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Current weather in Sunnyvale is clear sky.

Where can I find the hourly weather forecast for Sunnyvale?

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

Is the weather forecast for Sunnyvale updated regularly?

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

Now · 7:59 PM

Sunnyvale Weather & Hourly Forecast

United States · California · 94087

65°F

Clear night

Feels like: 64°F

💧 Humidity 70% 🌡 Pressure 29.94 inHg 💨 Wind 4 mph 👁 Visibility 17.6 mi ☁ Clouds 2% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:54 AM 🌇 Sunset 7:06 PM

Hourly Forecast for Sunnyvale

Today

8:00 PM

Clear night

65° 💧 None 💨 4 mph H 70%29.94 inHg

11:00 PM

Clear night

61° 💧 None 💨 0 mph H 80%29.94 inHg

Tomorrow

2:00 AM

Clear night

58° 💧 None 💨 1 mph H 89%29.94 inHg

5:00 AM

Partly cloudy night

55° 💧 None 💨 1 mph H 95%29.91 inHg

8:00 AM

Mostly cloudy

56° 💧 None 💨 1 mph H 94%29.94 inHg

11:00 AM

Sunny

69° 💧 None 💨 2 mph H 59%29.94 inHg

2:00 PM

Sunny

81° 💧 None 💨 4 mph H 37%29.88 inHg

5:00 PM

Sunny

82° 💧 None 💨 6 mph H 40%29.85 inHg

8:00 PM

Clear night

72° 💧 None 💨 3 mph H 56%29.85 inHg

11:00 PM

Clear night

67° 💧 None 💨 0 mph H 67%29.88 inHg

Thursday

2:00 AM

Clear night

64° 💧 None 💨 0 mph H 71%29.85 inHg

5:00 AM

Clear night

61° 💧 None 💨 0 mph H 81%29.85 inHg

8:00 AM

Sunny

61° 💧 None 💨 3 mph H 79%29.88 inHg

11:00 AM

Sunny

75° 💧 None 💨 2 mph H 46%29.88 inHg

2:00 PM

Mostly cloudy

83° 💧 None 💨 8 mph H 36%29.88 inHg

5:00 PM

Overcast

77° 💧 None 💨 8 mph H 38%29.88 inHg

Today

8:00 PM

Clear night

65° 💧 None 💨 4 mph H 70%29.94 inHg

9:00 PM

Clear night

63° 💧 None 💨 2 mph H 74%29.94 inHg

10:00 PM

Clear night

62° 💧 None 💨 1 mph H 78%29.94 inHg

11:00 PM

Clear night

61° 💧 None 💨 0 mph H 80%29.94 inHg

Tomorrow

12:00 AM

Clear night

60° 💧 None 💨 2 mph H 84%29.94 inHg

1:00 AM

Clear night

59° 💧 None 💨 1 mph H 87%29.94 inHg

2:00 AM

Clear night

58° 💧 None 💨 1 mph H 89%29.94 inHg

3:00 AM

Clear night

57° 💧 None 💨 0 mph H 92%29.94 inHg

4:00 AM

Clear night

56° 💧 None 💨 0 mph H 92%29.91 inHg

5:00 AM

Partly cloudy night

55° 💧 None 💨 1 mph H 95%29.91 inHg

6:00 AM

Clear night

55° 💧 None 💨 0 mph H 96%29.91 inHg

7:00 AM

Partly cloudy

54° 💧 None 💨 0 mph H 96%29.91 inHg

8:00 AM

Mostly cloudy

56° 💧 None 💨 1 mph H 94%29.94 inHg

9:00 AM

Partly cloudy

59° 💧 None 💨 1 mph H 86%29.94 inHg

10:00 AM

Mostly sunny

64° 💧 None 💨 1 mph H 72%29.94 inHg

11:00 AM

Sunny

69° 💧 None 💨 2 mph H 59%29.94 inHg

12:00 PM

Sunny

74° 💧 None 💨 3 mph H 49%29.91 inHg

1:00 PM

Sunny

78° 💧 None 💨 3 mph H 42%29.91 inHg

2:00 PM

Sunny

81° 💧 None 💨 4 mph H 37%29.88 inHg

3:00 PM

Sunny

83° 💧 None 💨 5 mph H 35%29.85 inHg

4:00 PM

Sunny

84° 💧 None 💨 6 mph H 36%29.85 inHg

5:00 PM

Sunny

82° 💧 None 💨 6 mph H 40%29.85 inHg

6:00 PM

Sunny

78° 💧 None 💨 6 mph H 45%29.85 inHg

7:00 PM

Sunny

74° 💧 None 💨 5 mph H 51%29.85 inHg

8:00 PM

Clear night

