Arroyo Grande
California, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Arroyo Grande, CA

January, the same as December, is another comfortable winter month in Arroyo Grande, California, with temperature in the range of an average low of 47.5°F (8.6°C) and an average high of 63°F (17.2°C). In January, the average high-temperature is essentially the same as in December - a still enjoyable 63°F (17.2°C). Weather in January »

February, the last month of the winter, in Arroyo Grande, is also an enjoyable month, with average temperature fluctuating between 62.2°F (16.8°C) and 46°F (7.8°C). In Arroyo Grande, the average high-temperature in February is practically the same as in January - a still enjoyable 62.2°F (16.8°C). Weather in February »

The first month of the spring, March, is still a comfortable month in Arroyo Grande, California, with average temperature ranging between max 64.9°F (18.3°C) and min 46.9°F (8.3°C). In Arroyo Grande, California, the average high-temperature is relatively the same as in February - a still enjoyable 64.9°F (18.3°C). Weather in March »

April, like March, in Arroyo Grande, California, is another comfortable spring month, with average temperature varying between 67.6°F (19.8°C) and 48.6°F (9.2°C). In April, the average high-temperature is relatively the same as in March - a still comfortable 67.6°F (19.8°C). Weather in April »

The last month of the spring, May, is an agreeable month in Arroyo Grande, California, with temperature in the range of an average low of 51.4°F (10.8°C) and an average high of 70.5°F (21.4°C). In Arroyo Grande, the average high-temperature is essentially the same as in April - a pleasant 70.5°F (21.4°C). Weather in May »

The first month of the summer, June, is a moderately hot month in Arroyo Grande, California, with average temperature ranging between min 55°F (12.8°C) and max 75.4°F (24.1°C). In Arroyo Grande, the average high-temperature is essentially the same as in May - a warm 75.4°F (24.1°C). Weather in June »

July, the same as June, is a moderately hot summer month in Arroyo Grande, California, with average temperature fluctuating between 78.6°F (25.9°C) and 58.5°F (14.7°C). In Arroyo Grande, California, the average high-temperature is essentially the same as in June - a still moderately hot 78.6°F (25.9°C). Weather in July »

August, the last month of the summer, in Arroyo Grande, is also a moderately hot month, with average temperature ranging between min 59.2°F (15.1°C) and max 78.8°F (26°C). In Arroyo Grande, the average high-temperature is essentially the same as in July - a still warm 78.8°F (26°C). Weather in August »

The first month of the autumn, September, is also a moderately hot month in Arroyo Grande, California, with average temperature fluctuating between 59.9°F (15.5°C) and 79.5°F (26.4°C). The warmest month is September, with an average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 59.9°F (15.5°C). Weather in September »

October, like September, in Arroyo Grande, California, is another warm autumn month, with average temperature fluctuating between 74.3°F (23.5°C) and 56.7°F (13.7°C). In October, the average high-temperature is essentially the same as in September - a still warm 74.3°F (23.5°C). Weather in October »

The last month of the autumn, November, is also an enjoyable month in Arroyo Grande, California, with average temperature ranging between min 51.4°F (10.8°C) and max 67.8°F (19.9°C). In November, the average high-temperature marginally drops, from a moderately hot 74.3°F (23.5°C) in October, to a comfortable 67.8°F (19.9°C). Weather in November »

December, the first month of the winter, in Arroyo Grande, is also an enjoyable month, with temperature in the range of an average low of 46.8°F (8.2°C) and an average high of 61.2°F (16.2°C). With an average high-temperature of 61.2°F (16.2°C) and an average low-temperature of 46.8°F (8.2°C), December is the coldest month. Weather in December »

How much does it rain in Arroyo Grande?

In Arroyo Grande, during the entire year, the rain falls for 47.6 days and collects up to 6.93" (176mm) of precipitation.

What is the month with the lowest UV index in Arroyo Grande?

January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Arroyo Grande, California.

What is the month with the least sunshine in Arroyo Grande?

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

What is the most humid month in Arroyo Grande?

With an average relative humidity of 68%, March is the most humid month in Arroyo Grande.

What is the wettest month in Arroyo Grande?

March is the month with the most rainfall in Arroyo Grande, California. Rain falls for 8.4 days and accumulates 1.61" (41mm) of precipitation.

What is the driest month in Arroyo Grande?

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

When are the longest days in Arroyo Grande?

With an average of 14.5h of daylight, June has the longest days of the year in Arroyo Grande, California.

What is the month with the most sunshine in Arroyo Grande?

Months with the most sunshine in Arroyo Grande are June through August, with an average of 12h of sunshine.

What is the month with the highest UV index in Arroyo Grande?

June and August, with an average maximum UV index of 6, are months with the highest UV index.

What is the warmest month in Arroyo Grande?

The warmest month in Arroyo Grande is September, with an average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 59.9°F (15.5°C).

What is the least humid month in Arroyo Grande?

October is the least humid month in Arroyo Grande, California, with an average relative humidity of 58%.

What is the coldest month in Arroyo Grande?

The coldest month in Arroyo Grande is December, with an average high-temperature of 61.2°F (16.2°C) and an average low-temperature of 46.8°F (8.2°C).

What is the month with the shortest days in Arroyo Grande?

December has the shortest days of the year in Arroyo Grande, with an average of 9.8h of daylight.
Average temperature - Arroyo Grande, CA
Average humidity - Arroyo Grande, CA
Average rainfall - Arroyo Grande, CA

The wettest month (with the highest rainfall) is March (1.61").
Driest months (with the lowest rainfall) are June and August (0.04").

Average rainfall days - Arroyo Grande, CA

The month with the highest number of rainy days is March (8.4 days).
The month with the lowest number of rainy days is August (0.8 days).

Average daylight / Average sunshine - Arroyo Grande, 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).

Average UV index - Arroyo Grande, CA