Ketchum, ID 83340 Weather

Blaine County7:26 PM MDT43.67°N, 114.49°W

Current conditions

Showers And Thunderstorms
47°
Showers And Thunderstorms
Feels like 47°
High 44° Friday·Low 38° tonight
WindS 5 mph gusts 10 mph
Humidity83%
Dew point42°
Visibility10 mi
Cloud cover94%
UV index0 Low
Sunrise8:01 AM
Sunset6:45 PM

Forecast for this hour (no station report in the last two hours)

Forecast

10-day

  • Tonight

    Showers and thunderstorms. Cloudy. Low around 38, with temperatures rising to around 44 overnight. South southeast wind 1 to 6 mph. Chance of precipitation is 100%.

  • Friday

    Rain and snow before 9am, then rain and snow between 9am and noon, then rain and snow. Cloudy. High near 44, with temperatures falling to around 39 in the afternoon. Southwest wind 1 to 5 mph. Chance of precipitation is 100%.

  • Friday Night

    Mostly cloudy, with a low around 31. North northwest wind 3 to 8 mph.

National Weather Service forecast updated 13 hrs ago.

Hourly

Hourly forecast
  1. Now Showers And Thunderstorms 47°89%
  2. 8 PM Showers And Thunderstorms 46°99%
  3. 9 PM Rain Likely 47°74%
  4. 10 PM Rain Likely 46°69%
  5. 11 PM Rain Likely 46°60%
  6. Fri12 AM Light Rain Likely 46°60%
  7. 1 AM Chance Light Rain 46°54%
  8. 2 AM Light Rain Likely 46°58%
  9. 3 AM Showers And Thunderstorms Likely 45°72%
  10. 4 AM Showers And Thunderstorms 44°82%
  11. 5 AM Showers And Thunderstorms Likely 43°66%
  12. 6 AM Showers And Thunderstorms 42°86%
  13. 7 AM Showers And Thunderstorms 41°89%
  14. 8 AM Showers And Thunderstorms 40°80%
  15. 9 AM Rain And Snow 39°94%
  16. 10 AM Rain And Snow 39°95%
  17. 11 AM Rain And Snow 38°87%
  18. 12 PM Rain And Snow 39°87%
  19. 1 PM Rain And Snow 41°90%
  20. 2 PM Rain And Snow Likely 40°66%
  21. 3 PM Chance Light Rain 40°46%
  22. 4 PM Chance Rain And Snow 40°36%
  23. 5 PM Chance Rain And Snow 39°29%
  24. 6 PM Cloudy 39°13%

10-day forecast

Details
  1. TodayOct 22 Slight Chance Light Rain then Slight Chance Showers And Thunderstorms Slight Chance Light Rain then Slight Chance Showers And Thunderstorms99%38°53°
  2. FriOct 23 Rain And Snow Rain And Snow96%31°44°
  3. SatOct 24 Sunny Sunny31°44°
  4. SunOct 25 Sunny Sunny32°47°
  5. MonOct 26 Mostly Sunny Mostly Sunny13%33°47°
  6. TueOct 27 Mostly Sunny Mostly Sunny14%31°45°
  7. WedOct 28 Mostly Sunny Mostly Sunny33°46°
  8. ThuOct 29 Cloudy Cloudy14°42°
  9. FriOct 30 Mostly sunny Mostly sunny21°45°
  10. SatOct 31 Cloudy Cloudy24°47°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
Open the National Weather Service radar (the map here needs JavaScript).

Weather news in Idaho

More weather news

Air quality

19
Good
Fine particles (PM2.5)

Air quality is satisfactory, and air pollution poses little or no risk.

Forecast

  • ThuGood (15)
  • FriGood (15)
  • SatGood

Ketchum, ID reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 8:01 AM
Sunset 6:45 PM
Daylight 10 h 43 min (−2 min 49 s tomorrow)
Waxing Gibbous · 89% lit
Moonrise 4:55 PM Moonset 4:04 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low53° / 26°
Record high75° (2003)
Record low7° (1943)
Wettest0.45 in (1979)
Yesterday65° / 32°, 0.05 in
Month to date0.06 in (normal 0.90 in)

Ketchum Ranger Station, records since 1937. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in PIH, issued 1 hr ago

Key Messages

- Flash Flood Watch for Local Burn Scars: A Flash Flood Watch is in effect for the Wapiti, Ohio, and Big Rock burn scars from late tonight through Friday, where incoming precipitation could trigger debris flows and rapid runoff.

- Widespread showers and storms this evening through most of the day Friday.

- Much colder Friday. Daytime temperatures will drop by around 20 degrees.

Discussion

Issued at 139 PM MDT Thu Oct 22 2026

The low pressure system over California will continue to move inland and lift northward today, then overhead on Friday before exiting the region on Saturday. Showers and thunderstorms will overspread the CWA late this afternoon and tonight into Friday morning. Precipitation will trend lighter moving into Friday evening and conclude for the entirety of the forecast area by early Saturday morning.

The 48-hour National Blend mean QPF has increased slightly, sitting at roughly an inch across much of the forecast area, with closer to 1.25 to 1.50 inches across the central mountains eastward into the Island Park region. The 10th percentile is around 0.25" to 0.50" for much of eastern Idaho and closer to 0.75" for the central mountains into the Island Park region. The 90th percentile has increased to 1.50 to 2 inches for most of east Idaho, with around 2 inches for the central mountains. The official WPC forecast continues to run on the dry end, still sitting between the 10th and 25th percentile with much of the area forecast to receive less than 0.75" with 1 inch to 1.25 inches across the high elevations of the central mountains and Montana Divide region. Thus, a large spread continues to reflect a broad range of model solutions.

The snowfall forecast remains consistent with most of the snow falling above 7000 feet and mainly across the central mountains. There will be a 20 degree or so drop in temps between Thursday and Friday and temperatures Saturday morning will start off below freezing for many, but precipitation will largely be concluded by that time.

Dry weather is likely over the weekend into early next week. Temperatures will be a touch below average over the weekend and return to seasonable levels for next week.

Aviation

Issued at 533 PM MDT Thu Oct 22 2026

Widespread showers expected to increase through the evening period. A line of thunderstorms moving through the central Idaho mountains will push to the north through 04z. Another line of thunderstorms coming from Nevada and Utah will sweep into KBYI KPIH KIDA through 05Z By the time it reaches KDIJ it should be rain showers. Upper level low will move through the area during the next 24 hours producing widespread MVFR conditions due to ceilings and visibiilty with rain showers. Anticipate some IFR conditions with heavier rain showers. Winds will increase by 18z tomorrow in the Snake River airport sights.

Fire Weather

Issued at 102 AM MDT Thu Oct 22 2026

Isolated to scattered thunderstorms are expected today. Some gusts to 35 mph are possible near storms. Otherwise winds should remain light. The wetting rains should arrive tonight and continue into Friday.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.