72° 💧 None 💨 3 mph H 56%29.85 inHg

9:00 PM

Clear night

69° 💧 None 💨 2 mph H 61%29.88 inHg

10:00 PM

Clear night

68° 💧 None 💨 0 mph H 65%29.88 inHg

11:00 PM

Clear night

67° 💧 None 💨 0 mph H 67%29.88 inHg

Thursday

12:00 AM

Clear night

66° 💧 None 💨 0 mph H 69%29.88 inHg

1:00 AM

Clear night

65° 💧 None 💨 0 mph H 70%29.85 inHg

2:00 AM

Clear night

64° 💧 None 💨 0 mph H 71%29.85 inHg

3:00 AM

Clear night

63° 💧 None 💨 1 mph H 73%29.85 inHg

4:00 AM

Clear night

62° 💧 None 💨 3 mph H 79%29.85 inHg

5:00 AM

Clear night

61° 💧 None 💨 0 mph H 81%29.85 inHg

6:00 AM

Clear night

60° 💧 None 💨 2 mph H 81%29.85 inHg

7:00 AM

Sunny

59° 💧 None 💨 3 mph H 83%29.88 inHg

8:00 AM

Sunny

61° 💧 None 💨 3 mph H 79%29.88 inHg

9:00 AM

Sunny

64° 💧 None 💨 2 mph H 71%29.88 inHg

10:00 AM

Sunny

69° 💧 None 💨 2 mph H 58%29.88 inHg

11:00 AM

Sunny

75° 💧 None 💨 2 mph H 46%29.88 inHg

12:00 PM

Sunny

80° 💧 None 💨 3 mph H 39%29.88 inHg

1:00 PM

Sunny

82° 💧 None 💨 6 mph H 35%29.88 inHg

2:00 PM

Mostly cloudy

83° 💧 None 💨 8 mph H 36%29.88 inHg

3:00 PM

Overcast

82° 💧 None 💨 9 mph H 37%29.85 inHg

4:00 PM

Overcast

79° 💧 None 💨 9 mph H 39%29.88 inHg

5:00 PM

Overcast

77° 💧 None 💨 8 mph H 38%29.88 inHg

6:00 PM

Overcast

73° 💧 None 💨 6 mph H 43%29.88 inHg

7:00 PM

Mostly cloudy

70° 💧 None 💨 5 mph H 48%29.91 inHg

8:00 PM

Partly cloudy night

68° 💧 None 💨 4 mph H 52%29.91 inHg

9:00 PM

Mostly cloudy night

67° 💧 None 💨 2 mph H 55%29.91 inHg

10:00 PM

Mostly cloudy night

66° 💧 None 💨 2 mph H 55%29.91 inHg

11:00 PM

Mostly cloudy night

65° 💧 None 💨 2 mph H 56%29.94 inHg

Friday

12:00 AM

Overcast night

64° 💧 None 💨 0 mph H 58%29.94 inHg

1:00 AM

Overcast night

64° 💧 None 💨 0 mph H 57%29.94 inHg

2:00 AM

Overcast night

63° 💧 None 💨 2 mph H 57%29.94 inHg

3:00 AM

Partly cloudy night

62° 💧 None 💨 3 mph H 67%29.94 inHg

4:00 AM

Mostly cloudy night

62° 💧 None 💨 3 mph H 78%29.94 inHg

5:00 AM

Overcast night

62° 💧 None 💨 2 mph H 85%29.97 inHg

2:00 PM

Sunny

74° 💧 None 💨 9 mph H 49%30.00 inHg

5:00 PM

Sunny

70° 💧 None 💨 7 mph H 54%29.97 inHg

8:00 PM

Clear night

64° 💧 None 💨 2 mph H 66%29.94 inHg

11:00 PM

Clear night

61° 💧 None 💨 2 mph H 72%29.94 inHg

Saturday

2:00 AM

Clear night

57° 💧 None 💨 2 mph H 85%29.94 inHg

5:00 AM

Clear night

55° 💧 None 💨 2 mph H 91%29.91 inHg

8:00 AM

Sunny

55° 💧 None 💨 1 mph H 92%29.94 inHg

11:00 AM

Sunny

66° 💧 None 💨 2 mph H 57%29.94 inHg

2:00 PM

Mostly sunny

74° 💧 None 💨 7 mph H 41%29.88 inHg

5:00 PM

Overcast

70° 💧 None 💨 8 mph H 49%29.88 inHg

8:00 PM

Mostly cloudy night

62° 💧 None 💨 5 mph H 74%29.91 inHg

11:00 PM

Partly cloudy night

58° 💧 None 💨 2 mph H 86%29.94 inHg

Sunday

2:00 AM

Partly cloudy night

55° 💧 None 💨 2 mph H 96%29.91 inHg

5:00 AM

Mostly cloudy night

53° 💧 None 💨 0 mph H 100%29.91 inHg

8:00 AM

Mostly sunny

54° 💧 None 💨 2 mph H 96%29.94 inHg

11:00 AM

Sunny

65° 💧 None 💨 2 mph H 56%29.97 inHg

2:00 PM

Sunny

