What is the weather in Sun Valley Lake right now?

Current weather in Sun Valley Lake is thunderstorm with light rain.

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

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

Is the weather forecast for Sun Valley Lake updated regularly?

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

Now · 1:33 PM

Sun Valley Lake Weather & Hourly Forecast

United States · Iowa · 50074

77°F

Light thunderstorms

Feels like: 78°F

💧 Humidity 76% 🌡 Pressure 30.00 inHg 💨 Wind 10 mph 👁 Visibility 3.3 mi ☁ Clouds 98% ☀️ UV index 8.1 · Very high 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Sun Valley Lake

Today

2:00 PM

Light thunderstorms

77° 💧 0.043 in 💨 10 mph H 76%30.00 inHg

5:00 PM

Partly cloudy

83° 💧 None 💨 13 mph H 62%29.94 inHg

8:00 PM

Mostly clear night

78° 💧 None 💨 11 mph H 66%29.97 inHg

11:00 PM

Mostly cloudy night

75° 💧 None 💨 12 mph H 61%30.00 inHg

Tomorrow

2:00 AM

Partly cloudy night

73° 💧 None 💨 13 mph H 62%29.97 inHg

5:00 AM

Overcast night

72° 💧 None 💨 11 mph H 67%30.00 inHg

8:00 AM

Overcast

74° 💧 None 💨 11 mph H 71%30.00 inHg

11:00 AM

Mostly sunny

85° 💧 None 💨 12 mph H 64%30.00 inHg

2:00 PM

Partly cloudy

93° 💧 None 💨 13 mph H 50%29.94 inHg

5:00 PM

Mostly sunny

94° 💧 None 💨 13 mph H 44%29.88 inHg

8:00 PM

Partly cloudy night

85° 💧 None 💨 6 mph H 61%29.91 inHg

11:00 PM

Mostly clear night

84° 💧 None 💨 12 mph H 59%29.94 inHg

Wednesday

2:00 AM

Mostly cloudy night

75° 💧 0.077 in 💨 13 mph H 87%29.97 inHg

5:00 AM

Light thunderstorms

72° 💧 0.327 in 💨 6 mph H 97%29.97 inHg

8:00 AM

Light rain

73° 💧 0.133 in 💨 7 mph H 94%30.00 inHg

11:00 AM

Light rain

74° 💧 0.105 in 💨 5 mph H 95%30.03 inHg

Today

2:00 PM

Light thunderstorms

77° 💧 0.032 in 💨 10 mph H 76%30.00 inHg

3:00 PM

Light rain

79° 💧 0.010 in 💨 11 mph H 71%29.97 inHg

4:00 PM

Mostly cloudy

82° 💧 0.000 in 💨 12 mph H 64%29.97 inHg

5:00 PM

Partly cloudy

83° 💧 None 💨 13 mph H 62%29.94 inHg

6:00 PM

Mostly sunny

83° 💧 None 💨 12 mph H 63%29.94 inHg

7:00 PM

Mostly sunny

80° 💧 None 💨 12 mph H 66%29.94 inHg

8:00 PM

Mostly clear night

78° 💧 None 💨 11 mph H 66%29.97 inHg

9:00 PM

Partly cloudy night

77° 💧 None 💨 11 mph H 65%29.97 inHg

10:00 PM

Mostly cloudy night

76° 💧 None 💨 12 mph H 63%30.00 inHg

11:00 PM

Mostly cloudy night

75° 💧 None 💨 12 mph H 61%30.00 inHg

Tomorrow

12:00 AM

Mostly cloudy night

74° 💧 None 💨 13 mph H 60%30.00 inHg

1:00 AM

Mostly cloudy night

73° 💧 None 💨 12 mph H 61%30.00 inHg

