Climate and monthly weather forecast
San Carlos, CA

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Weather in January

January, the same as December, in San Carlos, California, is another refreshing winter month, with an average temperature fluctuating between 46°F (7.8°C) and 56.8°F (13.8°C). During January, San Carlos records an average high-temperature of a still mild 56.8°F (13.8°C), marking a slight divergence from December's 55.9°F (13.3°C). Weather in January »

Weather in February

The last month of the winter, February, is also a moderate month in San Carlos, California, with temperature in the range of an average high of 58.1°F (14.5°C) and an average low of 46.2°F (7.9°C). San Carlos's shift from January to February is accompanied by an average high-temperature of a still mild 58.1°F (14.5°C), a slight deviation from 56.8°F (13.8°C). Weather in February »

Weather in March

The first month of the spring, March, is still a mild month in San Carlos, California, with an average temperature fluctuating between 47.1°F (8.4°C) and 59.7°F (15.4°C). At the start of March, San Carlos's average high-temperature reaches a still mild 59.7°F (15.4°C), subtly different from the preceding month. Weather in March »

Weather in April

April is a refreshing spring month in San Carlos, California, with an average temperature fluctuating between 48°F (8.9°C) and 62.6°F (17°C). The average high-temperature during April registers at a comfortable 62.6°F (17°C), closely corresponding to the preceding month. Weather in April »

Weather in May

The last month of the spring, May, is also an enjoyable month in San Carlos, California, with an average temperature fluctuating between 50°F (10°C) and 65.1°F (18.4°C). May's arrival registers an average high-temperature of a still enjoyable 65.1°F (18.4°C), closely aligning with the temperature of the previous month. Weather in May »

Weather in June

June, the first month of the summer in San Carlos, is an agreeable month, with an average temperature ranging between max 70.3°F (21.3°C) and min 53.2°F (11.8°C). As June takes its course, San Carlos's average high-temperature registers at an agreeable 70.3°F (21.3°C), closely aligning with the preceding month. Weather in June »

Weather in July

July, the same as June, in San Carlos, California, is another pleasant summer month, with an average temperature fluctuating between 72.9°F (22.7°C) and 54.3°F (12.4°C). An average high-temperature of a still pleasant 72.9°F (22.7°C) marks July, exhibiting a close resemblance to the conditions in June. Weather in July »

Weather in August

The last month of the summer, August, is also an agreeable month in San Carlos, California, with an average temperature ranging between max 73°F (22.8°C) and min 56.1°F (13.4°C). San Carlos's August weather, marked by an average high temperature of 73°F (22.8°C) and an average low temperature of 56.1°F (13.4°C), is the warmest in the year. Weather in August »

Weather in September

September, the first month of the autumn in San Carlos, is still a pleasant month, with an average temperature varying between 72.9°F (22.7°C) and 56.7°F (13.7°C). September's onset records a minor alteration in the average high-temperature to a still agreeable 72.9°F (22.7°C) from August's 73°F (22.8°C). Weather in September »

Weather in October

October, the same as September, in San Carlos, California, is another pleasant autumn month, with temperature in the range of an average low of 54.9°F (12.7°C) and an average high of 68.5°F (20.3°C). With the advent of October, San Carlos experiences an average high-temperature of a still pleasant 68.5°F (20.3°C), mirroring a close resemblance to the previous month. Weather in October »

Weather in November

November, the last month of the autumn in San Carlos, is another comfortable month, with an average temperature fluctuating between 61.7°F (16.5°C) and 50.5°F (10.3°C). The onset of November entails a subtle temperature shift, as the average high-temperature eases from a pleasant 68.5°F (20.3°C) in October to a refreshing 61.7°F (16.5°C). Weather in November »

Weather in December

December, the first month of the winter in San Carlos, is still a mild month, with an average temperature fluctuating between 46.2°F (7.9°C) and 55.9°F (13.3°C). December, with its average high-temperature of 55.9°F (13.3°C) and an average low-temperature of 46.2°F (7.9°C), holds the record as the coldest month. Weather in December »

Frequently asked questions

How much does it rain?

In San Carlos, during the entire year, the rain falls for 77.5 days and collects up to 11.22" (285mm) of precipitation.

What is the wettest month?

February is the month with the most rainfall in San Carlos. Rain falls for 8.6 days and accumulates 2.09" (53mm) of precipitation.

What are the months with the lowest UV index?

The months with the lowest UV index in San Carlos are February, November and December, with an average maximum UV index of 3.

What is the most humid month?

The most humid month is March, with an average relative humidity of 75%.

When is Daylight Saving Time (DST)?

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 ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

When are the longest days?

The month with the longest days is June, with an average of 14h and 42min of daylight.

When is the highest UV index?

June through September, with an average maximum UV index of 5, are months with the highest UV index.

What is the driest month?

The months with the least rainfall are July and August Rain falls for 1.8 days and accumulates 0.08" (2mm) of rain.

What month has the most sunshine?

The month with the most sunshine is July, with an average of 12h of sunshine.

What is the warmest month?

With average high and low temperatures of 73°F (22.8°C) and 56.1°F (13.4°C) respectively, August is San Carlos's warmest month.

What is the least humid month?

The least humid month is October, with an average relative humidity of 68%.

What is the coldest time of year?

In San Carlos, December is the coldest month, with temperatures averaging a high of 55.9°F (13.3°C) and a low of 46.2°F (7.9°C).

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 36min of daylight.

What is the month with the least sunshine?

December has the least sunshine of the year, with an average of 5.8h of sunshine.

Average temperature
San Carlos, CA

Average temperature - San Carlos, CA

The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is December (55.9°F).

The month with the highest average low temperature is September (56.7°F).
The coldest month (with the lowest average low temperature) is January (46°F).

Average pressure
San Carlos, CA

Average pressure - San Carlos, CA

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
San Carlos, CA

Average wind speed - San Carlos, CA

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is October (5.5mph).

Average humidity
San Carlos, CA

Average humidity - San Carlos, CA

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (68%).

Average rainfall
San Carlos, CA

Average rainfall - San Carlos, CA

The wettest month (with the highest rainfall) is February (2.09").
The driest months (with the least rainfall) are July and August (0.08").

Average rainfall days
San Carlos, CA

Average rainfall days - San Carlos, CA

The month with the highest number of rainy days is March (13 days).
The month with the least rainy days is July (1.8 days).

Average daylight / Average sunshine
San Carlos, CA

Average daylight / Average sunshine - San Carlos, CA

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).

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 48min).

Average sunshine days
San Carlos, CA

Average sunshine days - San Carlos, CA

The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is March (16.3 days).

Average UV index
San Carlos, CA

Average UV index - San Carlos, CA

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, November and December (UV index 3).

Average visibility
San Carlos, CA

Average visibility - San Carlos, CA

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).

San Carlos, California, USA

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