Monthly weather forecast and climate
Pasadena, CA

Pasadena City Hall in California, with neon-lit paths and natural gardens, under a perfect blue night sky
Pasadena City Hall in California, with neon-lit paths and natural gardens, under a perfect blue night sky

Weather in January

January, the same as December, is another comfortable winter month in Pasadena, California, with average temperature varying between 47.3°F (8.5°C) and 63.9°F (17.7°C). In January, the average high-temperature is essentially the same as in December - a still enjoyable 63.9°F (17.7°C). Weather in January »

Weather in February

February, the last month of the winter, in Pasadena, is also an enjoyable month, with average temperature varying between 63.3°F (17.4°C) and 46.6°F (8.1°C). In February, the average high-temperature is relatively the same as in January - a still comfortable 63.3°F (17.4°C). Weather in February »

Weather in March

The first month of the spring, March, is also an enjoyable month in Pasadena, California, with average temperature ranging between min 48.2°F (9°C) and max 66.9°F (19.4°C). In Pasadena, the average high-temperature is relatively the same as in February - a still enjoyable 66.9°F (19.4°C). Weather in March »

Weather in April

April is a pleasant spring month in Pasadena, California, with average temperature fluctuating between 71.2°F (21.8°C) and 50.7°F (10.4°C). In April, the average high-temperature is essentially the same as in March - an agreeable 71.2°F (21.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a moderately hot month in Pasadena, California, with average temperature fluctuating between 73.9°F (23.3°C) and 54.1°F (12.3°C). In May, the average high-temperature is relatively the same as in April - a warm 73.9°F (23.3°C). Weather in May »

Weather in June

The first month of the summer, June, is still a warm month in Pasadena, California, with average temperature fluctuating between 58.3°F (14.6°C) and 80.2°F (26.8°C). In June, the average high-temperature slightly increases, from a moderately hot 73.9°F (23.3°C) in May, to a still warm 80.2°F (26.8°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Pasadena, California, with average temperature varying between 63.5°F (17.5°C) and 85.5°F (29.7°C). In July, the average high-temperature is essentially the same as in June - a still warm 85.5°F (29.7°C). Weather in July »

Weather in August

The last month of the summer, August, is a tropical month in Pasadena, California, with average temperature varying between 87.1°F (30.6°C) and 64.9°F (18.3°C). August is the warmest month, with an average high-temperature of 87.1°F (30.6°C) and an average low-temperature of 64.9°F (18.3°C). In August, the average heat index is estimated at a hot 89.2°F (31.8°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Pasadena, California, with average temperature varying between 84.4°F (29.1°C) and 63.3°F (17.4°C). In Pasadena, the average high-temperature in September is almost the same as in August - a warm 84.4°F (29.1°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Pasadena, California, with average temperature ranging between max 77.5°F (25.3°C) and min 58.6°F (14.8°C). In October, the average high-temperature slightly decreases, from 84.4°F (29.1°C) in September, to a still moderately hot 77.5°F (25.3°C). Weather in October »

Weather in November

November, the last month of the autumn, in Pasadena, is another pleasant month, with average temperature varying between 52.7°F (11.5°C) and 69.6°F (20.9°C). In November, the average high-temperature marginally drops, from a warm 77.5°F (25.3°C) in October, to a pleasant 69.6°F (20.9°C). Weather in November »

Weather in December

December, the first month of the winter, in Pasadena, is also an enjoyable month, with average temperature ranging between max 61.7°F (16.5°C) and min 46.8°F (8.2°C). The coldest month is December, with an average high-temperature of 61.7°F (16.5°C) and an average low-temperature of 46.8°F (8.2°C). Weather in December »
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FAQ

How much does it rain in Pasadena?

In Pasadena, during the entire year, the rain falls for 50.1 days and collects up to 8.5" (216mm) of precipitation.

What is the month with the least sunshine in Pasadena?

January, February and December, with an average of 6.9h of sunshine, are months with the least sunshine in Pasadena, California.

What is the rainiest month in Pasadena?

February is the month with the most rainfall. Rain falls for 5.8 days and accumulates 1.77" (45mm) of precipitation.

What is the most humid month in Pasadena?

With an average relative humidity of 58%, June is the most humid month in Pasadena, California.

What is the driest month in Pasadena?

June is the month with the least rainfall in Pasadena, California. Rain falls for 1.1 days and accumulates 0.04" (1mm) of precipitation.

When are the longest days in Pasadena?

June has the longest days of the year in Pasadena, with an average of 14.4h of daylight.

What are the months with the most sunshine in Pasadena?

June and July, with an average of 12.1h of sunshine, are months with the most sunshine in Pasadena.

What is the month with the highest UV index in Pasadena?

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

What is the warmest month in Pasadena?

With an average high-temperature of 87.1°F (30.6°C) and an average low-temperature of 64.9°F (18.3°C), August is the warmest month.

What is the least humid month in Pasadena?

The least humid month is November, with an average relative humidity of 47%.

What is the coldest month in Pasadena?

December is the coldest month in Pasadena, California, with an average high-temperature of 61.7°F (16.5°C) and an average low-temperature of 46.8°F (8.2°C).

What is the month with the shortest days in Pasadena?

With an average of 9.9h of daylight, December has the shortest days of the year in Pasadena, California.

What is the month with the lowest UV index in Pasadena?

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

Average temperature
Pasadena, CA

Average temperature - Pasadena, CA

The warmest month (with the highest average high temperature) is August (87.1°F).
The month with the lowest average high temperature is December (61.7°F).

The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (46.6°F).

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Average pressure
Pasadena, CA

Average pressure - Pasadena, CA

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed
Pasadena, CA

Average wind speed - Pasadena, CA

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).

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Average rainfall
Pasadena, CA

Average rainfall - Pasadena, CA

The wettest month (with the highest rainfall) is February (1.77").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days
Pasadena, CA

Average rainfall days - Pasadena, CA

The month with the highest number of rainy days is March (7.8 days).
The month with the least rainy days is June (1.1 days).

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Average daylight / Average sunshine
Pasadena, CA

Average daylight / Average sunshine - Pasadena, CA

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

Months with the most sunshine are June and July (Average sunshine: 12.1h).
Months with the least sunshine are January, February and December (Average sunshine: 6.9).

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Average sunshine days
Pasadena, CA

Average sunshine days - Pasadena, CA

The month with the most sunshine days is June (27.5 days).
The month with the least sunshine days is February (21.5 days).

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Average visibility
Pasadena, CA

Average visibility - Pasadena, 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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