Contents
- Weather in February
- Frequently asked questions
- Average temperature in February
- Average pressure in February
- Average wind speed in February
- Average humidity in February
- Average rainfall in February
- Average rainfall days in February
- Average daylight in February
- Average sunshine in February
- Average sunshine days in February
- Average UV index in February
- Average cloud cover in February
- Average visibility in February
Weather in February
Temperature
In February, Portola Valley experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 56.7°F (13.7°C) in January to a still refreshing 58.3°F (14.6°C). During February, the temperature tends to dip to an average of 46.4°F (8°C) at night.Humidity
In Portola Valley, the average relative humidity in February is 74%.Rainfall
The month with the most rainfall is February, when the rain falls for 6.6 days and typically aggregates up to 0.98" (25mm) of precipitation.Daylight
In Portola Valley, the average length of the day in February is 10h and 50min.On the first day of February in Portola Valley, sunrise is at 7:12 am and sunset at 5:32 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:02 pm PST.
Sunshine
In Portola Valley, the average sunshine in February is 6.4h.UV index
February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 3 in February translates into these instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average February temperature in Portola Valley?
What is the average humidity in February in Portola Valley?
What is the wettest month in Portola Valley?
How many days does it rain in February in Portola Valley?
How many hours of daylight does Portola Valley have in February?
When are sunrise and sunset in February in Portola Valley?
How long on average sun shines in February in Portola Valley?
When is the lowest UV index in Portola Valley?
How high is the UV index in February in Portola Valley?
Average temperature in February
Portola Valley, CA
- Average high temperature in February: 58.3°F
The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is December (55.8°F).
- Average low temperature in February: 46.4°F
The months with the highest average low temperature are August and September (56.7°F).
The coldest months (with the lowest average low temperature) are January and February (46.4°F).
Average pressure in February
Portola Valley, CA
- Average pressure in February: 30.08"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in February
Portola Valley, CA
- Average wind speed in February: 7.3mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in February
Portola Valley, CA
- Average humidity in February: 74%
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is October (68%).
Average rainfall in February
Portola Valley, CA
- Average rainfall in February: 0.98"
The wettest month (with the highest rainfall) is February (0.98").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in February
Portola Valley, CA
- Average rainfall days in February: 6.6 days
The month with the highest number of rainy days is March (10.6 days).
The month with the least rainy days is June (0.9 days).
Average daylight in February /
Average sunshine in February
Portola Valley, 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 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in February
Portola Valley, CA
- Average sunshine days in February: 19.3 days
The months with the most sunshine days are June and July (26.3 days).
The month with the least sunshine days is March (18.3 days).
Average UV index in February
Portola Valley, CA
- Average UV index in February: 3
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in February
Portola Valley, 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 9).
Average visibility in February
Portola Valley, 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).
Portola Valley, California, USA
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