What is the weather in Sun Valley right now?

Current weather in Sun Valley is clear sky.

Where can I find the hourly weather forecast for Sun Valley?

This page shows hourly weather forecast for Sun Valley, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Sun Valley updated regularly?

Weather data for Sun Valley is updated regularly with the latest available observations and forecasts.

Now · 9:49 AM

Sun Valley Weather & Hourly Forecast

United States · Idaho · 83353

50°F

Sunny

Feels like: 45°F

💧 Humidity 31% 🌡 Pressure 30.21 inHg 💨 Wind 0 mph 👁 Visibility 26.7 mi ☁ Clouds 0% ☀️ UV index 0.8 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Sun Valley

Today

10:00 AM

Sunny

50° 💧 None 💨 0 mph H 31%30.21 inHg

1:00 PM

Sunny

59° 💧 None 💨 4 mph H 24%30.18 inHg

4:00 PM

Sunny

62° 💧 None 💨 7 mph H 19%30.15 inHg

7:00 PM

Sunny

58° 💧 None 💨 4 mph H 30%30.18 inHg

10:00 PM

Clear night

44° 💧 None 💨 4 mph H 51%30.27 inHg

Tomorrow

1:00 AM

Clear night

37° 💧 None 💨 4 mph H 68%30.27 inHg

4:00 AM

Clear night

36° 💧 None 💨 4 mph H 68%30.27 inHg

7:00 AM

Clear night

36° 💧 None 💨 3 mph H 61%30.33 inHg

10:00 AM

Sunny

57° 💧 None 💨 1 mph H 31%30.33 inHg

1:00 PM

Sunny

66° 💧 None 💨 4 mph H 23%30.27 inHg

4:00 PM

Sunny

69° 💧 None 💨 7 mph H 20%30.18 inHg

7:00 PM

Sunny

65° 💧 None 💨 2 mph H 29%30.15 inHg

10:00 PM

Clear night

51° 💧 None 💨 2 mph H 40%30.21 inHg

Thursday

1:00 AM

Clear night

45° 💧 None 💨 3 mph H 49%30.18 inHg

4:00 AM

Clear night

43° 💧 None 💨 3 mph H 42%30.15 inHg

7:00 AM

Clear night

41° 💧 None 💨 2 mph H 34%30.12 inHg

Today

10:00 AM

Sunny

50° 💧 None 💨 0 mph H 31%30.21 inHg

11:00 AM

Sunny

54° 💧 None 💨 2 mph H 26%30.21 inHg

12:00 PM

Sunny

56° 💧 None 💨 4 mph H 25%30.21 inHg

1:00 PM

Sunny

59° 💧 None 💨 4 mph H 24%30.18 inHg

2:00 PM

Sunny

61° 💧 None 💨 5 mph H 21%30.15 inHg

3:00 PM

Sunny

62° 💧 None 💨 6 mph H 19%30.15 inHg

4:00 PM

Sunny

62° 💧 None 💨 7 mph H 19%30.15 inHg

5:00 PM

Sunny

62° 💧 None 💨 6 mph H 20%30.15 inHg

6:00 PM

Sunny

60° 💧 None 💨 5 mph H 24%30.18 inHg

7:00 PM

Sunny

58° 💧 None 💨 4 mph H 30%30.18 inHg

8:00 PM

Sunny

51° 💧 None 💨 2 mph H 45%30.21 inHg

9:00 PM

Clear night

48° 💧 None 💨 3 mph H 46%30.24 inHg

10:00 PM

Clear night

44° 💧 None 💨 4 mph H 51%30.27 inHg

11:00 PM

Clear night

40° 💧 None 💨 4 mph H 59%30.27 inHg

Tomorrow

12:00 AM

Clear night

38° 💧 None 💨 4 mph H 64%30.27 inHg

1:00 AM

Clear night

37° 💧 None 💨 4 mph H 68%30.27 inHg

2:00 AM

Clear night

36° 💧 None 💨 4 mph H 70%30.27 inHg

3:00 AM

Clear night

36° 💧 None 💨 4 mph H 71%30.27 inHg

4:00 AM

Clear night

36° 💧 None 💨 4 mph H 68%30.27 inHg

5:00 AM

Clear night

36° 💧 None 💨 3 mph H 65%30.30 inHg

6:00 AM

Clear night

36° 💧 None 💨 3 mph H 63%30.30 inHg

7:00 AM

Clear night

36° 💧 None 💨 3 mph H 61%30.33 inHg

8:00 AM

Sunny

39° 💧 None 💨 3 mph H 56%30.33 inHg

9:00 AM

Sunny

49° 💧 None 💨 4 mph H 44%30.33 inHg

10:00 AM

