May weather forecast
Petrolia, CA

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Weather in May

The last month of the spring, May, is an enjoyable month in Petrolia, California, with an average temperature ranging between min 44.1°F (6.7°C) and max 63°F (17.2°C).

Temperature

With May's arrival, Petrolia notes an average high-temperature of an enjoyable 63°F (17.2°C), closely following the trend of the preceding month. May's nights in Petrolia observe an average temperature of 44.1°F (6.7°C).

Humidity

In Petrolia, the average relative humidity in May is 79%.

Rainfall

In Petrolia, in May, during 8.1 rainfall days, 1.69" (43mm) of precipitation is typically accumulated. Throughout the year, in Petrolia, California, there are 110.9 rainfall days, and 28.27" (718mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Petrolia, the average length of the day in May is 14h and 26min.
On the first day of May in Petrolia, sunrise is at 6:15 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:40 pm PDT.

Sunshine

In Petrolia, the average sunshine in May is 9.9h.

UV index

The average daily maximum UV index in May in Petrolia is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 4 in May translates into the following instructions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Frequently asked questions

What is the temperature in May in Petrolia?

The high-temperature, in May, in Petrolia, records 63°F (17.2°C), while the low-temperature is 44.1°F (6.7°C).

What is the average humidity in May in Petrolia?

In May, the average relative humidity is 79%.

How much does it rain in Petrolia in May?

In Petrolia, in May, during 8.1 rainfall days, 1.69" (43mm) of precipitation is typically accumulated.

When it does not snow in Petrolia?

January, March through December are months without snowfall.

How many hours of daylight does Petrolia have in May?

The average day length in May in Petrolia, California, is 14h and 26min.

What time are sunrise and sunset in May in Petrolia?

On the first day of May in Petrolia, California, sunrise is at 6:15 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:40 pm PDT.

How many hours of sunshine does Petrolia have in May?

In Petrolia, California, the average sunshine duration in May is 9.9h.

How high is the UV index in May in Petrolia?

In Petrolia, California, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Petrolia, CA

Average temperature in May - Petrolia, CA
  • Average high temperature in May: 63°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 May: 44.1°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 May
Petrolia, CA

Average pressure in May - Petrolia, CA
  • Average pressure in May: 30.01"Hg

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

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Average wind speed in May
Petrolia, CA

Average wind speed in May - Petrolia, CA
  • Average wind speed in May: 7.2mph

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 May
Petrolia, CA

Average humidity in May - Petrolia, CA
  • Average humidity in May: 79%

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 May
Petrolia, CA

Average rainfall in May - Petrolia, CA
  • Average rainfall in May: 1.69"

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 May
Petrolia, CA

Average rainfall days in May - Petrolia, CA
  • Average rainfall days in May: 8.1 days

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

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Average snowfall in May
Petrolia, CA

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

The month with the highest snowfall is February (0.59").
The 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 May
Petrolia, CA

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

The month with the highest number of snowfall days is February (0.3 days).
The 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 May /
Average sunshine in May
Petrolia, CA

Average daylight in May / Average sunshine in May - Petrolia, CA
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in May: 9h and 5min

The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

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Average sunshine days in May
Petrolia, CA

Average sunshine days in May - Petrolia, CA
  • Average sunshine days in May: 21.1 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 May
Petrolia, CA

Average UV index in May - Petrolia, CA
  • Average UV index in May: 4

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

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Average cloud cover in May
Petrolia, CA

Average cloud cover in May - Petrolia, CA
  • Average cloud cover in May: 37

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 May
Petrolia, CA

Average visibility in May - Petrolia, CA
  • Average visibility in May: 5mi

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

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Petrolia, California, USA

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