2:00 AM

Partly cloudy night

73° 💧 None 💨 13 mph H 62%29.97 inHg

3:00 AM

Partly cloudy night

72° 💧 None 💨 12 mph H 64%29.97 inHg

4:00 AM

Mostly cloudy night

72° 💧 None 💨 11 mph H 66%30.00 inHg

5:00 AM

Overcast night

72° 💧 None 💨 11 mph H 67%30.00 inHg

6:00 AM

Overcast night

72° 💧 None 💨 10 mph H 68%30.00 inHg

7:00 AM

Mostly cloudy

72° 💧 None 💨 10 mph H 70%30.00 inHg

8:00 AM

Overcast

74° 💧 None 💨 11 mph H 71%30.00 inHg

9:00 AM

Overcast

77° 💧 None 💨 11 mph H 71%30.00 inHg

10:00 AM

Mostly sunny

81° 💧 None 💨 11 mph H 68%30.00 inHg

11:00 AM

Mostly sunny

85° 💧 None 💨 12 mph H 64%30.00 inHg

12:00 PM

Sunny

89° 💧 None 💨 12 mph H 60%29.97 inHg

1:00 PM

Mostly sunny

91° 💧 None 💨 12 mph H 56%29.94 inHg

2:00 PM

Partly cloudy

93° 💧 None 💨 13 mph H 50%29.94 inHg

3:00 PM

Sunny

94° 💧 None 💨 13 mph H 46%29.91 inHg

4:00 PM

Sunny

95° 💧 None 💨 13 mph H 43%29.91 inHg

5:00 PM

Mostly sunny

94° 💧 None 💨 13 mph H 44%29.88 inHg

6:00 PM

Partly cloudy

93° 💧 None 💨 10 mph H 47%29.91 inHg

7:00 PM

Mostly cloudy

89° 💧 None 💨 5 mph H 56%29.91 inHg

8:00 PM

Partly cloudy night

85° 💧 None 💨 6 mph H 61%29.91 inHg

9:00 PM

Clear night

86° 💧 None 💨 13 mph H 57%29.91 inHg

10:00 PM

Mostly clear night

86° 💧 None 💨 13 mph H 55%29.94 inHg

11:00 PM

Mostly clear night

84° 💧 None 💨 12 mph H 59%29.94 inHg

Wednesday

12:00 AM

Clear night

84° 💧 None 💨 11 mph H 57%29.94 inHg

1:00 AM

Mostly clear night

82° 💧 None 💨 6 mph H 61%29.94 inHg

2:00 AM

Mostly cloudy night

75° 💧 0.001 in 💨 13 mph H 87%29.97 inHg

3:00 AM

Mostly clear night

74° 💧 0.003 in 💨 4 mph H 89%29.94 inHg

4:00 AM

Light thunderstorms

72° 💧 0.073 in 💨 14 mph H 95%30.00 inHg

5:00 AM

Light thunderstorms

72° 💧 0.020 in 💨 6 mph H 97%29.97 inHg

6:00 AM

Thunderstorms

72° 💧 0.237 in 💨 7 mph H 94%30.00 inHg

7:00 AM

Light rain

73° 💧 0.071 in 💨 6 mph H 94%30.00 inHg

8:00 AM

Light rain

73° 💧 0.011 in 💨 7 mph H 94%30.00 inHg

9:00 AM

Light rain

74° 💧 0.059 in 💨 4 mph H 93%30.00 inHg

10:00 AM

Light thunderstorms

74° 💧 0.064 in 💨 8 mph H 93%30.03 inHg

11:00 AM

Light rain

74° 💧 0.090 in 💨 5 mph H 95%30.03 inHg

12:00 PM

Light rain

75° 💧 0.013 in 💨 5 mph H 91%30.03 inHg

1:00 PM

Overcast

79° 💧 0.002 in 💨 4 mph H 79%30.03 inHg

2:00 PM

Light rain

80° 💧 0.006 in 💨 4 mph H 77%30.00 inHg

3:00 PM

Light rain

81° 💧 0.011 in 💨 4 mph H 74%29.97 inHg

4:00 PM

Light rain

80° 💧 0.021 in 💨 6 mph H 77%29.97 inHg

5:00 PM

Light rain

79° 💧 0.007 in 💨 7 mph H 80%29.97 inHg

6:00 PM

Mostly sunny

