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
The arrival of March brings an average high-temperature of an enjoyable 61.9°F (16.6°C), subtly diverging from February's 59.5°F (15.3°C). Throughout the month of March, Castro Valley expects an average low of 45°F (7.2°C).Humidity
March is the most humid month, with an average relative humidity of 74%.Rainfall
In Castro Valley, California, in March, during 12.4 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. In Castro Valley, during the entire year, the rain falls for 69.2 days and collects up to 11.1" (282mm) of precipitation.Daylight
In Castro Valley, the average length of the day in March is 11h and 59min.On the first day of the month, sunrise is at 6:38 am and sunset at 6:02 pm PST. On the last day of March, in Castro Valley, sunrise is at 6:53 am and sunset at 7:30 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
In Castro Valley, California, the average sunshine in March is 8h.UV index
In March, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In March, a daily maximum UV index of 4 leads to the following instructions:
Undertake precautions - It is suggested to shield oneself from sunburn. Direct Sun exposure should be minimized especially during midday when radiation is most intense. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average March temperature in Castro Valley?
What is the most humid month in Castro Valley?
What is the average humidity in March in Castro Valley?
How much does it rain in Castro Valley in March?
What is the average length of the day in March in Castro Valley?
When are sunrise and sunset in March in Castro Valley?
When does Daylight Saving Time (DST) start in March in Castro Valley?
How many hours of sunshine does Castro Valley have in March?
How high is the UV index in March in Castro Valley?
Average temperature in March
Castro Valley, CA
- Average high temperature in March: 61.9°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is December (55.9°F).
- Average low temperature in March: 45°F
The month with the highest average low temperature is August (56.5°F).
The coldest months (with the lowest average low temperature) are January and December (43.7°F).
Average pressure in March
Castro Valley, CA
- Average pressure in March: 30.07"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in March
Castro Valley, CA
- Average wind speed in March: 6mph
The windiest month (with the highest average wind speed) is May (6.6mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).
Average humidity in March
Castro Valley, CA
- Average humidity in March: 74%
The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (61%).
Average rainfall in March
Castro Valley, CA
- Average rainfall in March: 1.81"
The wettest month (with the highest rainfall) is February (2.28").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in March
Castro Valley, CA
- Average rainfall days in March: 12.4 days
The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is August (0.9 days).
Average daylight in March /
Average sunshine in March
Castro 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: 8h and 0min
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).
Average sunshine days in March
Castro Valley, CA
- Average sunshine days in March: 17.3 days
The month with the most sunshine days is August (28.9 days).
The month with the least sunshine days is March (17.3 days).
Average UV index in March
Castro Valley, CA
- Average UV index in March: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in March
Castro Valley, CA
- Average cloud cover in March: 34
The months with the most cloud cover are March and December (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in March
Castro 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).
Castro Valley, California, USA
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