Sunny

57° 💧 None 💨 1 mph H 31%30.33 inHg

11:00 AM

Sunny

61° 💧 None 💨 2 mph H 26%30.30 inHg

12:00 PM

Sunny

63° 💧 None 💨 3 mph H 24%30.30 inHg

1:00 PM

Sunny

66° 💧 None 💨 4 mph H 23%30.27 inHg

2:00 PM

Sunny

68° 💧 None 💨 6 mph H 23%30.24 inHg

3:00 PM

Sunny

68° 💧 None 💨 8 mph H 22%30.21 inHg

4:00 PM

Sunny

69° 💧 None 💨 7 mph H 20%30.18 inHg

5:00 PM

Sunny

70° 💧 None 💨 6 mph H 18%30.15 inHg

6:00 PM

Sunny

69° 💧 None 💨 5 mph H 17%30.15 inHg

7:00 PM

Sunny

65° 💧 None 💨 2 mph H 29%30.15 inHg

8:00 PM

Sunny

59° 💧 None 💨 1 mph H 36%30.15 inHg

9:00 PM

Clear night

55° 💧 None 💨 1 mph H 36%30.18 inHg

10:00 PM

Clear night

51° 💧 None 💨 2 mph H 40%30.21 inHg

11:00 PM

Clear night

48° 💧 None 💨 3 mph H 43%30.21 inHg

Thursday

12:00 AM

Clear night

46° 💧 None 💨 3 mph H 46%30.21 inHg

1:00 AM

Clear night

45° 💧 None 💨 3 mph H 49%30.18 inHg

2:00 AM

Clear night

43° 💧 None 💨 2 mph H 49%30.18 inHg

3:00 AM

Clear night

43° 💧 None 💨 3 mph H 46%30.18 inHg

4:00 AM

Clear night

43° 💧 None 💨 3 mph H 42%30.15 inHg

5:00 AM

Clear night

42° 💧 None 💨 3 mph H 39%30.15 inHg

6:00 AM

Clear night

41° 💧 None 💨 3 mph H 36%30.15 inHg

7:00 AM

Clear night

41° 💧 None 💨 2 mph H 34%30.12 inHg

8:00 AM

Sunny

43° 💧 None 💨 2 mph H 33%30.15 inHg

9:00 AM

Sunny

52° 💧 None 💨 3 mph H 31%30.15 inHg

10:00 AM

Mostly sunny

59° 💧 None 💨 1 mph H 18%30.12 inHg

11:00 AM

Mostly sunny

64° 💧 None 💨 1 mph H 15%30.09 inHg

12:00 PM

Mostly sunny

67° 💧 None 💨 6 mph H 21%30.03 inHg

1:00 PM

Mostly cloudy

69° 💧 None 💨 9 mph H 22%30.00 inHg

2:00 PM

Overcast

71° 💧 None 💨 8 mph H 21%29.97 inHg

3:00 PM

Overcast

71° 💧 None 💨 9 mph H 19%29.94 inHg

4:00 PM

Overcast

70° 💧 None 💨 10 mph H 18%29.91 inHg

5:00 PM

Overcast

68° 💧 None 💨 9 mph H 19%29.91 inHg

6:00 PM

Mostly cloudy

67° 💧 None 💨 8 mph H 20%29.91 inHg

Friday

3:00 AM

Mostly clear night

48° 💧 None 💨 3 mph H 46%29.88 inHg

6:00 AM

Partly cloudy night

45° 💧 None 💨 3 mph H 47%29.88 inHg

9:00 AM

Sunny

51° 💧 None 💨 3 mph H 41%29.91 inHg

12:00 PM

Sunny

58° 💧 None 💨 9 mph H 33%29.91 inHg

3:00 PM

Sunny

61° 💧 None 💨 10 mph H 21%29.88 inHg

6:00 PM

Sunny

58° 💧 None 💨 7 mph H 17%29.88 inHg

9:00 PM

Clear night

46° 💧 None 💨 0 mph H 30%29.91 inHg

Saturday

12:00 AM

Partly cloudy night

40° 💧 None 💨 2 mph H 31%29.94 inHg

3:00 AM

Clear night

43° 💧 None 💨 1 mph H 23%29.91 inHg

6:00 AM

Mostly clear night

44° 💧 None 💨 2 mph H 40%29.88 inHg

9:00 AM

Partly cloudy

52° 💧 None 💨 4 mph H 39%29.85 inHg

12:00 PM

Partly cloudy

61° 💧 None 💨 12 mph H 30%29.83 inHg

3:00 PM

Sunny

64° 💧 None 💨 14 mph H 21%29.71 inHg

6:00 PM

Mostly cloudy

62° 💧 None 💨 17 mph H 20%29.62 inHg

9:00 PM

Overcast night

57° 💧 None 💨 12 mph H 27%29.53 inHg

Sunday

12:00 AM

Partly cloudy night

43° 💧 None 💨 6 mph H 70%29.77 inHg

3:00 AM

Mostly clear night

35° 💧 None 💨 7 mph H 78%29.85 inHg

6:00 AM

Partly cloudy night

