Monthly weather forecast and climate
Petrolia, CA

Weather in January

January, like December, in Petrolia, California, is another fresh winter month, with average temperature ranging between min 41.4°F (5.2°C) and max 54.3°F (12.4°C). In January, the average high-temperature is essentially the same as in December - a still cool 54.3°F (12.4°C). Weather in January »

Weather in February

February, the last month of the winter, in Petrolia, is also a fresh month, with average temperature varying between 39.7°F (4.3°C) and 53.6°F (12°C). In Petrolia, the average high-temperature is relatively the same as in January - a still fresh 53.6°F (12°C). Weather in February »

Weather in March

March, the first month of the spring, in Petrolia, is still a cool month, with average temperature ranging between min 40.3°F (4.6°C) and max 54.9°F (12.7°C). In March, the average high-temperature is practically the same as in February - a still fresh 54.9°F (12.7°C). Weather in March »

Weather in April

April in Petrolia, California, is a moderate spring month, with temperature in the range of an average high of 58.5°F (14.7°C) and an average low of 41.5°F (5.3°C). In Petrolia, California, the average high-temperature is relatively the same as in March - a moderate 58.5°F (14.7°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Petrolia, California, with temperature in the range of an average high of 63°F (17.2°C) and an average low of 44.1°F (6.7°C). In May, the average high-temperature is relatively the same as in April - a comfortable 63°F (17.2°C). Weather in May »

Weather in June

The first month of the summer, June, is also an enjoyable month in Petrolia, California, with average temperature ranging between min 48.7°F (9.3°C) and max 67.8°F (19.9°C). In June, the average high-temperature is almost the same as in May - a still comfortable 67.8°F (19.9°C). Weather in June »

Weather in July

July in Petrolia, California, is a pleasant summer month, with average temperature varying between 51.4°F (10.8°C) and 73°F (22.8°C). In July, the average high-temperature is almost the same as in June - an agreeable 73°F (22.8°C). Weather in July »

Weather in August

The last month of the summer, August, is a moderately hot month in Petrolia, California, with temperature in the range of an average low of 51.8°F (11°C) and an average high of 74.1°F (23.4°C). The warmest month is August, with an average high-temperature of 74.1°F (23.4°C) and an average low-temperature of 51.8°F (11°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Petrolia, California, with average temperature varying between 50.9°F (10.5°C) and 72.5°F (22.5°C). In September, the average high-temperature is almost the same as in August - a pleasant 72.5°F (22.5°C). Weather in September »

Weather in October

October, like September, in Petrolia, California, is another comfortable autumn month, with average temperature fluctuating between 47.8°F (8.8°C) and 66.2°F (19°C). In Petrolia, the average high-temperature in October slightly decreases, from an agreeable 72.5°F (22.5°C) in September, to an enjoyable 66.2°F (19°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a moderate month in Petrolia, California, with average temperature ranging between max 58.1°F (14.5°C) and min 43.5°F (6.4°C). In Petrolia, the average high-temperature in November slightly decreases, from a comfortable 66.2°F (19°C) in October, to a mild 58.1°F (14.5°C). Weather in November »

Weather in December

December, the first month of the winter, in Petrolia, is still a cool month, with average temperature fluctuating between 40.1°F (4.5°C) and 52.9°F (11.6°C). December is the coldest month, with an average high-temperature of 52.9°F (11.6°C) and an average low-temperature of 40.1°F (4.5°C). Weather in December »
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FAQ

How much does it rain in Petrolia?

In Petrolia, California, during the entire year, the rain falls for 110.9 days and collects up to 28.27" (718mm) of precipitation.

How much does it snow in Petrolia?

Throughout the year, 0.59" (15mm) of snow is accumulated.

When it does not snow in Petrolia?

In Petrolia snow does not fall in January, March through December.

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

January through March, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Petrolia, California.

When does it snow in Petrolia?

The only month with snowfall is February.

What is the snowiest month in Petrolia?

February is the month with the most snowfall in Petrolia, California. Snow falls for 0.3 days and accumulates 0.59" (15mm) of snow.

What is the most humid month in Petrolia?

With an average relative humidity of 83%, March is the most humid month.

When are the longest days in Petrolia?

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

When is the highest UV index in Petrolia?

Months with the highest UV index are June through August, with an average maximum UV index of 5.

What is the driest month in Petrolia?

July is the month with the least rainfall. Rain falls for 1.8 days and accumulates 0.08" (2mm) of precipitation.

What are the months with the most sunshine in Petrolia?

July and August, with an average of 11.6h of sunshine, are months with the most sunshine in Petrolia.

What is the warmest month in Petrolia?

With an average high-temperature of 74.1°F (23.4°C) and an average low-temperature of 51.8°F (11°C), August is the warmest month in Petrolia.

What is the least humid month in Petrolia?

With an average relative humidity of 73%, September is the least humid month.

What is the coldest month in Petrolia?

The coldest month in Petrolia is December, with an average high-temperature of 52.9°F (11.6°C) and an average low-temperature of 40.1°F (4.5°C).

What is the rainiest month in Petrolia?

December is the month with the most rainfall. Rain falls for 14.8 days and accumulates 4.96" (126mm) of precipitation.

What is the month with the shortest days in Petrolia?

With an average of 9.3h of daylight, December has the shortest days of the year in Petrolia.

What is the month with the least sunshine in Petrolia?

With an average of 5h of sunshine, December has the least sunshine of the year.

Average temperature
Petrolia, CA

Average temperature - Petrolia, CA

The warmest month (with the highest average high temperature) is August (74.1°F).
The month with the lowest average high temperature is December (52.9°F).

The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is February (39.7°F).

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Average pressure
Petrolia, CA

Average pressure - Petrolia, CA

The month with the highest atmospheric pressure is January (30.13").
Months with the lowest atmospheric pressure are August and September (29.96").

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Average wind speed
Petrolia, CA

Average wind speed - Petrolia, CA

The windiest month (with the highest average wind speed) is June (7.7mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

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Average rainfall
Petrolia, CA

Average rainfall - Petrolia, CA

The wettest month (with the highest rainfall) is December (4.96").
The driest month (with the least rainfall) is July (0.08").

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Average rainfall days
Petrolia, CA

Average rainfall days - Petrolia, CA

The month with the highest number of rainy days is March (17.3 days).
Months with the least rainy days are July and August (1.8 days).

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Average snowfall
Petrolia, CA

Average snowfall - Petrolia, CA

The month with the highest snowfall is February (0.59").
Months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days
Petrolia, CA

Average snowfall days - Petrolia, CA

The month with the highest number of snowfall days is February (0.3 days).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight / Average sunshine
Petrolia, CA

Average daylight / Average sunshine - Petrolia, CA

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

Months with the most sunshine are July and August (Average sunshine: 11.6h).
The month with the least sunshine is December (Average sunshine: 5h).

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Average sunshine days
Petrolia, CA

Average sunshine days - Petrolia, CA

The month with the most sunshine days is July (28.5 days).
The month with the least sunshine days is March (11.9 days).

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Average UV index
Petrolia, CA

Average UV index - Petrolia, CA

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, March, November and December (UV index 3).

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Average visibility
Petrolia, CA

Average visibility - Petrolia, CA

Months with the highest visibility are January, February, March, April, June, September, October, November and December (6mi).
Months with the lowest visibility are May, July and August (5mi).

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