Climate and monthly weather forecastPetrolia, CA
Climate and monthly weather forecast
Weather in January
January, like December, in Petrolia, California, is a cool winter month, with an average temperature varying between 54.3°F (12.4°C) and 41.4°F (5.2°C). Upon the beginning of January, Petrolia's high-temperatures register at a still cool 54.3°F (12.4°C), closely mirroring the preceding month. Weather in January »Weather in February
The last month of the winter, February, is another cool month in Petrolia, California, with an average temperature fluctuating between 39.7°F (4.3°C) and 53.6°F (12°C). In February, Petrolia notes an average high-temperature of a still fresh 53.6°F (12°C), hardly different from the preceding month. Weather in February »Weather in March
March, the first month of the spring in Petrolia, is also a fresh month, with an average temperature fluctuating between 40.3°F (4.6°C) and 54.9°F (12.7°C). A minimal variation is noted in Petrolia's average high-temperature at the onset of March, reaching a still fresh 54.9°F (12.7°C) from February's 53.6°F (12°C). Weather in March »Weather in April
April in Petrolia, California, is a moderate spring month, with an average temperature fluctuating between 58.5°F (14.7°C) and 41.5°F (5.3°C). With the start of April, Petrolia measures an average high-temperature of a moderate 58.5°F (14.7°C), not significantly differing from March's 54.9°F (12.7°C). Weather in April »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). 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. Weather in May »Weather in June
June, the first month of the summer in Petrolia, is still a comfortable month, with an average temperature ranging between max 67.8°F (19.9°C) and min 48.7°F (9.3°C). The shift into June records an average high-temperature of a still enjoyable 67.8°F (19.9°C), subtly varied from May's 63°F (17.2°C). Weather in June »Weather in July
July in Petrolia, California, is a pleasant summer month, with an average temperature varying between 51.4°F (10.8°C) and 73°F (22.8°C). Petrolia starts July with an average high-temperature of an agreeable 73°F (22.8°C), a minor shift from June's 67.8°F (19.9°C). Weather in July »Weather in August
August, the last month of the summer in Petrolia, is a moderately hot month, with an average temperature ranging between max 74.1°F (23.4°C) and min 51.8°F (11°C). The warmest temperatures occur during August, when averages reach a peak of 74.1°F (23.4°C) and a low of 51.8°F (11°C). Weather in August »Weather in September
The first month of the autumn, September, is also an agreeable month in Petrolia, California, with an average temperature fluctuating between 50.9°F (10.5°C) and 72.5°F (22.5°C). The start of September sees the average high-temperature at a pleasant 72.5°F (22.5°C), showing little difference from August's 74.1°F (23.4°C). Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Petrolia, California, with an average temperature varying between 66.2°F (19°C) and 47.8°F (8.8°C). In October, the meteorological conditions change slightly, with the average high-temperature moving from a pleasant 72.5°F (22.5°C) in September to an enjoyable 66.2°F (19°C). Weather in October »Weather in November
November, the last month of the autumn in Petrolia, is also a moderate month, with an average temperature varying between 58.1°F (14.5°C) and 43.5°F (6.4°C). The advent of November brings a subtle shift in temperature, with the average high moving from an enjoyable 66.2°F (19°C) in October to a mild 58.1°F (14.5°C). Weather in November »Weather in December
The first month of the winter, December, is also a fresh month in Petrolia, California, with temperature in the range of an average high of 52.9°F (11.6°C) and an average low of 40.1°F (4.5°C). December is the month that records the lowest temperatures, with averages ranging from a high of 52.9°F (11.6°C) to a low of 40.1°F (4.5°C). Weather in December »Updated: Feb 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Petrolia, during the entire year, the rain falls for 110.9 days and collects up to 28.27" (718mm) of precipitation.
In Petrolia, snow does not fall in January, March through December.
In Petrolia, during the entire year, snow aggregates up to 0.59" (15mm).
January through March, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Petrolia, California.
February is the only month when snow falls in Petrolia, California.
The month with the most snowfall in Petrolia, California, is February, when snow falls for 0.3 days and typically aggregates up to 0.59" (15mm) of snow.