78° 💧 0.001 in 💨 7 mph H 82%29.97 inHg

7:00 PM

Light rain

77° 💧 0.007 in 💨 5 mph H 87%29.97 inHg

8:00 PM

Mostly clear night

75° 💧 0.003 in 💨 3 mph H 91%29.97 inHg

9:00 PM

Mostly cloudy night

74° 💧 0.003 in 💨 3 mph H 93%30.00 inHg

10:00 PM

Mostly clear night

74° 💧 0.000 in 💨 5 mph H 94%30.00 inHg

11:00 PM

Mostly clear night

72° 💧 None 💨 6 mph H 92%30.03 inHg

Thursday

12:00 AM

Clear night

70° 💧 None 💨 8 mph H 86%30.00 inHg

1:00 AM

Clear night

68° 💧 None 💨 8 mph H 80%30.00 inHg

2:00 AM

Clear night

67° 💧 None 💨 9 mph H 78%30.00 inHg

3:00 AM

Clear night

66° 💧 None 💨 7 mph H 81%30.03 inHg

4:00 AM

Clear night

65° 💧 None 💨 6 mph H 83%30.03 inHg

5:00 AM

Clear night

64° 💧 None 💨 7 mph H 83%30.06 inHg

6:00 AM

Clear night

63° 💧 None 💨 8 mph H 84%30.06 inHg

7:00 AM

Sunny

62° 💧 None 💨 6 mph H 86%30.06 inHg

10:00 AM

Mostly sunny

71° 💧 None 💨 6 mph H 74%30.06 inHg

1:00 PM

Partly cloudy

78° 💧 None 💨 7 mph H 50%30.03 inHg

4:00 PM

Sunny

80° 💧 None 💨 1 mph H 45%29.97 inHg

7:00 PM

Sunny

75° 💧 None 💨 3 mph H 64%29.94 inHg

10:00 PM

Clear night

68° 💧 None 💨 6 mph H 72%29.97 inHg

Friday

1:00 AM

Clear night

65° 💧 None 💨 8 mph H 72%29.97 inHg

4:00 AM

Clear night

64° 💧 None 💨 9 mph H 69%29.94 inHg

7:00 AM

Sunny

63° 💧 None 💨 10 mph H 73%29.91 inHg

10:00 AM

Sunny

73° 💧 None 💨 10 mph H 72%29.91 inHg

1:00 PM

Mostly sunny

83° 💧 None 💨 13 mph H 58%29.83 inHg

4:00 PM

Partly cloudy

83° 💧 None 💨 13 mph H 58%29.77 inHg

7:00 PM

Light rain

74° 💧 None 💨 10 mph H 92%29.77 inHg

10:00 PM

Mostly clear night

73° 💧 None 💨 10 mph H 96%29.77 inHg

Saturday

1:00 AM

Clear night

71° 💧 None 💨 9 mph H 96%29.80 inHg

4:00 AM

Light rain

68° 💧 None 💨 5 mph H 98%29.85 inHg

7:00 AM

Overcast

67° 💧 None 💨 4 mph H 98%29.91 inHg

10:00 AM

Overcast

66° 💧 None 💨 12 mph H 81%30.00 inHg

1:00 PM

Sunny

74° 💧 None 💨 11 mph H 54%30.03 inHg

4:00 PM

Sunny

75° 💧 None 💨 10 mph H 50%30.03 inHg

7:00 PM

Mostly sunny

69° 💧 None 💨 5 mph H 63%30.06 inHg

10:00 PM

Clear night

63° 💧 None 💨 4 mph H 80%30.09 inHg

Sunday

1:00 AM

Mostly clear night

60° 💧 None 💨 4 mph H 86%30.12 inHg

7:00 AM

Mostly cloudy

64° 💧 None 💨 7 mph H 74%30.09 inHg

1:00 PM

Overcast

64° 💧 None 💨 9 mph H 70%30.09 inHg

7:00 PM

Light thunderstorms

66° 💧 None 💨 10 mph H 93%30.06 inHg

Monday

1:00 AM

Light thunderstorms

66° 💧 None 💨 14 mph H 96%29.97 inHg

7:00 AM

Mostly cloudy

71° 💧 None 💨 10 mph H 98%29.94 inHg

1:00 PM

Sunny

73° 💧 None 💨 14 mph H 95%29.85 inHg

7:00 PM

Mostly sunny

