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 notes the coldest temperatures in January, with a high average of 31.3°F (-0.4°C) and a low of 18.5°F (-7.5°C).Humidity
In Petrolia, the average relative humidity in January is 87%.Rainfall
In January, the rain falls for 5.9 days. Throughout January, 0.98" (25mm) of precipitation is accumulated. Throughout the year, there are 140.7 rainfall days, and 15.43" (392mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. The month with the most snowfall is January, when snow falls for 13.8 days and typically aggregates up to 1.93" (49mm) of snow.Daylight
In Petrolia, the average length of the day in January is 9h and 38min.On the first day of January, sunrise is at 7:43 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:33 pm EST.
Sunshine
With an average of 2.3h of sunshine, January has the least sunshine of the year.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index, 1 in January, converts into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold is it in January?
What is the average humidity in January in Petrolia?
How many days does it rain in January?
What is the snowiest month?
How much does it snow in January?
How many hours of daylight does Petrolia have in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
What is the month with the lowest UV index?
What is the UV index intensity in January?
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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