Climate and monthly weather forecast
Sebastopol, CA

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Weather in January

January, like December, is another mild winter month in Sebastopol, California, with an average temperature varying between 43.2°F (6.2°C) and 57.2°F (14°C). Upon the onset of January, Sebastopol witnesses an average high-temperature of a still mild 57.2°F (14°C), showing a close resemblance to the prior month. Weather in January »

Weather in February

The last month of the winter, February, is another refreshing month in Sebastopol, California, with temperature in the range of an average low of 42.8°F (6°C) and an average high of 58.8°F (14.9°C). Sebastopol, California, registers an average high-temperature of a still moderate 58.8°F (14.9°C) at the commencement of February, closely related to the preceding month. Weather in February »

Weather in March

The first month of the spring, March, is still a mild month in Sebastopol, California, with an average temperature varying between 60.4°F (15.8°C) and 43.5°F (6.4°C). The transition from February to March sees an average high-temperature of a still refreshing 60.4°F (15.8°C), indicating a minor variance from the prior month. Weather in March »

Weather in April

April is a comfortable spring month in Sebastopol, California, with an average temperature ranging between max 64.9°F (18.3°C) and min 45.5°F (7.5°C). Sebastopol, California, experiences an average high-temperature of a comfortable 64.9°F (18.3°C) in April, marking an insignificant shift from 60.4°F (15.8°C) in March. Weather in April »

Weather in May

May, the last month of the spring in Sebastopol, is a pleasant month, with an average temperature varying between 48.6°F (9.2°C) and 69.1°F (20.6°C). The advent of May reveals an average high-temperature of an agreeable 69.1°F (20.6°C), showing minimal difference from the prior month. Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Sebastopol, California, with an average temperature ranging between min 53.1°F (11.7°C) and max 76.3°F (24.6°C). June introduces a marginal temperature uplift, with average high-temperatures adjusting from May's pleasant 69.1°F (20.6°C) to a moderately hot 76.3°F (24.6°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Sebastopol, California, with temperature in the range of an average high of 79.3°F (26.3°C) and an average low of 54.1°F (12.3°C). Sebastopol experiences an average high-temperature of a still warm 79.3°F (26.3°C) with the onset of July, subtly varied from June's 76.3°F (24.6°C). Weather in July »

Weather in August

August, the last month of the summer in Sebastopol, is another warm month, with temperature in the range of an average low of 54.7°F (12.6°C) and an average high of 79.7°F (26.5°C). August is the warmest month, exhibiting average temperatures of 79.7°F (26.5°C) at the peak and 54.7°F (12.6°C) at the base. Weather in August »

Weather in September

September, the first month of the autumn in Sebastopol, is still a warm month, with temperature in the range of an average low of 54.7°F (12.6°C) and an average high of 79°F (26.1°C). The advent of September brings an average high-temperature of a still moderately hot 79°F (26.1°C), almost identical to the preceding month. Weather in September »

Weather in October

October, like September, is another pleasant autumn month in Sebastopol, California, with an average temperature fluctuating between 72.3°F (22.4°C) and 51.8°F (11°C). In October, the meteorological conditions change slightly, with the average high-temperature moving from a warm 79°F (26.1°C) in September to a pleasant 72.3°F (22.4°C). Weather in October »

Weather in November

The last month of the autumn, November, is another comfortable month in Sebastopol, California, with an average temperature ranging between max 63.1°F (17.3°C) and min 46°F (7.8°C). The onset of November introduces a moderate change in Sebastopol's weather, with average high-temperatures falling from October's agreeable 72.3°F (22.4°C) to an enjoyable 63.1°F (17.3°C). Weather in November »

Weather in December

December, the first month of the winter in Sebastopol, is also a moderate month, with an average temperature fluctuating between 55.6°F (13.1°C) and 41.9°F (5.5°C). Sebastopol's temperature records reveal December as the coldest month, marked by average highs of 55.6°F (13.1°C) and lows of 41.9°F (5.5°C). Weather in December »
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Frequently asked questions

How much does it rain in Sebastopol?

In Sebastopol, during the entire year, the rain falls for 72.8 days and collects up to 12.01" (305mm) of precipitation.

What are the months with the lowest UV index in Sebastopol?

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

What is the rainiest month in Sebastopol?

The month with the most rainfall in Sebastopol, California, is February, when the rain falls for 9.1 days and typically aggregates up to 2.64" (67mm) of precipitation.

What is the most humid month in Sebastopol?

With an average relative humidity of 77%, March is the most humid month.

When is Daylight Saving Time (DST) in Sebastopol?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Sebastopol, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

When are the longest days in Sebastopol?

June has the longest days of the year, with an average of 14h and 48min of daylight.

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

With an average maximum UV index of 6, June is the month with the highest UV index.

What is the driest month in Sebastopol?

The months with the least rainfall are July and August Rain falls for 1.5 days and accumulates 0.04" (1mm) of rain.

What month has the most sunshine in Sebastopol?

The month with the most sunshine in Sebastopol is July, with an average of 11.9h of sunshine.

What time of the year is the hottest in Sebastopol?

In Sebastopol, August is known for its average highest temperatures, reaching a high of 79.7°F (26.5°C) and a low of 54.7°F (12.6°C).

What is the least humid month in Sebastopol?

With an average relative humidity of 63%, September is the least humid month.

What part of the year is the coldest in Sebastopol?

Sebastopol's December weather, marked by an average high temperature of 55.6°F (13.1°C) and an average low temperature of 41.9°F (5.5°C), is the coldest in the year.

What is the month with the shortest days in Sebastopol?

December has the shortest days of the year in Sebastopol, California, with an average of 9h and 30min of daylight.

What is the month with the least sunshine in Sebastopol?

December has the least sunshine of the year in Sebastopol, with an average of 5.7h of sunshine.

Average temperature
Sebastopol, CA

Average temperature - Sebastopol, CA

The warmest month (with the highest average high temperature) is August (79.7°F).
The month with the lowest average high temperature is December (55.6°F).

The months with the highest average low temperature are August and September (54.7°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).

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Average pressure
Sebastopol, CA

Average pressure - Sebastopol, CA

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).

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Average wind speed
Sebastopol, CA

Average wind speed - Sebastopol, CA

The windiest month (with the highest average wind speed) is May (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.9mph).

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Average rainfall
Sebastopol, CA

Average rainfall - Sebastopol, CA

The wettest month (with the highest rainfall) is February (2.64").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days
Sebastopol, CA

Average rainfall days - Sebastopol, CA

The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.8 days).

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Average daylight / Average sunshine
Sebastopol, CA

Average daylight / Average sunshine - Sebastopol, CA

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days
Sebastopol, CA

Average sunshine days - Sebastopol, CA

The month with the most sunshine days is July (27.2 days).
The month with the least sunshine days is March (17.1 days).

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Average UV index
Sebastopol, CA

Average UV index - Sebastopol, CA

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average visibility
Sebastopol, CA

Average visibility - Sebastopol, CA

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

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Sebastopol, California, USA

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