San Luis Obispo
California, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
San Luis Obispo, CA

A beautiful view of fog on the blue water surrounded by scenic mountain ranges at the San Luis Obispo, California, a beautiful blue skyline in the far
A beautiful view of fog on the blue water surrounded by scenic mountain ranges at the San Luis Obispo, California, a beautiful blue skyline in the far
January in San Luis Obispo, California, is an enjoyable winter month, with average temperature varying between 62.4°F (16.9°C) and 46.9°F (8.3°C). In San Luis Obispo, the average high-temperature is relatively the same as in December - a comfortable 62.4°F (16.9°C). Weather in January »

February, the last month of the winter, in San Luis Obispo, is also an enjoyable month, with temperature in the range of an average high of 62.2°F (16.8°C) and an average low of 45.7°F (7.6°C). In San Luis Obispo, the average high-temperature is practically the same as in January - a still enjoyable 62.2°F (16.8°C). Weather in February »

March, the first month of the spring, in San Luis Obispo, is also an enjoyable month, with average temperature ranging between min 46.4°F (8°C) and max 64°F (17.8°C). In March, the average high-temperature is almost the same as in February - a still enjoyable 64°F (17.8°C). Weather in March »

April, like March, in San Luis Obispo, California, is another enjoyable spring month, with average temperature varying between 48.2°F (9°C) and 67.8°F (19.9°C). In April, the average high-temperature is essentially the same as in March - a still enjoyable 67.8°F (19.9°C). Weather in April »

May, the last month of the spring, in San Luis Obispo, is an agreeable month, with temperature in the range of an average high of 71.2°F (21.8°C) and an average low of 51.4°F (10.8°C). In San Luis Obispo, California, the average high-temperature is almost the same as in April - an agreeable 71.2°F (21.8°C). Weather in May »

June, the first month of the summer, in San Luis Obispo, is a warm month, with average temperature varying between 55°F (12.8°C) and 76.6°F (24.8°C). In June, the average high-temperature slightly increases, from a pleasant 71.2°F (21.8°C) in May, to a warm 76.6°F (24.8°C). Weather in June »

July, the same as June, is another warm summer month in San Luis Obispo, California, with average temperature ranging between min 58.8°F (14.9°C) and max 80.1°F (26.7°C). In San Luis Obispo, the average high-temperature in July is practically the same as in June - a still moderately hot 80.1°F (26.7°C). Weather in July »

August, the last month of the summer, in San Luis Obispo, is also a moderately hot month, with average temperature fluctuating between 59.5°F (15.3°C) and 80.2°F (26.8°C). With an average high-temperature of 80.2°F (26.8°C) and an average low-temperature of 59.5°F (15.3°C), August is the warmest month. Weather in August »

The first month of the autumn, September, is also a moderately hot month in San Luis Obispo, California, with temperature in the range of an average high of 79.9°F (26.6°C) and an average low of 60.3°F (15.7°C). In San Luis Obispo, the average high-temperature is practically the same as in August - a still moderately hot 79.9°F (26.6°C). Weather in September »

October, like September, in San Luis Obispo, California, is another warm autumn month, with average temperature fluctuating between 74.3°F (23.5°C) and 56.5°F (13.6°C). In San Luis Obispo, the average high-temperature slightly decreases, from 79.9°F (26.6°C) in September, to a still moderately hot 74.3°F (23.5°C). Weather in October »

The last month of the autumn, November, is also an enjoyable month in San Luis Obispo, California, with average temperature fluctuating between 67.1°F (19.5°C) and 51.3°F (10.7°C). In November, the average high-temperature marginally drops, from a moderately hot 74.3°F (23.5°C) in October, to an enjoyable 67.1°F (19.5°C). Weather in November »

The first month of the winter, December, is also a moderate month in San Luis Obispo, California, with temperature in the range of an average low of 46.2°F (7.9°C) and an average high of 60.3°F (15.7°C). The coldest month is December, with an average high-temperature of 60.3°F (15.7°C) and an average low-temperature of 46.2°F (7.9°C). Weather in December »

How many days does it rain in San Luis Obispo?

Throughout the year, there are 57 rainfall days, and 9.57" (243mm) of precipitation is accumulated.

What is the month with the least sunshine in San Luis Obispo?

February and December, with an average of 6.5h of sunshine, are months with the least sunshine.

What is the month with the lowest UV index in San Luis Obispo?

The month with the lowest UV index is February, with an average maximum UV index of 3.

What is the most humid month in San Luis Obispo?

March is the most humid month, with an average relative humidity of 69%.

What is the wettest month in San Luis Obispo?

The month with the most rainfall is March when the rain falls for 10.5 days and typically aggregates up to 2.01" (51mm) of precipitation.

What is the driest month in San Luis Obispo?

Months with the least rainfall are June and August Rain falls for 1.1 days and accumulates 0.04" (1mm) of rain.

When are the longest days in San Luis Obispo?

With an average of 14.5h of daylight, June has the longest days of the year in San Luis Obispo.

What are the months with the most sunshine in San Luis Obispo?

June through August, with an average of 12h of sunshine, are months with the most sunshine in San Luis Obispo.

What are the months with the highest UV index in San Luis Obispo?

Months with the highest UV index in San Luis Obispo, California, are June and August, with an average maximum UV index of 6.

What is the warmest month in San Luis Obispo?

With an average high-temperature of 80.2°F (26.8°C) and an average low-temperature of 59.5°F (15.3°C), August is the warmest month in San Luis Obispo, California.

What is the least humid month in San Luis Obispo?

Months with the lowest humidity in San Luis Obispo are September and October, with an average relative humidity of 57%.

What is the coldest month in San Luis Obispo?

December is the coldest month, with an average high-temperature of 60.3°F (15.7°C) and an average low-temperature of 46.2°F (7.9°C).

What is the month with the shortest days in San Luis Obispo?

With an average of 9.8h of daylight, December has the shortest days of the year in San Luis Obispo, California.
Average temperature - San Luis Obispo, CA
Average humidity - San Luis Obispo, CA
Average rainfall - San Luis Obispo, CA

The wettest month (with the highest rainfall) is March (2.01").
Driest months (with the lowest rainfall) are June and August (0.04").

Average rainfall days - San Luis Obispo, CA

The month with the highest number of rainy days is March (10.5 days).
The month with the lowest number of rainy days is August (0.6 days).

Average daylight / Average sunshine - San Luis Obispo, CA

The month with the longest days is June (Average daylight: 14.5h).
The month with shortest days is December (Average daylight: 9.8h).

Months with most sunshine are June, July and August (Average sunshine: 12h).
Months with least sunshine are February and December (Average sunshine: 6.5).