Monthly weather forecast and climate
Palermo, CA

Weather in January

January is a moderate winter month in Palermo, California, with average temperature fluctuating between 56.8°F (13.8°C) and 41.9°F (5.5°C). In Palermo, the average high-temperature in January is almost the same as in December - a mild 56.8°F (13.8°C). Weather in January »

Weather in February

The last month of the winter, February, is also a moderate month in Palermo, California, with temperature in the range of an average high of 58.6°F (14.8°C) and an average low of 41.7°F (5.4°C). In February, the average high-temperature is relatively the same as in January - a still mild 58.6°F (14.8°C). Weather in February »

Weather in March

The first month of the spring, March, is an enjoyable month in Palermo, California, with average temperature fluctuating between 61.3°F (16.3°C) and 43.9°F (6.6°C). In Palermo, the average high-temperature in March is practically the same as in February - an enjoyable 61.3°F (16.3°C). Weather in March »

Weather in April

April in Palermo, California, is an agreeable spring month, with average temperature fluctuating between 68.9°F (20.5°C) and 47.7°F (8.7°C). In April, the average high-temperature marginally rises, from a comfortable 61.3°F (16.3°C) in March, to an agreeable 68.9°F (20.5°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm month in Palermo, California, with average temperature ranging between min 53.1°F (11.7°C) and max 77.5°F (25.3°C). In May, the average high-temperature marginally rises, from a pleasant 68.9°F (20.5°C) in April, to a moderately hot 77.5°F (25.3°C). Weather in May »

Weather in June

June, the first month of the summer, in Palermo, is a tropical month, with average temperature ranging between max 88.3°F (31.3°C) and min 60.1°F (15.6°C). In June, the average high-temperature rises, from a moderately hot 77.5°F (25.3°C) in May, to a tropical 88.3°F (31.3°C). Weather in June »

Weather in July

July in Palermo, California, is a sweltering summer month, with average temperature fluctuating between 63.7°F (17.6°C) and 95.9°F (35.5°C). July is the warmest month, with an average high-temperature of 95.9°F (35.5°C) and an average low-temperature of 63.7°F (17.6°C). Weather in July »

Weather in August

August, the last month of the summer, in Palermo, is also a hot month, with average temperature fluctuating between 62.2°F (16.8°C) and 94.6°F (34.8°C). In Palermo, the average high-temperature in August is essentially the same as in July - a hot 94.6°F (34.8°C). Weather in August »

Weather in September

September, the first month of the autumn, in Palermo, is also a hot month, with temperature in the range of an average high of 88.9°F (31.6°C) and an average low of 61°F (16.1°C). In September, the average high-temperature marginally drops, from 94.6°F (34.8°C) in August, to a still hot 88.9°F (31.6°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Palermo, California, with average temperature varying between 54°F (12.2°C) and 76.1°F (24.5°C). In Palermo, the average high-temperature drops, from a tropical 88.9°F (31.6°C) in September, to a warm 76.1°F (24.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an enjoyable month in Palermo, California, with average temperature fluctuating between 45.7°F (7.6°C) and 63.1°F (17.3°C). In November, the average high-temperature decreases, from a warm 76.1°F (24.5°C) in October, to a comfortable 63.1°F (17.3°C). Weather in November »

Weather in December

December, the first month of the winter, in Palermo, is also a fresh month, with average temperature ranging between min 40.6°F (4.8°C) and max 54.5°F (12.5°C). The coldest month is December, with an average high-temperature of 54.5°F (12.5°C) and an average low-temperature of 40.6°F (4.8°C). Weather in December »
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FAQ

How many days does it rain in Palermo?

Throughout the year, there are 80.4 rainfall days, and 24.21" (615mm) of precipitation is accumulated.

How many days does it snow in Palermo?

Throughout the year, in Palermo, California, there are 0.1 snowfall days.

When it does not snow in Palermo?

In Palermo, California, snow does not fall in January through November.

When is the lowest UV index in Palermo?

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index.

What is the most humid month in Palermo?

March is the most humid month in Palermo, California, with an average relative humidity of 72%.

What is the rainiest month in Palermo?

The month with the most rainfall in Palermo is March when the rain falls for 14.3 days and typically aggregates up to 4.61" (117mm) of precipitation.

When are the longest days in Palermo?

The month with the longest days is June, with an average of 14.9h of daylight.

When is the highest UV index in Palermo?

Months with the highest UV index in Palermo, California, are June and July, with an average maximum UV index of 7.

What is the warmest month in Palermo?

The warmest month is July, with an average high-temperature of 95.9°F (35.5°C) and an average low-temperature of 63.7°F (17.6°C).

What is the least humid month in Palermo?

July is the least humid month, with an average relative humidity of 33%.

What is the driest month in Palermo?

July is the month with the least rainfall in Palermo. Rain falls for 1.3 days and accumulates 0.04" (1mm) of precipitation.

What month has the most sunshine in Palermo?

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

What is the coldest month in Palermo?

With an average high-temperature of 54.5°F (12.5°C) and an average low-temperature of 40.6°F (4.8°C), December is the coldest month in Palermo.

When does it snow in Palermo?

The only month with snowfall in Palermo, California, is December.

When does it snow the most in Palermo?

The month with the most snowfall days in Palermo is December when snow falls for 0.1 days.

What is the month with the shortest days in Palermo?

The month with the shortest days is December, with an average of 9.4h of daylight.

What is the month with the least sunshine in Palermo?

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

Average temperature
Palermo, CA

Average temperature - Palermo, CA

The warmest month (with the highest average high temperature) is July (95.9°F).
The month with the lowest average high temperature is December (54.5°F).

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is December (40.6°F).

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Average pressure
Palermo, CA

Average pressure - Palermo, CA

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.9").

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Average wind speed
Palermo, CA

Average wind speed - Palermo, CA

The windiest month (with the highest average wind speed) is March (6.3mph).
The calmest months (with the lowest average wind speed) are August and November (5.2mph).

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Average rainfall
Palermo, CA

Average rainfall - Palermo, CA

The wettest month (with the highest rainfall) is March (4.61").
The driest month (with the least rainfall) is July (0.04").

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Average rainfall days
Palermo, CA

Average rainfall days - Palermo, CA

The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is July (1.3 days).

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Average snowfall days
Palermo, CA

Average snowfall days - Palermo, CA

The month with the highest number of snowfall days is December (0.1 days).
Months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight / Average sunshine
Palermo, CA

Average daylight / Average sunshine - Palermo, CA

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.8h).

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Average sunshine days
Palermo, CA

Average sunshine days - Palermo, CA

The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is March (15.5 days).

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Average UV index
Palermo, CA

Average UV index - Palermo, CA

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average visibility
Palermo, CA

Average visibility - Palermo, 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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