March weather forecast
South San Francisco, CA

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A sign in large font of the South San Francisco City, California, on the hills over the scenic home setting below
A sign in large font of the South San Francisco City, California, on the hills over the scenic home setting below

Weather in March

March, the first month of the spring in South San Francisco, is also a moderate month, with an average temperature varying between 48.2°F (9°C) and 58.5°F (14.7°C).

Temperature

The arrival of March is marked by an average high-temperature of a still mild 58.5°F (14.7°C), bearing a close resemblance to February. South San Francisco throughout March, records an average low-temperature of 48.2°F (9°C).

Humidity

In March, the average relative humidity is 76%.

Rainfall

In South San Francisco, during March, the rain falls for 9.4 days and regularly aggregates up to 0.63" (16mm) of precipitation. In South San Francisco, during the entire year, the rain falls for 53.6 days and collects up to 3.9" (99mm) of precipitation.

Daylight

In South San Francisco, the average length of the day in March is 11h and 59min.
On the first day of the month, sunrise is at 6:39 am and sunset at 6:03 pm PST. On the last day of March, sunrise is at 6:55 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

In March, the average sunshine is 7.7h.

UV index

The average daily maximum UV index in March in South San Francisco is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In March, a daily UV index of 4 turns into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.

Frequently asked questions

What is the average March temperature?

An average high-temperature, in March, in South San Francisco, is 58.5°F (14.7°C) and the average low-temperature is 48.2°F (9°C).

What is the average humidity in March?

The average relative humidity in March is 76%.

How much does it rain in March?

In South San Francisco, in March, it is raining for 9.4 days, with typically 0.63" (16mm) of accumulated precipitation.

How many hours of daylight does South San Francisco have in March?

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

When are sunrise and sunset in March?

In March, on the first day of the month, sunrise is at 6:39 am and sunset at 6:03 pm PST. On the last day of the month, sunrise is at 6:55 am and sunset at 7:32 pm PDT.

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

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?

The average sunshine duration in March in South San Francisco is 7.7h.

How high is the UV index in March?

In South San Francisco, the average daily maximum UV index in March is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
South San Francisco, CA

Average temperature in March - South San Francisco, CA
  • Average high temperature in March: 58.5°F

The warmest month (with the highest average high temperature) is September (70°F).
The month with the lowest average high temperature is December (55.6°F).

  • Average low temperature in March: 48.2°F

The months with the highest average low temperature are August and September (56.5°F).
The coldest months (with the lowest average low temperature) are January, February and December (47.8°F).

Average pressure in March
South San Francisco, CA

Average pressure in March - South San Francisco, 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 September (29.92"Hg).

Average wind speed in March
South San Francisco, CA

Average wind speed in March - South San Francisco, CA
  • Average wind speed in March: 8.1mph

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).

Average humidity in March
South San Francisco, CA

Average humidity in March - South San Francisco, CA
  • Average humidity in March: 76%

The month with the highest relative humidity is August (78%).
The months with the lowest relative humidity are October and November (71%).

Average rainfall in March
South San Francisco, CA

Average rainfall in March - South San Francisco, CA
  • Average rainfall in March: 0.63"

The wettest month (with the highest rainfall) is February (0.79").
The driest months (with the least rainfall) are June, July and August (0.04").

Average rainfall days in March
South San Francisco, CA

Average rainfall days in March - South San Francisco, CA
  • Average rainfall days in March: 9.4 days

The month with the highest number of rainy days is March (9.4 days).
The month with the least rainy days is June (1.1 days).

Average daylight in March /
Average sunshine in March
South San Francisco, CA

Average daylight in March / Average sunshine in March - South San Francisco, 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 4min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

Average sunshine days in March
South San Francisco, CA

Average sunshine days in March - South San Francisco, CA
  • Average sunshine days in March: 19.4 days

The months with the most sunshine days are June, July and September (26.3 days).
The month with the least sunshine days is March (19.4 days).

Average UV index in March
South San Francisco, CA

Average UV index in March - South San Francisco, CA
  • Average UV index in March: 4

The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February and December (UV index 3).

Average cloud cover in March
South San Francisco, CA

Average cloud cover in March - South San Francisco, 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 September (Cloud cover 16).

Average visibility in March
South San Francisco, CA

Average visibility in March - South San Francisco, 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).

South San Francisco, California, USA

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