February weather forecast
Sunnyvale, CA

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The perfect blue sky, trees, buildings, and cute water fountain all reflected in the calm pool of water with birds in Sunnyvale, California
The perfect blue sky, trees, buildings, and cute water fountain all reflected in the calm pool of water with birds in Sunnyvale, California

Weather in February

As Sunnyvale transitions from January to February, there's not much difference in temperature, but rainfall increases noticeably, with an average measurement of 0.75" (19mm) throughout the month. The hours of daylight extend to nearly 11, providing an opportunity to make the most of the day. February also sees an increase in wind speed and gusts, adding a briskness to the air. However, the UV index remains moderate, warranting protective measures during sunny outdoor activities. Overall, the weather in February, while slightly more volatile, remains conducive for outdoor exploration.

Temperature

Sunnyvale marks the onset of February with an average high-temperature of a still moderate 59.7°F (15.4°C), a subtle shift from January's 58.3°F (14.6°C). February brings with it a nighttime average temperature of 44.2°F (6.8°C) in Sunnyvale.

Humidity

In Sunnyvale, the average relative humidity in February is 72%.

Rainfall

The wettest months are February and March, with an average 0.75" (19mm) of rainfall.

Daylight

The average length of the day in February is 10h and 50min.
On the first day of February, sunrise is at 7:11 am and sunset at 5:32 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:01 pm PST.

Sunshine

In Sunnyvale, California, the average sunshine in February is 6.4h.

UV index

The months with the lowest UV index in Sunnyvale are February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 3 during February translates into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

What is the temperature in February in Sunnyvale?

In Sunnyvale, 59.7°F (15.4°C) is the average high-temperature and 44.2°F (6.8°C) is the average low-temperature during February.

What is the average humidity in February in Sunnyvale?

In Sunnyvale, California, the average relative humidity in February is 72%.

What is the wettest month in Sunnyvale?

The wettest months in Sunnyvale, California, are February and March, with an average 0.75" (19mm) of rainfall.

How much does it rain in Sunnyvale in February?

In Sunnyvale, California, in February, it is raining for 5.4 days, with typically 0.75" (19mm) of accumulated precipitation.

What is the average length of the day in February in Sunnyvale?

The average day length in February in Sunnyvale is 10h and 50min.

When is the sunrise / sunset in February in Sunnyvale?

In February, on the first day of the month, sunrise is at 7:11 am and sunset at 5:32 pm. On the last day of the month, in Sunnyvale, California, sunrise is at 6:39 am and sunset at 6:01 pm PST.

How long on average sun shines in February in Sunnyvale?

In Sunnyvale, the average sunshine duration in February is 6.4h.

When is the lowest UV index in Sunnyvale?

February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Sunnyvale, California.

What is the UV index intensity in February in Sunnyvale?

The average daily maximum UV index in February in Sunnyvale, California, is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in February
Sunnyvale, CA

Average temperature in February - Sunnyvale, CA
  • Average high temperature in February: 59.7°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is December (56.8°F).

  • Average low temperature in February: 44.2°F

The month with the highest average low temperature is August (56.8°F).
The coldest months (with the lowest average low temperature) are February and December (44.2°F).

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Average pressure in February
Sunnyvale, CA

Average pressure in February - Sunnyvale, CA
  • Average pressure in February: 30.08"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June and September (29.92"Hg).

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Average wind speed in February
Sunnyvale, CA

Average wind speed in February - Sunnyvale, CA
  • Average wind speed in February: 5.7mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.6mph).

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Average humidity in February
Sunnyvale, CA

Average humidity in February - Sunnyvale, CA
  • Average humidity in February: 72%

The month with the highest relative humidity is March (73%).
The months with the lowest relative humidity are September and October (63%).

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Average rainfall in February
Sunnyvale, CA

Average rainfall in February - Sunnyvale, CA
  • Average rainfall in February: 0.75"

The wettest months (with the highest rainfall) are February and March (0.75").
The driest month (with the least rainfall) is July (0").

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Average rainfall days in February
Sunnyvale, CA

Average rainfall days in February - Sunnyvale, CA
  • Average rainfall days in February: 5.4 days

The month with the highest number of rainy days is March (9.6 days).
The month with the least rainy days is August (0.4 days).

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Average daylight in February /
Average sunshine in February
Sunnyvale, CA

Average daylight in February / Average sunshine in February - Sunnyvale, CA
  • Average daylight in February: 10h and 5min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in February: 6h and 2min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

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Average sunshine days in February
Sunnyvale, CA

Average sunshine days in February - Sunnyvale, CA
  • Average sunshine days in February: 21 days

The month with the most sunshine days is August (30.1 days).
The month with the least sunshine days is March (19.9 days).

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Average UV index in February
Sunnyvale, CA

Average UV index in February - Sunnyvale, CA
  • Average UV index in February: 3

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are February, November and December (UV index 3).

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Average cloud cover in February
Sunnyvale, CA

Average cloud cover in February - Sunnyvale, CA
  • Average cloud cover in February: 31

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 7).

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Average visibility in February
Sunnyvale, CA

Average visibility in February - Sunnyvale, CA
  • Average visibility in February: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Sunnyvale, California, USA

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