23. 6 PM43°37%
  24. 7 PM41°34%
  25. 8 PM40°
  26. 9 PM38°
  27. 10 PM37°
  28. 11 PM37°
  29. 12 AM36°Sat
  30. 1 AM34°
  31. 2 AM33°
  32. 3 AM33°
  33. 4 AM32°
  34. 5 AM32°12%
  35. 6 AM32°21%
  36. 7 AM30°21%
  37. 8 AM30°21%
  38. 9 AM31°21%
  39. 10 AM34°21%
  40. 11 AM38°21%
  41. 12 PM41°54%
  42. 1 PM44°54%
  43. 2 PM46°54%
  44. 3 PM46°54%
  45. 4 PM46°54%
  46. 5 PM45°54%
  47. 6 PM43°84%
  48. 7 PM41°84%

7-day forecast

Tap a day for details

  • Today10/2915% chance of precipitationLow 31°High

    Tonight: A slight chance of rain after 4am. Mostly cloudy. Low around 31, with temperatures rising to around 33 overnight. East wind around 6 mph. Chance of precipitation is 20%.

    Mostly Cloudy then Slight Chance Light Rain
  • Fri10/3089% chance of precipitationLow 30°High 47°

    Friday: Areas of fog and a chance of rain before 10am, then areas of fog and rain and snow. Cloudy. High near 47, with temperatures falling to around 45 in the afternoon. Southeast wind around 6 mph. Chance of precipitation is 90%.

    Friday Night: A chance of rain before 8pm, then widespread fog. Mostly cloudy. Low around 30, with temperatures rising to around 32 overnight. East northeast wind around 3 mph. Chance of precipitation is 40%.

    Areas Of Fog
  • Sat10/3196% chance of precipitationLow 32°High 48°

    Saturday: Widespread fog and a slight chance of rain and snow before noon, then a chance of rain and snow. Mostly cloudy, with a high near 48. East wind 1 to 6 mph. Chance of precipitation is 50%.

    Saturday Night: Rain before midnight, then rain and snow between midnight and 4am, then rain and widespread fog. Cloudy, with a low around 32. East southeast wind around 6 mph. Chance of precipitation is 100%.

    Widespread Fog then Chance Rain And Snow
  • Sun11/191% chance of precipitationLow 26°High 46°

    Sunday: Rain and widespread fog before 11am, then widespread fog and rain and snow. Mostly cloudy, with a high near 46. Chance of precipitation is 90%.

    Sunday Night: A chance of rain before 11pm. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.

    Widespread Fog
  • Mon11/2Low 24°High 48°

    Monday: Mostly sunny, with a high near 48.

    Monday Night: Partly cloudy, with a low around 24.

    Mostly Sunny
  • Tue11/3Low 26°High 48°

    Tuesday: Partly sunny, with a high near 48.

    Tuesday Night: Partly cloudy, with a low around 26.

    Partly Sunny
  • Wed11/4Low 27°High 51°

    Wednesday: Mostly sunny, with a high near 51.

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

    Mostly Sunny
  • Thu11/512% chance of precipitationLow High 51°

    Thursday: Mostly sunny, with a high near 51.

    Mostly Sunny

Forecast for 43.670, -114.323 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. Now37°Mostly Cloudy1%5 mph
  2. 9 PM36°Mostly Cloudy1%6 mph
  3. 10 PM36°Mostly Cloudy1%6 mph
  4. 11 PM36°Mostly Cloudy2%5 mph
  5. 12 AM35°Mostly Cloudy3%3 mph
  6. 1 AM34°Mostly Cloudy4%3 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 Sun Valley, ID 83354 in the next 24 hours?
The hourly forecast shows a 55% chance of precipitation around 10/30/2026, 12:00 PM MDT.
What time is sunrise and sunset in Sun Valley, ID 83354 today?
Sunrise is about 8:09 AM MDT and sunset is about 6:32 PM MDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Sun Valley, ID 83354?
At Ketchum Rs, the 1991 to 2020 normal high in October is 56°F and the normal low is 28°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: East Fork Fire (266 acres)

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

Blaine County, week of 10/27/2026

69% of the county is in moderate drought or worse, 4% in extreme drought or worse.

Sun and moon

Local time, center of the area

Sunrise
8:09 AM
Sunset
6:32 PM
Daylight
10 hr 22 min
Moon
Waning Gibbous 83% lit
First light (civil dawn)
7:40 AM
Last light (civil dusk)
7:01 PM
Moonrise
8:54 PM
Moonset
12:38 PM

Normal October weather

Climate

Normal October high 56°, low 28°, precipitation 1.40 in for the month. 1991 to 2020 normals at Ketchum Rs, 2 mi away.

Other places nearby

Data sources

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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.

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