March weather forecast
Sonoma, CA

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Neat rows of vines in a vineyard farm in Sonoma, California
Neat rows of vines in a vineyard farm in Sonoma, California

Weather in March

The arrival of March in Sonoma brings a sure sign that spring is on the horizon. With longer, warmer days than February, the true spirit of spring gradually begins to unfurl across the city. An uptick in relative humidity is noticeable, creating an overall fresh feel. As Sonoma prepares to bid farewell to the winter, the weather in March presents a comfortable mixture of cool spring breezes, sunshine, and moderate levels of rainfall. Despite an increase in rain days, the amount of rainfall diminishes from the February level.

Temperature

In Sonoma, March's average high-temperature stands at an enjoyable 61.3°F (16.3°C), closely related to the preceding month. Throughout the month of March, Sonoma witnesses an average temperature of 43°F (6.1°C).

Humidity

March is the most humid month, with an average relative humidity of 76%.

Rainfall

In Sonoma, in March, during 13.4 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. Throughout the year, in Sonoma, there are 73.3 rainfall days, and 15.47" (393mm) of precipitation is accumulated.

Daylight

The average length of the day in March is 11h and 59min.
On the first day of the month, sunrise is at 6:40 am and sunset at 6:03 pm PST. On the last day of March, sunrise is at 6:54 am and sunset at 7:32 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 7.4h.

UV index

The average daily maximum UV index in March is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In March, a daily UV index of 4 turns into the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Updated: Jul 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average March temperature?

In Sonoma, 61.3°F (16.3°C) is the average high-temperature and 43°F (6.1°C) is the average low-temperature during March.

What is the most humid month?

With an average relative humidity of 76%, March is the most humid month.

What is the average humidity in March in Sonoma?

The average relative humidity in March is 76%.

How much does it rain in March?

In Sonoma, in March, it is raining for 13.4 days, with typically 2.48" (63mm) of accumulated precipitation.

What is the average length of the day in March?

The average day length in March is 11h and 59min.

What time are sunrise and sunset in March?

In March, on the first day of the month, sunrise is at 6:40 am and sunset at 6:03 pm PST. On the last day of the month, sunrise is at 6:54 am and sunset at 7:32 pm PDT.

When does Daylight Saving Time (DST) start in March in Sonoma?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. DST ends Sunday, November 3. 2024, at 2:00 am.

How long on average sun shines in March?

In Sonoma, the average sunshine duration in March is 7.4h.

What is the UV index intensity in March?

The average daily maximum UV index in March in Sonoma is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Sonoma, CA

Average temperature in March - Sonoma, CA
  • Average high temperature in March: 61.3°F

The warmest month (with the highest average high temperature) is August (82.9°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in March: 43°F

The month with the highest average low temperature is August (54.9°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).

Average pressure in March
Sonoma, CA

Average pressure in March - Sonoma, CA
  • Average pressure in March: 30.07"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in March
Sonoma, CA

Average wind speed in March - Sonoma, CA
  • Average wind speed in March: 5.7mph

The windiest month (with the highest average wind speed) is May (6.2mph).
The calmest month (with the lowest average wind speed) is November (4.4mph).

Average humidity in March
Sonoma, CA

Average humidity in March - Sonoma, CA
  • Average humidity in March: 76%

The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (59%).

Average rainfall in March
Sonoma, CA

Average rainfall in March - Sonoma, CA
  • Average rainfall in March: 2.48"

The wettest month (with the highest rainfall) is February (3.43").
The driest months (with the least rainfall) are July and August (0.04").

Average rainfall days in March
Sonoma, CA

Average rainfall days in March - Sonoma, CA
  • Average rainfall days in March: 13.4 days

The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is August (0.8 days).

Average daylight in March /
Average sunshine in March
Sonoma, CA

Average daylight in March / Average sunshine in March - Sonoma, 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 2min

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 36min).

Average sunshine days in March
Sonoma, CA

Average sunshine days in March - Sonoma, CA
  • Average sunshine days in March: 16.1 days

The month with the most sunshine days is July (28.7 days).
The month with the least sunshine days is March (16.1 days).

Average UV index in March
Sonoma, CA

Average UV index in March - Sonoma, 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
Sonoma, CA

Average cloud cover in March - Sonoma, CA
  • Average cloud cover in March: 40

The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 8).

Average visibility in March
Sonoma, CA

Average visibility in March - Sonoma, 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).

Sonoma, California, USA

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