Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
Petrolia's coldest weather arrives in January, when temperatures average a high of 31.3°F (-0.4°C) and a low of 18.5°F (-7.5°C).Humidity
In January, the average relative humidity in Petrolia is 87%.Rainfall
In Petrolia, in January, during 5.9 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, there are 140.7 rainfall days, and 15.43" (392mm) of precipitation is accumulated.Snowfall
Months with snowfall in Petrolia, Pennsylvania, are January through May, November and December. January is the month with the most snowfall. Snow falls for 13.8 days and accumulates 1.93" (49mm) of snow.Daylight
The average length of the day in January in Petrolia, Pennsylvania, is 9h and 38min.On the first day of the month, sunrise is at 7:43 am and sunset at 5:00 pm. On the last day of January, in Petrolia, Pennsylvania, sunrise is at 7:30 am and sunset at 5:33 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 2.3h of sunshine.UV index
The months with the lowest UV index in Petrolia are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 1 during January translates into these guidelines:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
What is the coldest time of year in Petrolia?
How cold is it in Petrolia in January?
What is the average humidity in January in Petrolia?
How much does it rain in Petrolia in January?
When does it snow the most in Petrolia?
How many days does it snow in January in Petrolia?
What is the average length of the day in January in Petrolia?
When are sunrise and sunset in January in Petrolia?
What is the month with the least sunshine in Petrolia?
How many hours of sunshine does Petrolia have in January?
When is the lowest UV index in Petrolia?
What is the UV index reading in January in Petrolia?
Average temperature in January
Petrolia, PA
- Average high temperature in January: 31.3°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in January: 18.5°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in January
Petrolia, PA
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Petrolia, PA
- Average wind speed in January: 8.2mph
The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in January
Petrolia, PA
- Average humidity in January: 87%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April, June, July and August (78%).
Average rainfall in January
Petrolia, PA
- Average rainfall in January: 0.98"
The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is November (0.87").
Average rainfall days in January
Petrolia, PA
- Average rainfall days in January: 5.9 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in January
Petrolia, PA
- Average snowfall in January: 1.93"
The month with the highest snowfall is January (1.93").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in January
Petrolia, PA
- Average snowfall days in January: 13.8 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Petrolia, PA
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 2h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in January
Petrolia, PA
- Average sunshine days in January: 14.3 days
The month with the most sunshine days is December (17.1 days).
The month with the least sunshine days is July (12.2 days).
Average UV index in January
Petrolia, PA
- Average UV index in January: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Petrolia, PA
- Average cloud cover in January: 75
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in January
Petrolia, PA
- Average visibility in January: 4mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Petrolia, Pennsylvania, USA
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