March weather forecastSunnyvale, CA
March
Weather in March
March heralds the arrival of Spring in Sunnyvale, with a substantial increase in daylight hours to 12 and a consequent increase in average sunshine hours. Despite the increased daylight, the temperatures remain relatively stable, indicating a gradual transition from Winter to Spring. Notably, there's a surge in rainfall days from 5.4 in February to 9.6 in March. This change is a positive affirmation of thriving flora and fauna after the mild winter. The weather conditions in March offer an amalgamation of sunny and rainy days, creating a scenery of blooming beauty.Temperature
Upon the beginning of March, Sunnyvale's high-temperatures register at a comfortable 62.2°F (16.8°C), closely mirroring the preceding month. Sunnyvale records an average nighttime low-temperature of 45.1°F (7.3°C) throughout March.Humidity
With an average relative humidity of 73%, March is the most humid month in Sunnyvale.Rainfall
The wettest months are February and March, with an average 0.75" (19mm) of rainfall.Daylight
The average length of the day in March is 11h and 59min.On the first day of the month, sunrise is at 6:37 am and sunset at 6:02 pm PST. On the last day of March, 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 March, the average sunshine 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 moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The average daily UV index of 4 in March transforms into the following instructions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Sunnyvale, CA
- Average high temperature in March: 62.2°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is December (56.8°F).
- Average low temperature in March: 45.1°F
The month with the highest average low temperature is August (56.8°F).
The coldest months (with the lowest average low temperature) are February and December (44.2°F).
Average pressure in March
Sunnyvale, CA
- Average pressure in March: 30.08"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June and September (29.92"Hg).
Average wind speed in March
Sunnyvale, CA
- Average wind speed in March: 5.9mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.6mph).
Average humidity in March
Sunnyvale, 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 (63%).
Average rainfall in March
Sunnyvale, CA
- Average rainfall in March: 0.75"
The wettest months (with the highest rainfall) are February and March (0.75").
The driest month (with the least rainfall) is July (0").
Average rainfall days in March
Sunnyvale, CA
- Average rainfall days in March: 9.6 days
The month with the highest number of rainy days is March (9.6 days).
The month with the least rainy days is August (0.4 days).
Average daylight in March /
Average sunshine in March
Sunnyvale, 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 54min
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
Sunnyvale, CA
- Average sunshine days in March: 19.9 days
The month with the most sunshine days is August (30.1 days).
The month with the least sunshine days is March (19.9 days).
Average UV index in March
Sunnyvale, 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 February, November and December (UV index 3).
Average cloud cover in March
Sunnyvale, 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 7).
Average visibility in March
Sunnyvale, 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).
