Contents
- Weather in March
- Frequently asked questions
- Average temperature in March
- Average pressure in March
- Average wind speed in March
- Average humidity in March
- Average rainfall in March
- Average rainfall days in March
- Average daylight in March
- Average sunshine in March
- Average sunshine days in March
- Average UV index in March
- Average cloud cover in March
- Average visibility in March
Weather in March
Temperature
Portola Valley's transition from February to March introduces an average high-temperature of a still refreshing 59.5°F (15.3°C), marking an insignificant variation from the 58.3°F (14.6°C). The average low-temperature of 46.9°F (8.3°C) is witnessed during March.Humidity
March is the most humid month, with an average relative humidity of 76%.Rainfall
In Portola Valley, during March, the rain falls for 10.6 days and regularly aggregates up to 0.83" (21mm) of precipitation. In Portola Valley, California, during the entire year, the rain falls for 57.5 days and collects up to 4.76" (121mm) of precipitation.Daylight
In March, the average length of the day is 11h and 59min.On the first day of the month, sunrise is at 6:38 am and sunset at 6:03 pm PST. On the last day of March, sunrise is at 6:54 am and sunset at 7:31 pm PDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from PDT to PST.
Sunshine
The average sunshine in March is 7.9h.UV index
In March, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 4 during March translates into the following directions:
Take precautions - Protection against sun damage is advised. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average March temperature in Portola Valley?
What is the most humid month in Portola Valley?
What is the average humidity in March in Portola Valley?
How many days does it rain in March in Portola Valley?
What is the average length of the day in March in Portola Valley?
What time are sunrise and sunset in March in Portola Valley?
When does Daylight Saving Time (DST) start in March in Portola Valley?
How long on average sun shines in March in Portola Valley?
What is the UV index intensity in March in Portola Valley?
Average temperature in March
Portola Valley, CA
- Average high temperature in March: 59.5°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 March: 46.9°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 March
Portola Valley, CA
- Average pressure in March: 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 March
Portola Valley, CA
- Average wind speed in March: 7.4mph
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 March
Portola Valley, CA
- Average humidity in March: 76%
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is October (68%).
Average rainfall in March
Portola Valley, CA
- Average rainfall in March: 0.83"
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 March
Portola Valley, CA
- Average rainfall days in March: 10.6 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 March /
Average sunshine in March
Portola Valley, CA
- Average daylight in March: 12h and 0min
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 March: 7h and 5min
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 March
Portola Valley, CA
- Average sunshine days in March: 18.3 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 March
Portola Valley, CA
- Average UV index in March: 4
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 March
Portola Valley, CA
- Average cloud cover in March: 35
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 March
Portola Valley, CA
- Average visibility in March: 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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