January weather forecastSouth Sterling, PA
January
Weather in January
January, the same as December, in South Sterling, Pennsylvania, is another subzero cold winter month, with an average temperature fluctuating between 29.8°F (-1.2°C) and 18°F (-7.8°C).Temperature
South Sterling's January weather, marked by an average high temperature of 29.8°F (-1.2°C) and an average low temperature of 18°F (-7.8°C), is the coldest in the year.Humidity
In January, the average relative humidity is 82%.Rainfall
In South Sterling, during January, the rain falls for 7.1 days and regularly aggregates up to 2.32" (59mm) of precipitation. Throughout the year, there are 154.8 rainfall days, and 32.24" (819mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In January, it is snowing for 13.3 days. Throughout January, 7.95" (202mm) of snow is accumulated. In South Sterling, during the entire year, snow falls for 62.1 days and aggregates up to 38.86" (987mm) of snow.Daylight
The average length of the day in January is 9h and 36min.On the first day of January, sunrise is at 7:26 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:15 pm EST.
Sunshine
In January, the average sunshine is 3.9h.UV index
The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: The daily maximum UV index of 2 in January interprets into the following advice:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Around midday, solar radiation is most harmful; hence, exposure should be limited. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
South Sterling, PA
- Average high temperature in January: 29.8°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in January: 18°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in January
South Sterling, PA
- Average pressure in January: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
South Sterling, PA
- Average wind speed in January: 8.6mph
The windiest months (with the highest average wind speed) are January and February (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in January
South Sterling, PA
- Average humidity in January: 82%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is July (77%).
Average rainfall in January
South Sterling, PA
- Average rainfall in January: 2.32"
The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in January
South Sterling, PA
- Average rainfall days in January: 7.1 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in January
South Sterling, PA
- Average snowfall in January: 7.95"
The month with the highest snowfall is February (8.03").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
South Sterling, PA
- Average snowfall days in January: 13.3 days
The month with the highest number of snowfall days is January (13.3 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 Sterling, PA
- Average daylight in January: 9h and 36min
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 54min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in January
South Sterling, PA
- Average sunshine days in January: 14.8 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (10.9 days).
Average UV index in January
South Sterling, PA
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
South Sterling, PA
- Average cloud cover in January: 59
The months with the most cloud cover are February and December (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in January
South Sterling, PA
- Average visibility in January: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