74° 💧 None 💨 6 mph H 42%29.91 inHg

5:00 PM

Sunny

73° 💧 None 💨 7 mph H 43%29.88 inHg

8:00 PM

Clear night

63° 💧 None 💨 6 mph H 69%29.91 inHg

11:00 PM

Clear night

59° 💧 None 💨 1 mph H 77%29.94 inHg

Monday

2:00 AM

Clear night

57° 💧 None 💨 0 mph H 78%29.91 inHg

5:00 AM

Clear night

54° 💧 None 💨 1 mph H 86%29.88 inHg

8:00 AM

Mostly sunny

54° 💧 None 💨 1 mph H 88%29.91 inHg

11:00 AM

Sunny

68° 💧 None 💨 3 mph H 56%29.91 inHg

5:00 PM

Sunny

65° 💧 None 💨 2 mph H 58%29.91 inHg

11:00 PM

Clear night

70° 💧 None 💨 8 mph H 50%29.85 inHg

Tuesday

5:00 AM

Clear night

58° 💧 None 💨 2 mph H 80%29.85 inHg

11:00 AM

Sunny

53° 💧 None 💨 0 mph H 94%29.85 inHg

5:00 PM

Sunny

66° 💧 None 💨 2 mph H 53%29.85 inHg

11:00 PM

Clear night

71° 💧 None 💨 7 mph H 39%29.80 inHg

Wednesday

5:00 AM

Clear night

59° 💧 None 💨 2 mph H 85%29.83 inHg

11:00 AM

Mostly sunny

55° 💧 None 💨 2 mph H 95%29.83 inHg

5:00 PM

Mostly sunny

67° 💧 None 💨 5 mph H 66%29.88 inHg

11:00 PM

Clear night

73° 💧 None 💨 8 mph H 47%29.80 inHg

Thursday

5:00 AM

Clear night

60° 💧 None 💨 2 mph H 74%29.83 inHg

11:00 AM

Sunny

54° 💧 None 💨 2 mph H 80%29.80 inHg

5:00 PM

Sunny

78° 💧 None 💨 4 mph H 14%29.85 inHg

11:00 PM

Clear night

81° 💧 None 💨 9 mph H 18%29.77 inHg

Friday

5:00 AM

Clear night

65° 💧 None 💨 0 mph H 43%29.83 inHg

11:00 AM

Sunny

61° 💧 None 💨 0 mph H 43%29.80 inHg

5:00 PM

Sunny

79° 💧 None 💨 3 mph H 19%29.85 inHg

11:00 PM

Clear night

86° 💧 None 💨 7 mph H 16%29.77 inHg

Saturday

5:00 AM

Clear night

68° 💧 None 💨 0 mph H 44%29.80 inHg

11:00 AM

Sunny

63° 💧 None 💨 0 mph H 50%29.80 inHg

5:00 PM

Sunny

79° 💧 None 💨 2 mph H 24%29.83 inHg

11:00 PM

Clear night

89° 💧 None 💨 6 mph H 15%29.71 inHg

Sunday

5:00 AM

Clear night

68° 💧 None 💨 2 mph H 42%29.77 inHg

11:00 AM

Sunny

58° 💧 None 💨 2 mph H 74%29.74 inHg

5:00 PM

Sunny

69° 💧 None 💨 3 mph H 53%29.80 inHg

11:00 PM

Clear night

70° 💧 None 💨 7 mph H 51%29.74 inHg

Monday

5:00 AM

Partly cloudy night

59° 💧 None 💨 2 mph H 79%29.77 inHg

11:00 AM

Mostly cloudy

53° 💧 None 💨 1 mph H 99%29.74 inHg

5:00 PM

Sunny

66° 💧 None 💨 2 mph H 55%29.77 inHg

11:00 PM

Clear night

71° 💧 None 💨 8 mph H 43%29.74 inHg

Tuesday

5:00 AM

Clear night

58° 💧 None 💨 1 mph H 70%29.77 inHg

11:00 AM

Sunny

53° 💧 None 💨 2 mph H 86%29.80 inHg

5:00 PM

Sunny

75° 💧 None 💨 4 mph H 15%29.83 inHg

11:00 PM

Clear night

81° 💧 None 💨 8 mph H 13%29.77 inHg

Wednesday

5:00 AM

Clear night

63° 💧 None 💨 0 mph H 43%29.83 inHg

11:00 AM

Sunny

58° 💧 None 💨 1 mph H 37%29.85 inHg

In Sunnyvale and, more broadly, across the state of California: Tonight, expect mostly cloudy skies with mild to warm temperatures ranging from 73 to 80 degrees Fahrenheit. Winds will be light, coming from the west at around 9 mph, with occasional gusts reaching up to 16 mph. No precipitation is forecast for the evening and the early night hours, so outdoor plans should be comfortable. Temperatures may gradually cool into the lower 70s later in the night, but overall, conditions will remain mild. The wind remains gentle, providing a slight breeze without causing concern. Overall, it should be a pleasant evening with no weather-related disruptions.