90° 💧 None 💨 20 mph H 57%29.77 inHg

Tuesday

1:00 AM

Light rain

75° 💧 None 💨 11 mph H 92%29.80 inHg

7:00 AM

Mostly sunny

65° 💧 None 💨 11 mph H 73%30.00 inHg

1:00 PM

Sunny

58° 💧 None 💨 9 mph H 67%30.15 inHg

7:00 PM

Mostly sunny

68° 💧 None 💨 9 mph H 61%30.24 inHg

Wednesday

1:00 AM

Mostly clear night

66° 💧 None 💨 3 mph H 74%30.21 inHg

7:00 AM

Mostly sunny

58° 💧 None 💨 4 mph H 88%30.30 inHg

1:00 PM

Mostly sunny

55° 💧 None 💨 2 mph H 92%30.42 inHg

7:00 PM

Partly cloudy

70° 💧 None 💨 5 mph H 57%30.42 inHg

Thursday

1:00 AM

Overcast night

66° 💧 None 💨 3 mph H 75%30.36 inHg

7:00 AM

Overcast

62° 💧 None 💨 3 mph H 83%30.42 inHg

1:00 PM

Overcast

59° 💧 None 💨 7 mph H 87%30.42 inHg

7:00 PM

Overcast

62° 💧 None 💨 3 mph H 80%30.45 inHg

Friday

1:00 AM

Clear night

63° 💧 None 💨 3 mph H 80%30.36 inHg

7:00 AM

Mostly cloudy

56° 💧 None 💨 4 mph H 92%30.36 inHg

1:00 PM

Sunny

52° 💧 None 💨 1 mph H 94%30.36 inHg

7:00 PM

Sunny

70° 💧 None 💨 2 mph H 64%30.33 inHg

Saturday

1:00 AM

Mostly cloudy night

68° 💧 None 💨 3 mph H 72%30.21 inHg

7:00 AM

Overcast

62° 💧 None 💨 1 mph H 80%30.21 inHg

1:00 PM

Mostly sunny

60° 💧 None 💨 5 mph H 81%30.21 inHg

7:00 PM

Partly cloudy

74° 💧 None 💨 2 mph H 48%30.18 inHg

Sunday

1:00 AM

Clear night

68° 💧 None 💨 3 mph H 67%30.06 inHg

7:00 AM

Mostly clear night

60° 💧 None 💨 6 mph H 76%30.06 inHg

1:00 PM

Overcast

58° 💧 None 💨 6 mph H 80%30.03 inHg

7:00 PM

Overcast

74° 💧 None 💨 9 mph H 52%29.97 inHg

Monday

1:00 AM

Overcast night

69° 💧 None 💨 7 mph H 66%29.91 inHg

7:00 AM

Overcast night

66° 💧 None 💨 6 mph H 90%29.94 inHg

1:00 PM

Overcast

64° 💧 None 💨 4 mph H 98%29.97 inHg

7:00 PM

Mostly sunny

75° 💧 None 💨 7 mph H 71%30.00 inHg

Tuesday

1:00 AM

Mostly clear night

69° 💧 None 💨 6 mph H 80%29.97 inHg

In Sun Valley Lake and, more broadly, across the state of Iowa: Expect mostly cloudy skies for the rest of the day, with temperatures ranging from 69 to 76 degrees Fahrenheit. Winds will be coming from the southeast at around 10 to 18 mph, with gusts reaching up to 38 mph, so some breezy conditions are likely. No precipitation is forecasted, so the weather should remain dry throughout the afternoon. The mild to warm temperatures combined with the moderate winds could make for a comfortable yet slightly breezy afternoon. Be prepared for the gusty winds if you're heading outdoors, especially in open areas. Overall, it looks like a pleasant day with mostly cloudy skies and no significant weather disruptions.