31° 💧 None 💨 4 mph H 82%30.00 inHg

9:00 AM

Mostly sunny

34° 💧 None 💨 5 mph H 66%30.06 inHg

12:00 PM

Sleet

44° 💧 None 💨 6 mph H 42%30.03 inHg

3:00 PM

Partly cloudy

49° 💧 None 💨 8 mph H 30%29.97 inHg

6:00 PM

Sunny

48° 💧 None 💨 5 mph H 31%29.97 inHg

9:00 PM

Clear night

38° 💧 None 💨 2 mph H 54%30.03 inHg

Monday

12:00 AM

Clear night

32° 💧 None 💨 5 mph H 71%30.09 inHg

6:00 AM

Clear night

33° 💧 None 💨 6 mph H 82%30.15 inHg

12:00 PM

Sunny

28° 💧 None 💨 3 mph H 88%30.15 inHg

6:00 PM

Sunny

49° 💧 None 💨 5 mph H 41%30.12 inHg

Tuesday

12:00 AM

Clear night

53° 💧 None 💨 6 mph H 34%30.03 inHg

6:00 AM

Clear night

36° 💧 None 💨 2 mph H 66%30.06 inHg

12:00 PM

Sunny

37° 💧 None 💨 2 mph H 37%30.03 inHg

6:00 PM

Sunny

57° 💧 None 💨 5 mph H 25%30.03 inHg

Wednesday

12:00 AM

Clear night

60° 💧 None 💨 6 mph H 21%29.94 inHg

6:00 AM

Clear night

45° 💧 None 💨 1 mph H 37%30.03 inHg

12:00 PM

Sunny

42° 💧 None 💨 1 mph H 35%30.09 inHg

6:00 PM

Sunny

62° 💧 None 💨 7 mph H 19%30.09 inHg

Thursday

12:00 AM

Mostly clear night

64° 💧 None 💨 9 mph H 15%30.03 inHg

6:00 AM

Clear night

47° 💧 None 💨 3 mph H 33%30.06 inHg

12:00 PM

Sunny

48° 💧 None 💨 3 mph H 38%30.12 inHg

6:00 PM

Sunny

70° 💧 None 💨 10 mph H 29%30.12 inHg

Friday

12:00 AM

Mostly cloudy night

70° 💧 None 💨 9 mph H 23%30.06 inHg

6:00 AM

Mostly cloudy night

58° 💧 None 💨 4 mph H 39%30.12 inHg

12:00 PM

Mostly cloudy

53° 💧 None 💨 3 mph H 60%30.06 inHg

6:00 PM

Overcast

65° 💧 None 💨 7 mph H 38%30.09 inHg

Saturday

12:00 AM

Clear night

64° 💧 None 💨 13 mph H 29%30.00 inHg

6:00 AM

Clear night

50° 💧 None 💨 3 mph H 39%30.03 inHg

12:00 PM

Sunny

41° 💧 None 💨 1 mph H 33%30.12 inHg

6:00 PM

Sunny

56° 💧 None 💨 7 mph H 11%30.12 inHg

Sunday

12:00 AM

Clear night

58° 💧 None 💨 4 mph H 14%30.03 inHg

6:00 AM

Clear night

39° 💧 None 💨 5 mph H 40%30.12 inHg

12:00 PM

Mostly sunny

33° 💧 None 💨 4 mph H 55%30.15 inHg

6:00 PM

Sunny

58° 💧 None 💨 2 mph H 20%30.15 inHg

Monday

12:00 AM

Clear night

60° 💧 None 💨 1 mph H 19%30.06 inHg

6:00 AM

Clear night

39° 💧 None 💨 4 mph H 42%30.21 inHg

12:00 PM

Sunny

36° 💧 None 💨 6 mph H 56%30.27 inHg

6:00 PM

Sunny

62° 💧 None 💨 3 mph H 18%30.27 inHg

Tuesday

12:00 AM

Clear night

64° 💧 None 💨 2 mph H 14%30.18 inHg

6:00 AM

Clear night

42° 💧 None 💨 2 mph H 34%30.27 inHg

12:00 PM

Sunny

41° 💧 None 💨 2 mph H 31%30.24 inHg

6:00 PM

Sunny

66° 💧 None 💨 4 mph H 16%30.21 inHg

Wednesday

12:00 AM

Clear night

68° 💧 None 💨 6 mph H 17%30.09 inHg

In Sun Valley and, more broadly, across the state of Idaho: Clear skies will dominate the morning, with temperatures starting out cool and ranging from 37 to 63 degrees Fahrenheit. Winds will be moderate from the west, blowing at up to 10 mph, with gusts reaching 15 mph. As the day progresses, expect the clear skies to persist, and temperatures to remain within the same cool range. Winds are anticipated to stay steady, maintaining a westerly direction at similar speeds. No precipitation is expected throughout the day, making for dry and stable conditions. It will be a calm and cool day overall, with light to moderate breezes and comfortable conditions for outdoor activities.

