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

Monthly weather forecast and climate
Portola, CA

January, the same as December, in Portola, California, is a frosty winter month, with average temperature ranging between max 42.8°F (6°C) and min 17.2°F (-8.2°C). January is the coldest month, with an average high-temperature of 42.8°F (6°C) and an average low-temperature of 17.2°F (-8.2°C). Weather in January »
February, the last month of the winter, in Portola, is also a frosty month, with average temperature ranging between max 46.2°F (7.9°C) and min 20.1°F (-6.6°C). In February, the average high-temperature is essentially the same as in January - a still frosty 46.2°F (7.9°C). Weather in February »

March, the first month of the spring, in Portola, is a fresh month, with average temperature ranging between min 23.7°F (-4.6°C) and max 52°F (11.1°C). In March, the average high-temperature marginally rises, from a frosty 46.2°F (7.9°C) in February, to a cool 52°F (11.1°C). Weather in March »

April in Portola, California, is a moderate spring month, with average temperature ranging between max 59°F (15°C) and min 27.3°F (-2.6°C). In Portola, California, the average high-temperature in April slightly increases, from a fresh 52°F (11.1°C) in March, to a mild 59°F (15°C). Weather in April »

May, the last month of the spring, in Portola, is an enjoyable month, with temperature in the range of an average high of 67.6°F (19.8°C) and an average low of 32.5°F (0.3°C). In May, the average high-temperature marginally rises, from a mild 59°F (15°C) in April, to a comfortable 67.6°F (19.8°C). Weather in May »

June, the first month of the summer, in Portola, is a warm month, with average temperature ranging between max 76.8°F (24.9°C) and min 37.2°F (2.9°C). In Portola, California, the average high-temperature increases, from an enjoyable 67.6°F (19.8°C) in May, to a moderately hot 76.8°F (24.9°C). Weather in June »

July in Portola, California, is a hot summer month, with average temperature fluctuating between 40.8°F (4.9°C) and 86.2°F (30.1°C). With an average high-temperature of 86.2°F (30.1°C) and an average low-temperature of 40.8°F (4.9°C), July is the warmest month. Weather in July »

August, the last month of the summer, in Portola, is another warm month, with average temperature ranging between max 84.4°F (29.1°C) and min 38.7°F (3.7°C). In Portola, the average high-temperature in August is relatively the same as in July - a warm 84.4°F (29.1°C). Weather in August »

September, the first month of the autumn, in Portola, is still a warm month, with temperature in the range of an average low of 34°F (1.1°C) and an average high of 78.1°F (25.6°C). In September, the average high-temperature marginally drops, from 84.4°F (29.1°C) in August, to a still warm 78.1°F (25.6°C). Weather in September »

October, like September, in Portola, California, is another comfortable autumn month, with average temperature varying between 28°F (-2.2°C) and 66.9°F (19.4°C). In Portola, the average high-temperature decreases, from a warm 78.1°F (25.6°C) in September, to an enjoyable 66.9°F (19.4°C). Weather in October »

The last month of the autumn, November, is also a fresh month in Portola, California, with average temperature ranging between min 22.8°F (-5.1°C) and max 53.4°F (11.9°C). In November, the average high-temperature drops, from an enjoyable 66.9°F (19.4°C) in October, to a cool 53.4°F (11.9°C). Weather in November »

The first month of the winter, December, is still a chilly month in Portola, California, with average temperature varying between 44.4°F (6.9°C) and 18.5°F (-7.5°C). In December, the average high-temperature drops, from a cool 53.4°F (11.9°C) in November, to a chilly 44.4°F (6.9°C). Weather in December »

What is the coldest month in Portola?

January is the coldest month, with an average high-temperature of 42.8°F (6°C) and an average low-temperature of 17.2°F (-8.2°C).

How many days does it rain in Portola?

Throughout the year, in Portola, there are 58 rainfall days, and 20.5" (520.3mm) of precipitation is accumulated.

What is the wettest month in Portola?

The month with the most rainfall is January when the rain falls for 8 days and typically aggregates up to 3.7" (93.2mm) of precipitation.

When does it snow in Portola?

Months with snowfall in Portola are January through May, September through December.

How much does it snow in Portola?

In Portola, California, during the entire year, snow aggregates up to 60.6" (1539.3mm).

When does it snow the most in Portola?

January is the month with the most snowfall, with 16" (406.4mm) of accumulated snow.

When are the longest days in Portola?

The month with the longest days in Portola is June, with an average of 15h of daylight.

What is the warmest month in Portola?

With an average high-temperature of 86.2°F (30.1°C) and an average low-temperature of 40.8°F (4.9°C), July is the warmest month in Portola.

What is the driest month in Portola?

The month with the least rainfall in Portola, California, is August when the rain falls for 1 days and typically collects 0.3" (6.4mm) of precipitation.

What is the month with the shortest days in Portola?

With an average of 9.4h of daylight, December has the shortest days of the year.
Average rainfall - Portola, CA
Average rainfall days - Portola, CA

Months with the highest number of rainy days are January, February and March (8 days).
Months with the lowest number of rainy days are July and August (1 days).

Average daylight - Portola, CA