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, with an average high of 30.6°F (-0.8°C) and a low of 18.9°F (-7.3°C), signifies the coldest month of the year.Humidity
In South Williamsport, Pennsylvania, the average relative humidity in January is 81%.Rainfall
In South Williamsport, during January, the rain falls for 8.4 days and regularly aggregates up to 0.98" (25mm) of precipitation. In South Williamsport, during the entire year, the rain falls for 145.2 days and collects up to 16.57" (421mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In South Williamsport, in January, during 11.8 snowfall days, 2.13" (54mm) of snow is typically accumulated. Throughout the year, in South Williamsport, there are 39.1 snowfall days, and 7.56" (192mm) of snow is accumulated.Daylight
In South Williamsport, the average length of the day in January is 9h and 37min.On the first day of January in South Williamsport, sunrise is at 7:33 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:22 pm EST.
Sunshine
The months with the least sunshine in South Williamsport are January and February, with an average of 3.7h of sunshine.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 2 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. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the coldest month in South Williamsport?
How cold is it in South Williamsport in January?
What is the average humidity in January in South Williamsport?
How much does it rain in South Williamsport in January?
How many days does it snow in January in South Williamsport?
How many hours of daylight does South Williamsport have in January?
When is the sunrise / sunset in January in South Williamsport?
What are the months with the least sunshine in South Williamsport?
How many hours of sunshine does South Williamsport have in January?
What is the month with the lowest UV index in South Williamsport?
What is the UV index reading in January in South Williamsport?
Average temperature in January
South Williamsport, PA
- Average high temperature in January: 30.6°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in January: 18.9°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in January
South Williamsport, PA
- Average pressure in January: 30.09"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
South Williamsport, PA
- Average wind speed in January: 7.5mph
The windiest months (with the highest average wind speed) are January, March and April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in January
South Williamsport, PA
- Average humidity in January: 81%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are April and July (77%).
Average rainfall in January
South Williamsport, PA
- Average rainfall in January: 0.98"
The wettest month (with the highest rainfall) is April (1.93").
The driest month (with the least rainfall) is November (0.94").
Average rainfall days in January
South Williamsport, PA
- Average rainfall days in January: 8.4 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is February (7.5 days).
Average snowfall in January
South Williamsport, PA
- Average snowfall in January: 2.13"
The month with the highest snowfall is February (2.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
South Williamsport, PA
- Average snowfall days in January: 11.8 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
South Williamsport, 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: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The months with the least sunshine are January and February (Average sunshine: 3h and 42min).
Average sunshine days in January
South Williamsport, PA
- Average sunshine days in January: 14.4 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in January
South Williamsport, PA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in January
South Williamsport, PA
- Average cloud cover in January: 60
The months with the most cloud cover are January and February (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in January
South Williamsport, PA
- Average visibility in January: 5mi
The month with the highest visibility is April (6mi).
The month with the lowest visibility is September (4mi).
South Williamsport, Pennsylvania, USA
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