15-Day Weather Outlook for Sun Valley

TomorrowTomorrow

Sunny 70°/36° 💧 None 💨 8 mph

Thursday, Sep 10Thu Sep 10

Mostly sunny 71°/41° 💧 None 💨 10 mph

Friday, Sep 11Fri Sep 11

Mostly cloudy 67°/45° 💧 None 💨 10 mph

Saturday, Sep 12Sat Sep 12

Partly cloudy 64°/40° 💧 None 💨 14 mph

Sunday, Sep 13Sun Sep 13

Sleet 62°/31° 💧 0.024 in 💨 17 mph

Monday, Sep 14Mon Sep 14

Sunny 48°/28° 💧 None 💨 6 mph

Tuesday, Sep 15Tue Sep 15

Sunny 53°/36° 💧 None 💨 6 mph

Wednesday, Sep 16Wed Sep 16

Sunny 60°/42° 💧 None 💨 6 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 64°/47° 💧 None 💨 9 mph

Friday, Sep 18Fri Sep 18

Mostly cloudy 70°/53° 💧 0.004 in 💨 10 mph

Saturday, Sep 19Sat Sep 19

Overcast 65°/41° 💧 0.009 in 💨 13 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 58°/33° 💧 None 💨 7 mph

Monday, Sep 21Mon Sep 21

Sunny 60°/36° 💧 None 💨 6 mph

Tuesday, Sep 22Tue Sep 22

Sunny 64°/41° 💧 None 💨 3 mph

Wednesday, Sep 23Wed Sep 23

Sunny 68°/66° 💧 None 💨 6 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Sun Valley

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Sun Valley

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 10:00 AM

PM2.5 Fine particles Good 1,3µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 5,8µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 68,0µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 1,5µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Sun Valley

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 6,8High 🙂Fair

Tomorrow UV 6,7High 😐Moderate

Thursday UV 7,2High 😐Moderate

Friday UV 6,9High 😐Moderate

Saturday UV 4,0Moderate 🙂Fair

Sunday UV 2,0Low —Unavailable

Monday UV 4,0Moderate —Unavailable

Hourly UV index today

10:00 AMUV 2,1 11:00 AMUV 3,9 12:00 PMUV 5,6 1:00 PMUV 6,7 2:00 PMUV 6,8 3:00 PMUV 6,0 4:00 PMUV 4,3 5:00 PMUV 2,5 6:00 PMUV 1,1 7:00 PMUV 0,3

Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Sun Valley

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SUN VALLEY, IDAHO

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 5:00 AM–6:00 AM.

100/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 9:40 PM–5:30 AM

☁ Cloud cover 0% Real hourly forecast for the best viewing hour.

☾ Moonlight 6% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 82° high at the best hour.

✦ Estimated visible meteors 2–5/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min81%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

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Forecast data for Sun Valley were last refreshed today at 9:49 AM. The current forecast period extends through 10/09/2026 at 7:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.