March weather forecastPort Costa, CA
March
Weather in March
The first month of the spring, March, is a comfortable month in Port Costa, California, with an average temperature fluctuating between 61.5°F (16.4°C) and 45°F (7.2°C).Temperature
The introduction of March sees an average high-temperature of an enjoyable 61.5°F (16.4°C), hardly deviating from February. Port Costa's average low-temperature for the month of March records at a frosty 45°F (7.2°C).Humidity
With an average relative humidity of 75%, March is the most humid month.Rainfall
In Port Costa, during March, the rain falls for 10.2 days and regularly aggregates up to 0.75" (19mm) of precipitation. Throughout the year, there are 56.9 rainfall days, and 4.88" (124mm) of precipitation is accumulated.Daylight
In March, the average length of the day is 11h and 59min.On the first day of the month, sunrise is at 6:39 am and sunset at 6:02 pm PST. On the last day of March, sunrise is at 6:53 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 7.7h.UV index
In Port Costa, the average daily maximum UV index in March is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In March, an average UV index of 4 transforms into the following instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. Minimize direct exposure to the Sun during midday when its radiation is at its peak. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Port Costa, CA
- Average high temperature in March: 61.5°F
The warmest months (with the highest average high temperature) are July and September (80.1°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in March: 45°F
The month with the highest average low temperature is August (56.5°F).
The coldest month (with the lowest average low temperature) is January (43°F).
Average pressure in March
Port Costa, CA
- Average pressure in March: 30.07"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in March
Port Costa, CA
- Average wind speed in March: 6mph
The windiest month (with the highest average wind speed) is May (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).
Average humidity in March
Port Costa, CA
- Average humidity in March: 75%
The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are September and October (60%).
Average rainfall in March
Port Costa, CA
- Average rainfall in March: 0.75"
The wettest month (with the highest rainfall) is February (1.14").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in March
Port Costa, CA
- Average rainfall days in March: 10.2 days
The month with the highest number of rainy days is March (10.2 days).
The month with the least rainy days is August (0.9 days).
Average daylight in March /
Average sunshine in March
Port Costa, CA
- Average daylight in March: 12h and 0min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in March: 7h and 42min
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 42min).
Average sunshine days in March
Port Costa, CA
- Average sunshine days in March: 18.8 days
The month with the most sunshine days is July (27.2 days).
The month with the least sunshine days is March (18.8 days).
Average UV index in March
Port Costa, 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
Port Costa, CA
- Average cloud cover in March: 37
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in March
Port Costa, 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).
