Monthly weather forecast and climate
Castella, CA

Weather in January

January in Castella, California, is a chilly winter month, with average temperature fluctuating between 43.3°F (6.3°C) and 28.8°F (-1.8°C). In Castella, the average high-temperature in January is relatively the same as in December - a chilly 43.3°F (6.3°C). Weather in January »

Weather in February

February, the last month of the winter, in Castella, is also a frosty month, with average temperature varying between 28.8°F (-1.8°C) and 44.1°F (6.7°C). In February, the average high-temperature is practically the same as in January - a still chilly 44.1°F (6.7°C). Weather in February »

Weather in March

The first month of the spring, March, is also a frosty month in Castella, California, with average temperature fluctuating between 30.7°F (-0.7°C) and 47.5°F (8.6°C). In March, the average high-temperature is practically the same as in February - a still frosty 47.5°F (8.6°C). Weather in March »

Weather in April

April is a mild spring month in Castella, California, with average temperature varying between 33.4°F (0.8°C) and 56.1°F (13.4°C). In April, the average high-temperature slightly increases, from a chilly 47.5°F (8.6°C) in March, to a moderate 56.1°F (13.4°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Castella, California, with average temperature fluctuating between 65.1°F (18.4°C) and 38.8°F (3.8°C). In Castella, the average high-temperature marginally rises, from a mild 56.1°F (13.4°C) in April, to a comfortable 65.1°F (18.4°C). Weather in May »

Weather in June

June, the first month of the summer, in Castella, is a moderately hot month, with average temperature fluctuating between 75.4°F (24.1°C) and 45.3°F (7.4°C). In Castella, the average high-temperature in June rises, from an enjoyable 65.1°F (18.4°C) in May, to a warm 75.4°F (24.1°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Castella, California, with temperature in the range of an average high of 85.6°F (29.8°C) and an average low of 51.4°F (10.8°C). July is the warmest month, with an average high-temperature of 85.6°F (29.8°C) and an average low-temperature of 51.4°F (10.8°C). The average heat index in July is appraised at a tropical 86.2°F (30.1°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Castella, California, with average temperature fluctuating between 84.7°F (29.3°C) and 51.4°F (10.8°C). In August, the average high-temperature is practically the same as in July - a still warm 84.7°F (29.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Castella, California, with average temperature varying between 77.2°F (25.1°C) and 46.2°F (7.9°C). In September, the average high-temperature slightly decreases, from a moderately hot 84.7°F (29.3°C) in August, to a still warm 77.2°F (25.1°C). Weather in September »

Weather in October

October, like September, in Castella, California, is another enjoyable autumn month, with average temperature fluctuating between 39.7°F (4.3°C) and 63.9°F (17.7°C). In Castella, the average high-temperature drops, from a warm 77.2°F (25.1°C) in September, to a comfortable 63.9°F (17.7°C). Weather in October »

Weather in November

November, the last month of the autumn, in Castella, is another cool month, with average temperature fluctuating between 32.5°F (0.3°C) and 50.4°F (10.2°C). In Castella, the average high-temperature in November drops, from an enjoyable 63.9°F (17.7°C) in October, to a cool 50.4°F (10.2°C). Weather in November »

Weather in December

December, the first month of the winter, in Castella, is still a cold month, with average temperature varying between 26.8°F (-2.9°C) and 41°F (5°C). December is the coldest month, with an average high-temperature of 41°F (5°C) and an average low-temperature of 26.8°F (-2.9°C). Weather in December »
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FAQ

How much does it rain in Castella?

In Castella, California, during the entire year, the rain falls for 113.4 days and collects up to 31.3" (795mm) of precipitation.

When does it snow in Castella?

Months with snowfall in Castella are January through May, October through December.

How many days does it snow in Castella?

Throughout the year, in Castella, there are 28.7 snowfall days, and 45.51" (1156mm) of snow is accumulated.

When does it snow the most in Castella?

January is the month with the most snowfall in Castella. Snow falls for 5.8 days and accumulates 12.6" (320mm) of snow.

When is the lowest UV index in Castella?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Castella.

What is the most humid month in Castella?

March is the most humid month, with an average relative humidity of 81%.

What is the rainiest month in Castella?

The month with the most rainfall is March when the rain falls for 17.3 days and typically aggregates up to 5.55" (141mm) of precipitation.

When it does not snow in Castella?

In Castella snow does not fall in June through September.

When are the longest days in Castella?

With an average of 15.1h of daylight, June has the longest days of the year in Castella, California.

What are the months with the highest UV index in Castella?

Months with the highest UV index are June and July, with an average maximum UV index of 6.

What is the warmest month in Castella?

With an average high-temperature of 85.6°F (29.8°C) and an average low-temperature of 51.4°F (10.8°C), July is the warmest month in Castella, California.

What is the driest month in Castella?

July is the month with the least rainfall in Castella, California. Rain falls for 3.4 days and accumulates 0.24" (6mm) of precipitation.

What month has the most sunshine in Castella?

With an average of 12.1h of sunshine, July has the most sunshine of the year.

What is the least humid month in Castella?

The least humid month in Castella is August, with an average relative humidity of 44%.

What is the coldest month in Castella?

The coldest month in Castella, California, is December, with an average high-temperature of 41°F (5°C) and an average low-temperature of 26.8°F (-2.9°C).

What is the month with the shortest days in Castella?

December has the shortest days of the year, with an average of 9.3h of daylight.

What is the month with the least sunshine in Castella?

December has the least sunshine of the year in Castella, with an average of 5.2h of sunshine.

Average temperature
Castella, CA

Average temperature - Castella, CA

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (41°F).

Months with the highest average low temperature are July and August (51.4°F).
The coldest month (with the lowest average low temperature) is December (26.8°F).

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Average pressure
Castella, CA

Average pressure - Castella, CA

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is August (29.93").

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Average wind speed
Castella, CA

Average wind speed - Castella, CA

The windiest month (with the highest average wind speed) is March (5.7mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

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Average rainfall
Castella, CA

Average rainfall - Castella, CA

The wettest month (with the highest rainfall) is March (5.55").
The driest month (with the least rainfall) is July (0.24").

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Average rainfall days
Castella, CA

Average rainfall days - Castella, CA

The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (2.7 days).

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Average snowfall
Castella, CA

Average snowfall - Castella, CA

The month with the highest snowfall is January (12.6").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Castella, CA

Average snowfall days - Castella, CA

The month with the highest number of snowfall days is December (6.4 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight / Average sunshine
Castella, CA

Average daylight / Average sunshine - Castella, CA

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.2h).

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Average sunshine days
Castella, CA

Average sunshine days - Castella, CA

The month with the most sunshine days is August (25.7 days).
The month with the least sunshine days is March (11.1 days).

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Average UV index
Castella, CA

Average UV index - Castella, CA

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average visibility
Castella, CA

Average visibility - Castella, CA

Months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
Months with the lowest visibility are January, February, March and December (5mi).

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