March weather forecastUnion City, CA
March
Weather in March
The first month of the spring, March, is a refreshing month in Union City, California, with an average temperature ranging between min 45°F (7.2°C) and max 62.2°F (16.8°C).Temperature
The average high-temperature is a comfortable 62.2°F (16.8°C) in March, hardly different from the 59.7°F (15.4°C) recorded in February. Throughout March nights, Union City registers an average low-temperature of 45°F (7.2°C).Humidity
With an average relative humidity of 73%, March is the most humid month in Union City.Rainfall
In March, the rain falls for 7.3 days. Throughout March, 0.43" (11mm) of precipitation is accumulated. Throughout the year, in Union City, there are 38 rainfall days, and 2.13" (54mm) of precipitation is accumulated.Daylight
The average length of the day in March is 11h and 59min.On the first day of March, sunrise is at 6:38 am and sunset at 6:02 pm PST. On the last day of the month, 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 Union City, the average sunshine in March is 8h.UV index
In March, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 4 in March translates into these instructions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Union City, CA
- Average high temperature in March: 62.2°F
The warmest months (with the highest average high temperature) are July and August (80.1°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in March: 45°F
The months with the highest average low temperature are August and September (56.7°F).
The coldest month (with the lowest average low temperature) is December (43.7°F).
Average pressure in March
Union City, CA
- Average pressure in March: 30.07"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in March
Union City, CA
- Average wind speed in March: 6mph
The windiest month (with the highest average wind speed) is May (6.4mph).
The calmest months (with the lowest average wind speed) are October and November (4.7mph).
Average humidity in March
Union City, CA
- Average humidity in March: 73%
The month with the highest relative humidity is March (73%).
The months with the lowest relative humidity are September and October (62%).
Average rainfall in March
Union City, CA
- Average rainfall in March: 0.43"
The wettest month (with the highest rainfall) is February (0.47").
The driest months (with the least rainfall) are June, July and August (0").
Average rainfall days in March
Union City, CA
- Average rainfall days in March: 7.3 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is July (0.3 days).
Average daylight in March /
Average sunshine in March
Union City, 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 12min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in March
Union City, CA
- Average sunshine days in March: 22.3 days
The months with the most sunshine days are July and August (30.4 days).
The month with the least sunshine days is February (22.2 days).
Average UV index in March
Union City, CA
- Average UV index in March: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in March
Union City, CA
- Average cloud cover in March: 34
The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in March
Union City, 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).





