Clearlake
California, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Clearlake, CA

A scenic view of the reflection and a long footbridge over the marina in Clearlake, California
A scenic view of the reflection and a long footbridge over the marina in Clearlake, California
January, like December, in Clearlake, California, is another fresh winter month, with temperature in the range of an average low of 39°F (3.9°C) and an average high of 54.7°F (12.6°C). In January, the average high-temperature is essentially the same as in December - a still cool 54.7°F (12.6°C). Weather in January »

February, the last month of the winter, in Clearlake, is a mild month, with average temperature fluctuating between 38.7°F (3.7°C) and 56.3°F (13.5°C). In February, the average high-temperature is practically the same as in January - a moderate 56.3°F (13.5°C). Weather in February »

The first month of the spring, March, is also a moderate month in Clearlake, California, with average temperature ranging between min 40.1°F (4.5°C) and max 58.6°F (14.8°C). In March, the average high-temperature is almost the same as in February - a still mild 58.6°F (14.8°C). Weather in March »

April in Clearlake, California, is a comfortable spring month, with average temperature ranging between min 43.2°F (6.2°C) and max 66°F (18.9°C). In April, the average high-temperature marginally rises, from a mild 58.6°F (14.8°C) in March, to an enjoyable 66°F (18.9°C). Weather in April »

May, the last month of the spring, in Clearlake, is a moderately hot month, with temperature in the range of an average high of 73.9°F (23.3°C) and an average low of 48.2°F (9°C). In May, the average high-temperature slightly increases, from a comfortable 66°F (18.9°C) in April, to a warm 73.9°F (23.3°C). Weather in May »

June, the first month of the summer, in Clearlake, is still a warm month, with average temperature fluctuating between 83.8°F (28.8°C) and 55.4°F (13°C). In Clearlake, the average high-temperature increases, from a moderately hot 73.9°F (23.3°C) in May, to a still warm 83.8°F (28.8°C). Weather in June »

July is a tropical summer month in Clearlake, California, with average temperature fluctuating between 91.2°F (32.9°C) and 58.8°F (14.9°C). With an average high-temperature of 91.2°F (32.9°C) and an average low-temperature of 58.8°F (14.9°C), July is the warmest month. In July, the average heat index is calculated to a tropical 94.1°F (34.5°C). Weather in July »

August, the last month of the summer, in Clearlake, is another hot month, with average temperature ranging between min 58.3°F (14.6°C) and max 90.1°F (32.3°C). In August, the average high-temperature is practically the same as in July - a still hot 90.1°F (32.3°C). Weather in August »

The first month of the autumn, September, is still a warm month in Clearlake, California, with average temperature fluctuating between 85.1°F (29.5°C) and 55.8°F (13.2°C). In Clearlake, the average high-temperature in September is almost the same as in August - a warm 85.1°F (29.5°C). Weather in September »

October, the same as September, is a moderately hot autumn month in Clearlake, California, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 73.8°F (23.2°C). In Clearlake, California, the average high-temperature drops, from a moderately hot 85.1°F (29.5°C) in September, to a still warm 73.8°F (23.2°C). Weather in October »

November, the last month of the autumn, in Clearlake, is another comfortable month, with temperature in the range of an average high of 61°F (16.1°C) and an average low of 42.4°F (5.8°C). In Clearlake, California, the average high-temperature decreases, from a moderately hot 73.8°F (23.2°C) in October, to an enjoyable 61°F (16.1°C). Weather in November »

The first month of the winter, December, is also a fresh month in Clearlake, California, with temperature in the range of an average high of 52.7°F (11.5°C) and an average low of 38.1°F (3.4°C). The coldest month is December, with an average high-temperature of 52.7°F (11.5°C) and an average low-temperature of 38.1°F (3.4°C). Weather in December »

How much does it rain in Clearlake?

Throughout the year, in Clearlake, there are 79.8 rainfall days, and 17.44" (443mm) of precipitation is accumulated.

When does it snow in Clearlake?

January through March, November and December are months with snowfall.

How much does it snow in Clearlake?

In Clearlake, during the entire year, snow falls for 1.8 days, and aggregates up to 0.98" (25mm) of snow.

What is the wettest month in Clearlake?

The month with the most rainfall in Clearlake is February when the rain falls for 9.3 days and typically aggregates up to 3.7" (94mm) of precipitation.

When does it snow the most in Clearlake?

February is the month with the most snowfall. Snow falls for 0.9 days and accumulates 0.51" (13mm) of snow.

What is the most humid month in Clearlake?

With an average relative humidity of 74%, March is the most humid month in Clearlake.

When it does not snow in Clearlake?

April through October are months without snowfall in Clearlake, California.

When are the longest days in Clearlake?

June has the longest days of the year in Clearlake, with an average of 14.9h of daylight.

What is the warmest month in Clearlake?

July is the warmest month, with an average high-temperature of 91.2°F (32.9°C) and an average low-temperature of 58.8°F (14.9°C).

What is the least humid month in Clearlake?

With an average relative humidity of 44%, July is the least humid month in Clearlake.

What is the driest month in Clearlake?

July and August are months with the least rain in Clearlake, California, when the rain falls for 1.1 days and typically aggregates up to 0.04" (1mm) of rain.

What month has the most sunshine in Clearlake?

With an average of 12h of sunshine, July has the most sunshine of the year in Clearlake, California.

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

With an average maximum UV index of 7, July is the month with the highest UV index in Clearlake, California.

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

November and December, with an average maximum UV index of 2, are months with the lowest UV index in Clearlake.

What is the coldest month in Clearlake?

December is the coldest month, with an average high-temperature of 52.7°F (11.5°C) and an average low-temperature of 38.1°F (3.4°C).

What is the month with the shortest days in Clearlake?

With an average of 9.5h of daylight, December has the shortest days of the year in Clearlake.

What is the month with the least sunshine in Clearlake?

December has the least sunshine of the year in Clearlake, California, with an average of 5.3h of sunshine.
Average temperature - Clearlake, CA
Average rainfall - Clearlake, CA

The wettest month (with the highest rainfall) is February (3.7").
Driest months (with the lowest rainfall) are July and August (0.04").

Average rainfall days - Clearlake, CA

The month with the highest number of rainy days is March (13.9 days).
Months with the lowest number of rainy days are July and August (1.1 days).

Average snowfall - Clearlake, CA

The month with the highest snowfall is February (0.51").
Months with the lowest snowfall are April, May, June, July, August, September and October (0").

Average snowfall days - Clearlake, CA

The month with the highest number of snowfall days is February (0.9 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight / Average sunshine - Clearlake, CA