With an average relative humidity of 83%, March is the most humid month.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
With an average of 15h and 0min of daylight, June has the longest days of the year.
June through August, with an average maximum UV index of 5, are months with the highest UV index.
July is the month with the least rainfall. Rain falls for 1.8 days and accumulates 0.08" (2mm) of precipitation.
July and August, with an average of 11.6h of sunshine, are months with the most sunshine in Petrolia.
In Petrolia, California, temperatures reach their average annual highs in August, measuring 74.1°F (23.4°C) and a minimum average of 51.8°F (11°C).
With an average relative humidity of 73%, September is the least humid month.
The coldest period in Petrolia, California, is December, when temperatures fluctuate between an average high of 52.9°F (11.6°C) and a low of 40.1°F (4.5°C).
December is the month with the most rainfall in Petrolia, California. Rain falls for 14.8 days and accumulates 4.96" (126mm) of precipitation.
The month with the shortest days in Petrolia is December, with an average of 9h and 24min of daylight.
The month with the least sunshine in Petrolia is December, with an average of 5h of sunshine.
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).
Average pressure
Petrolia, CA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
30.06"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.98"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.11"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).
Average wind speed
Petrolia, CA
- Average wind speed in January:
6.8mph - Average wind speed in February:
7.5mph - Average wind speed in March:
7.6mph - Average wind speed in April:
7.4mph - Average wind speed in May:
7.2mph - Average wind speed in June:
7.7mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
5.9mph - Average wind speed in September:
6mph - Average wind speed in October:
6.5mph - Average wind speed in November:
6.6mph - Average wind speed in December:
7mph
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).
Average humidity
Petrolia, CA
The month with the highest relative humidity is March (83%).
The month with the lowest relative humidity is September (73%).
Average rainfall
Petrolia, CA
- Average rainfall in January:
4.41" - Average rainfall in February:
3.98" - Average rainfall in March:
4.53" - Average rainfall in April:
2.28" - Average rainfall in May:
1.69" - Average rainfall in June:
0.51"
- Average rainfall in July:
0.08" - Average rainfall in August:
0.12" - Average rainfall in September:
0.59" - Average rainfall in October:
1.89" - Average rainfall in November:
3.23" - Average rainfall in December:
4.96"
The wettest month (with the highest rainfall) is December (4.96").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days
Petrolia, CA
- Average rainfall days in January:
13.8 days - Average rainfall days in February:
13.3 days - Average rainfall days in March:
17.3 days - Average rainfall days in April:
12.3 days - Average rainfall days in May:
8.1 days - Average rainfall days in June:
4.6 days
- Average rainfall days in July:
1.8 days - Average rainfall days in August:
1.8 days - Average rainfall days in September:
4 days - Average rainfall days in October:
8 days - Average rainfall days in November:
11.1 days - Average rainfall days in December:
14.8 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).
Average snowfall
Petrolia, CA
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").
Average snowfall days
Petrolia, CA
- Average snowfall days in January:
0 days - Average snowfall days in February:
0.3 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0.1 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).
Average daylight / Average sunshine
Petrolia, CA
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
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 January:
5h and 12min - Average sunshine in February:
5h and 24min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 42min - Average sunshine in May:
9h and 54min - Average sunshine in June:
10h and 54min
- Average sunshine in July:
11h and 36min - Average sunshine in August:
11h and 36min - Average sunshine in September:
10h and 12min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 54min - Average sunshine in December:
5h and 0min
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).
Average sunshine days
Petrolia, CA
- Average sunshine days in January:
15.6 days - Average sunshine days in February:
14.1 days - Average sunshine days in March:
11.9 days - Average sunshine days in April:
15.4 days - Average sunshine days in May:
21.1 days - Average sunshine days in June:
23.8 days
- Average sunshine days in July:
28.5 days - Average sunshine days in August:
27.9 days - Average sunshine days in September:
25.8 days - Average sunshine days in October:
22.1 days - Average sunshine days in November:
17.3 days - Average sunshine days in December:
15.1 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).
Average UV index
Petrolia, CA
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).
Average cloud cover
Petrolia, CA
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility
Petrolia, CA
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).