15-Day Weather Outlook for Sun Valley Lake

TomorrowTomorrow

Mostly sunny 95°/72° 💧 None 💨 13 mph

Wednesday, Sep 9Wed Sep 9

Light thunderstorms 89°/72° 💧 None 💨 14 mph

Thursday, Sep 10Thu Sep 10

Mostly sunny 80°/62° 💧 None 💨 9 mph

Friday, Sep 11Fri Sep 11

Partly cloudy 83°/63° 💧 0.018 in 💨 13 mph

Saturday, Sep 12Sat Sep 12

Light rain 75°/66° 💧 0.239 in 💨 12 mph

Sunday, Sep 13Sun Sep 13

Mostly sunny 69°/60° 💧 0.059 in 💨 9 mph

Monday, Sep 14Mon Sep 14

Light thunderstorms 73°/66° 💧 4.368 in 💨 14 mph

Tuesday, Sep 15Tue Sep 15

Light rain 90°/58° 💧 0.133 in 💨 20 mph

Wednesday, Sep 16Wed Sep 16

Mostly sunny 68°/55° 💧 None 💨 9 mph

Thursday, Sep 17Thu Sep 17

Overcast 70°/59° 💧 None 💨 7 mph

Friday, Sep 18Fri Sep 18

Overcast 63°/52° 💧 0.041 in 💨 4 mph

Saturday, Sep 19Sat Sep 19

Mostly cloudy 70°/60° 💧 None 💨 5 mph

Sunday, Sep 20Sun Sep 20

Partly cloudy 74°/58° 💧 None 💨 6 mph

Monday, Sep 21Mon Sep 21

Overcast 74°/64° 💧 0.151 in 💨 9 mph

Tuesday, Sep 22Tue Sep 22

Mostly sunny 75°/69° 💧 0.016 in 💨 7 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Sun Valley Lake

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Sun Valley Lake

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 2:00 PM

PM2.5 Fine particles Good 8,4µg/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 8,9µg/m³

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

O₃ Ozone Fair 90,8µg/m³

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

NO₂ Nitrogen dioxide Good 1,0µg/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 Lake

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 8,1Very high 🙂Fair

Tomorrow UV 7,7High 🙂Fair

Wednesday UV 7,4High 🙂Fair

Thursday UV 6,8High 🙂Fair

Friday UV 8,0Very high 🙂Fair

Saturday UV 8,0Very high —Unavailable

Sunday UV 9,0Very high —Unavailable

Hourly UV index today

2:00 PMUV 7,7 3:00 PMUV 6,2 4:00 PMUV 4,2 5:00 PMUV 2,0 6:00 PMUV 0,7 7:00 PMUV 0,1

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

Very high UV risk

Use SPF 50+ sunscreen, a hat and sunglasses. Seek shade and limit exposure around midday.

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.

Best in the morning or late in the day

For walking, running or cycling, prefer the early morning or late afternoon.

WIND OUTLOOK

Hourly Wind Forecast for Sun Valley Lake

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SUN VALLEY LAKE, IOWA

Tonight's Stargazing & Shooting Stars

Good observing conditions. Best local viewing window: 2:00 AM–3:00 AM.

70/100Best-hour score

BEST TIME TONIGHT 2:00 AM–3:00 AM Astronomical darkness: 9:14 PM–5:15 AM

☁ Cloud cover 42% Real hourly forecast for the best viewing hour.

☾ Moonlight 14% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 53° high at the best hour.

✦ Estimated visible meteors 1–3/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min61%

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.

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Forecast data for Sun Valley Lake were last refreshed today at 1:33 PM. The current forecast period extends through 09/09/2026 at 11:00 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.