15-Day Weather Outlook for Sunnyvale

TomorrowTomorrow

Partly cloudy 84°/54° 💧 None 💨 6 mph

Thursday, Sep 24Thu Sep 24

Mostly cloudy 83°/59° 💧 None 💨 9 mph

Friday, Sep 25Fri Sep 25

Overcast 73°/60° 💧 0.001 in 💨 8 mph

Saturday, Sep 26Sat Sep 26

Partly cloudy 76°/55° 💧 None 💨 9 mph

Sunday, Sep 27Sun Sep 27

Partly cloudy 72°/54° 💧 None 💨 9 mph

Monday, Sep 28Mon Sep 28

Sunny 70°/52° 💧 None 💨 8 mph

Tuesday, Sep 29Tue Sep 29

Sunny 71°/53° 💧 None 💨 7 mph

Wednesday, Sep 30Wed Sep 30

Mostly sunny 73°/55° 💧 None 💨 8 mph

Thursday, Oct 1Thu Oct 1

Sunny 81°/54° 💧 None 💨 9 mph

Friday, Oct 2Fri Oct 2

Sunny 86°/61° 💧 None 💨 7 mph

Saturday, Oct 3Sat Oct 3

Sunny 89°/63° 💧 None 💨 6 mph

Sunday, Oct 4Sun Oct 4

Partly cloudy 70°/58° 💧 None 💨 7 mph

Monday, Oct 5Mon Oct 5

Mostly cloudy 71°/53° 💧 None 💨 8 mph

Tuesday, Oct 6Tue Oct 6

Sunny 81°/53° 💧 None 💨 8 mph

Wednesday, Oct 7Wed Oct 7

Sunny 58°/58° 💧 None 💨 1 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Sunnyvale

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Sunnyvale

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 8:00 PM

PM2.5 Fine particles Good 4,3µg/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 Fair 20,0µg/m³

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

O₃ Ozone Fair 80,2µg/m³

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

NO₂ Nitrogen dioxide Good 0,5µg/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 Sunnyvale

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 6,7High 🙂Fair

Tomorrow UV 6,9High 🙂Fair

Thursday UV 6,4High 🙂Fair

Friday UV 6,5High 🙂Fair

Saturday UV 6,3High 🙂Fair

Sunday UV 6,0High —Unavailable

Monday UV 6,0High —Unavailable

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 Sunnyvale

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SUNNYVALE, CALIFORNIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 4:00 AM–5:00 AM.

96/100Best-hour score

BEST TIME TONIGHT 4:00 AM–5:00 AM Astronomical darkness: 8:32 PM–5:29 AM

☁ Cloud cover 1% Real hourly forecast for the best viewing hour.

☾ Moonlight 89% Waxing Gibbous · Moon below the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 67° high at the best hour.

✦ Estimated visible meteors 1–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min73%

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

SEP 20–NOV 20

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

ACTIVE NOW

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

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% 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 Sunnyvale were last refreshed today at 7:59 PM. The current forecast period extends through 24/09/2026 at 5:00 PM. 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.