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
January is the coldest month, with an average high-temperature of 31.6°F (-0.2°C) and an average low-temperature of 19.8°F (-6.8°C).Humidity
The average relative humidity in January is 81%.Rainfall
In Petersburg, in January, during 10.8 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. In Petersburg, during the entire year, the rain falls for 166.2 days and collects up to 23.86" (606mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Petersburg. January is the month with the most snowfall. Snow falls for 15 days and accumulates 4.49" (114mm) of snow.Daylight
The average length of the day in January is 9h and 40min.On the first day of January, sunrise is at 7:35 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:28 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 3.8h of sunshine.UV index
In Petersburg, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In January, the average maximum UV index of 2 translates into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Petersburg?
How cold is January?
What is the average humidity in January?
How much does it rain in January?
What is the snowiest month?
How much does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
What is the month with the least sunshine in Petersburg?
How long on average sun shines in January?
How high is the UV index in January?
Average temperature in January
Petersburg, PA
- Average high temperature in January: 31.6°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in January: 19.8°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in January
Petersburg, 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 (29.95"Hg).
Average wind speed in January
Petersburg, PA
- Average wind speed in January: 8.4mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in January
Petersburg, PA
- Average humidity in January: 81%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is July (76%).
Average rainfall in January
Petersburg, PA
- Average rainfall in January: 1.73"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is November (1.5").
Average rainfall days in January
Petersburg, PA
- Average rainfall days in January: 10.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (10.3 days).
Average snowfall in January
Petersburg, PA
- Average snowfall in January: 4.49"
The month with the highest snowfall is January (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Petersburg, PA
- Average snowfall days in January: 15 days
The month with the highest number of snowfall days is January (15 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Petersburg, PA
- Average daylight in January: 9h and 4min
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 18min).
- Average sunshine in January: 3h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in January
Petersburg, PA
- Average sunshine days in January: 11.8 days
The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is February (9.5 days).
Average UV index in January
Petersburg, PA
- Average UV index in January: 2
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Petersburg, PA
- Average cloud cover in January: 62
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in January
Petersburg, PA
- Average visibility in January: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Petersburg, Pennsylvania, USA
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