Monthly weather forecast and climate
Atascadero, CA

The Sunken Gardens Park overlooking the Atascadero City Hall in California
The Sunken Gardens Park overlooking the Atascadero City Hall in California

Weather in January

January is an enjoyable winter month in Atascadero, California, with average temperature varying between 61°F (16.1°C) and 44.2°F (6.8°C). In Atascadero, the average high-temperature in January is relatively the same as in December - a comfortable 61°F (16.1°C). Weather in January »

Weather in February

February, the last month of the winter, in Atascadero, is another comfortable month, with average temperature fluctuating between 61.3°F (16.3°C) and 43.2°F (6.2°C). In Atascadero, the average high-temperature is almost the same as in January - a still comfortable 61.3°F (16.3°C). Weather in February »

Weather in March

March, the first month of the spring, in Atascadero, is also an enjoyable month, with average temperature fluctuating between 44.2°F (6.8°C) and 64.4°F (18°C). In March, the average high-temperature is essentially the same as in February - a still enjoyable 64.4°F (18°C). Weather in March »

Weather in April

April in Atascadero, California, is a pleasant spring month, with average temperature varying between 46.2°F (7.9°C) and 69.6°F (20.9°C). In Atascadero, the average high-temperature in April is practically the same as in March - a pleasant 69.6°F (20.9°C). Weather in April »

Weather in May

May, the last month of the spring, in Atascadero, is a warm month, with average temperature fluctuating between 50.5°F (10.3°C) and 73.9°F (23.3°C). In Atascadero, the average high-temperature is almost the same as in April - a warm 73.9°F (23.3°C). Weather in May »

Weather in June

June, the first month of the summer, in Atascadero, is still a warm month, with average temperature fluctuating between 80.8°F (27.1°C) and 55.2°F (12.9°C). In Atascadero, California, the average high-temperature slightly increases, from 73.9°F (23.3°C) in May, to a still warm 80.8°F (27.1°C). Weather in June »

Weather in July

July, like June, in Atascadero, California, is a moderately hot summer month, with temperature in the range of an average low of 58.8°F (14.9°C) and an average high of 85.3°F (29.6°C). In July, the average high-temperature is relatively the same as in June - a still warm 85.3°F (29.6°C). Weather in July »

Weather in August

August, the last month of the summer, in Atascadero, is another warm month, with temperature in the range of an average high of 85.5°F (29.7°C) and an average low of 59.5°F (15.3°C). August is the warmest month, with an average high-temperature of 85.5°F (29.7°C) and an average low-temperature of 59.5°F (15.3°C). The average heat index is estimated at a hot 88°F (31.1°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Atascadero, California, with temperature in the range of an average low of 59.9°F (15.5°C) and an average high of 83.3°F (28.5°C). In September, the average high-temperature is essentially the same as in August - a still moderately hot 83.3°F (28.5°C). Weather in September »

Weather in October

October, like September, in Atascadero, California, is another warm autumn month, with average temperature fluctuating between 75.6°F (24.2°C) and 54.7°F (12.6°C). In Atascadero, the average high-temperature in October marginally drops, from a moderately hot 83.3°F (28.5°C) in September, to a still warm 75.6°F (24.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an enjoyable month in Atascadero, California, with average temperature ranging between min 48.2°F (9°C) and max 66.7°F (19.3°C). In November, the average high-temperature marginally drops, from a moderately hot 75.6°F (24.2°C) in October, to a comfortable 66.7°F (19.3°C). Weather in November »

Weather in December

December, the first month of the winter, in Atascadero, is also a moderate month, with average temperature fluctuating between 42.8°F (6°C) and 58.5°F (14.7°C). December is the coldest month, with an average high-temperature of 58.5°F (14.7°C) and an average low-temperature of 42.8°F (6°C). Weather in December »
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FAQ

How much does it rain in Atascadero?

Throughout the year, in Atascadero, there are 54.8 rainfall days, and 8.66" (220mm) of precipitation is accumulated.

What is the most humid month in Atascadero?

February and March, with an average relative humidity of 68%, are most humid months in Atascadero, California.

What is the month with the least sunshine in Atascadero?

Months with the least sunshine in Atascadero, California, are February and December, with an average of 6.3h of sunshine.

When is the lowest UV index in Atascadero?

Months with the lowest UV index in Atascadero, California, are February, November and December, with an average maximum UV index of 3.

What is the rainiest month in Atascadero?

The month with the most rainfall is March when the rain falls for 10.2 days and typically aggregates up to 1.73" (44mm) of precipitation.

What is the driest month in Atascadero?

June and August are months with the least rain in Atascadero when the rain falls for 0.8 days and typically aggregates up to 0.04" (1mm) of rain.

When are the longest days in Atascadero?

June has the longest days of the year in Atascadero, California, with an average of 14.5h of daylight.

What is the month with the most sunshine in Atascadero?

June and July, with an average of 12h of sunshine, are months with the most sunshine in Atascadero.

When is the highest UV index in Atascadero?

June through September, with an average maximum UV index of 6, are months with the highest UV index.

What is the warmest month in Atascadero?

August is the warmest month, with an average high-temperature of 85.5°F (29.7°C) and an average low-temperature of 59.5°F (15.3°C).

What is the least humid month in Atascadero?

September is the least humid month, with an average relative humidity of 50%.

What is the coldest month in Atascadero?

With an average high-temperature of 58.5°F (14.7°C) and an average low-temperature of 42.8°F (6°C), December is the coldest month in Atascadero, California.

What is the month with the shortest days in Atascadero?

With an average of 9.8h of daylight, December has the shortest days of the year.

Average temperature
Atascadero, CA

Average temperature - Atascadero, CA

The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is December (58.5°F).

The month with the highest average low temperature is September (59.9°F).
The coldest month (with the lowest average low temperature) is December (42.8°F).

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Average pressure
Atascadero, CA

Average pressure - Atascadero, CA

The month with the highest atmospheric pressure is January (30.12").
Months with the lowest atmospheric pressure are June, August and September (29.91").

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Average wind speed
Atascadero, CA

Average wind speed - Atascadero, CA

The windiest months (with the highest average wind speed) are March and April (5.9mph).
The calmest months (with the lowest average wind speed) are August and September (4.5mph).

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Average humidity
Atascadero, CA

Average humidity - Atascadero, CA

Months with the highest relative humidity are February and March (68%).
The month with the lowest relative humidity is September (50%).

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Average rainfall
Atascadero, CA

Average rainfall - Atascadero, CA

The wettest month (with the highest rainfall) is March (1.73").
The driest months (with the least rainfall) are June and August (0.04").

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Average rainfall days
Atascadero, CA

Average rainfall days - Atascadero, CA

The month with the highest number of rainy days is March (10.2 days).
The month with the least rainy days is June (0.8 days).

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Average daylight / Average sunshine
Atascadero, CA

Average daylight / Average sunshine - Atascadero, CA

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

Months with the most sunshine are June and July (Average sunshine: 12h).
Months with the least sunshine are February and December (Average sunshine: 6.3).

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Average sunshine days
Atascadero, CA

Average sunshine days - Atascadero, CA

The month with the most sunshine days is August (29.8 days).
The month with the least sunshine days is February (19.7 days).

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Average UV index
Atascadero, CA

Average UV index - Atascadero, CA

Months with the highest UV index are June, July, August and September (UV index 6).
Months with the lowest UV index are February, November and December (UV index 3).

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Average visibility
Atascadero, CA

Average visibility - Atascadero, CA

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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