January 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).

Temperature

In January, the average high-temperature is essentially the same as in December - a still cool 54.3°F (12.4°C). The average low-temperature, in January, is 41.4°F (5.2°C).

Humidity

The average relative humidity in January is 80%.

Rainfall

In Petrolia, in January, it is raining for 13.8 days, with typically 4.41" (112mm) of accumulated precipitation. Throughout the year, in Petrolia, there are 110.9 rainfall days, and 28.27" (718mm) of precipitation is accumulated.

Snowfall

January, March through December are months without snowfall.

Daylight

In January, the average length of the day is 9.7h.

Sunshine

In January, the average sunshine in Petrolia, California, is 5.2h.

UV index

Months with the lowest UV index in Petrolia, California, are January through March, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: In January, the average maximum UV index of 3 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in January in Petrolia?

In January, in Petrolia, California, the average high-temperature is 54.3°F (12.4°C), and the average low-temperature is 41.4°F (5.2°C).

What is the average humidity in January in Petrolia?

In Petrolia, California, the average relative humidity in January is 80%.

How much does it rain in Petrolia in January?

In Petrolia, in January, it is raining for 13.8 days, with typically 4.41" (112mm) of accumulated precipitation.

Does it snow in Petrolia in January?

In Petrolia, California, in January, it doesn't snow. In February, it regularly snows.

When it does not snow in Petrolia?

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

How many hours of daylight does Petrolia have in January?

In Petrolia, the average length of the day in January is 9.7h.

How many hours of sunshine does Petrolia have in January?

The average sunshine in January in Petrolia is 5.2h.

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.

How high is the UV index in January in Petrolia?

In January, the average daily maximum UV index in Petrolia is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in January
Petrolia, CA

Average temperature in January - Petrolia, CA
  • Average high temperature in January: 54.3°F

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).

  • Average low temperature in January: 41.4°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 in January
Petrolia, CA

Average pressure in January - Petrolia, CA
  • Average pressure in January: 30.13"

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 in January
Petrolia, CA

Average wind speed in January - Petrolia, CA
  • Average wind speed in January: 6.8mph

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 humidity in January
Petrolia, CA

Average humidity in January - Petrolia, CA
  • Average humidity in January: 80%

The month with the highest relative humidity is March (83%).
The month with the lowest relative humidity is September (73%).

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Average rainfall in January
Petrolia, CA

Average rainfall in January - Petrolia, CA
  • Average rainfall in January: 4.41"

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 in January
Petrolia, CA

Average rainfall days in January - Petrolia, CA
  • Average rainfall days in January: 13.8 days

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 in January
Petrolia, CA

Average snowfall in January - Petrolia, CA
  • Average snowfall in January: 0"

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 in January
Petrolia, CA

Average snowfall days in January - Petrolia, CA
  • Average snowfall days in January: 0 days

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 in January /
Average sunshine in January
Petrolia, CA

Average daylight in January / Average sunshine in January - Petrolia, CA
  • Average daylight in January: 9.7h

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

  • Average sunshine in January: 5.2h

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 in January
Petrolia, CA

Average sunshine days in January - Petrolia, CA
  • Average sunshine days in January: 15.6 days

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 in January
Petrolia, CA

Average UV index in January - Petrolia, CA
  • Average UV index in January: 3

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 cloud cover in January
Petrolia, CA

Average cloud cover in January - Petrolia, CA
  • Average cloud cover in January: 45

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in January
Petrolia, CA

Average visibility in January - Petrolia, CA
  • Average visibility in January: 6mi

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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