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
With its high average temperature of 35.4°F (1.9°C) and a low of 22.6°F (-5.2°C), January is regarded as the coldest month.Humidity
In South Mountain, Pennsylvania, the average relative humidity in January is 76%.Rainfall
In South Mountain, during January, the rain falls for 5.4 days and regularly aggregates up to 0.71" (18mm) of precipitation. Throughout the year, in South Mountain, there are 125.3 rainfall days, and 10.59" (269mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. The month with the most snowfall in South Mountain is January, when snow falls for 6.7 days and typically aggregates up to 1.06" (27mm) of snow.Daylight
In South Mountain, Pennsylvania, the average length of the day in January is 9h and 44min.On the first day of the month, sunrise is at 7:31 am and sunset at 4:55 pm. On the last day of January, sunrise is at 7:19 am and sunset at 5:27 pm EST.
Sunshine
In South Mountain, the average sunshine in January is 4.6h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 2 in January translates into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Frequently asked questions
What is the coldest time of year in South Mountain?
How cold is January in South Mountain?
What is the average humidity in January in South Mountain?
How much does it rain in South Mountain in January?
What is the snowiest month in South Mountain?
How much does it snow in South Mountain in January?
How many hours of daylight does South Mountain have in January?
What time are sunrise and sunset in January in South Mountain?
How many hours of sunshine does South Mountain have in January?
What are the months with the lowest UV index in South Mountain?
How high is the UV index in January in South Mountain?
Average temperature in January
South Mountain, PA
- Average high temperature in January: 35.4°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in January: 22.6°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in January
South Mountain, PA
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in January
South Mountain, PA
- Average wind speed in January: 8mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in January
South Mountain, PA
- Average humidity in January: 76%
The months with the highest relative humidity are February, May and October (80%).
The month with the lowest relative humidity is July (75%).
Average rainfall in January
South Mountain, PA
- Average rainfall in January: 0.71"
The wettest month (with the highest rainfall) is May (1.26").
The driest month (with the least rainfall) is September (0.55").
Average rainfall days in January
South Mountain, PA
- Average rainfall days in January: 5.4 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in January
South Mountain, PA
- Average snowfall in January: 1.06"
The month with the highest snowfall is January (1.06").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
South Mountain, PA
- Average snowfall days in January: 6.7 days
The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
South Mountain, 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 24min).
- Average sunshine in January: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in January
South Mountain, PA
- Average sunshine days in January: 20.6 days
The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is May (12.9 days).
Average UV index in January
South Mountain, PA
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
South Mountain, PA
- Average cloud cover in January: 50
The months with the most cloud cover are January and February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in January
South Mountain, PA
- Average visibility in January: 5mi
The months with the highest visibility are March, April, June, July, November and December (6mi).
The months with the lowest visibility are January, February, May, August, September and October (5mi).
South Mountain, Pennsylvania, USA
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