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 tends to be the coldest month, with temperatures averaging a daily high of 1.9°C (35.4°F) and a low of -4.9°C (23.2°F).Humidity
In Lancaster, the average relative humidity in January is 77%.Rainfall
In January, the rain falls for 8.6 days. Throughout January, 50mm (1.97") of precipitation is accumulated. In Lancaster, during the entire year, the rain falls for 153.4 days and collects up to 718mm (28.27") of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Lancaster, in January, during 6.8 snowfall days, 80mm (3.15") of snow is typically accumulated. In Lancaster, Pennsylvania, during the entire year, snow falls for 20.8 days and aggregates up to 291mm (11.46") of snow.Daylight
In January, the average length of the day is 9h and 43min.On the first day of the month, sunrise is at 7:27 am and sunset at 4:50 pm. On the last day of January, sunrise is at 7:14 am and sunset at 5:22 pm EST.
Sunshine
The average sunshine in January is 4.7h.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 value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: An average UV index of 2 in January transforms into this advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is January?
What is the average humidity in January?
How many days does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
How many hours of sunshine does Lancaster have in January?
When is the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Lancaster, PA
- Average high temperature in January: 1.9°C
The warmest month (with the highest average high temperature) is July (28.3°C).
The month with the lowest average high temperature is January (1.9°C).
- Average low temperature in January: -4.9°C
The month with the highest average low temperature is July (18.2°C).
The coldest month (with the lowest average low temperature) is January (-4.9°C).
Average pressure in January
Lancaster, PA
- Average pressure in January: 1019.2mbar
The month with the highest atmospheric pressure is November (1020.4mbar).
The month with the lowest atmospheric pressure is June (1014mbar).
Average wind speed in January
Lancaster, PA
- Average wind speed in January: 14.3km/h
The windiest month (with the highest average wind speed) is March (14.5km/h).
The calmest month (with the lowest average wind speed) is August (8.2km/h).
Average humidity in January
Lancaster, PA
- Average humidity in January: 77%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in January
Lancaster, PA
- Average rainfall in January: 50mm
The wettest month (with the highest rainfall) is August (85mm).
The driest months (with the least rainfall) are February and September (48mm).
Average rainfall days in January
Lancaster, PA
- Average rainfall days in January: 8.6 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (8 days).
Average snowfall in January
Lancaster, PA
- Average snowfall in January: 80mm
The month with the highest snowfall is March (93mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in January
Lancaster, PA
- Average snowfall days in January: 6.8 days
The month with the highest number of snowfall days is January (6.8 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
Lancaster, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in January
Lancaster, PA
- Average sunshine days in January: 17.6 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in January
Lancaster, PA
- Average UV index in January: 2
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Lancaster, PA
- Average cloud cover in January: 48
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in January
Lancaster, PA
- Average visibility in January: 9km
The months with the highest visibility are January, February, March, April, June, July, October, November and December (9km).
The months with the lowest visibility are May, August and September (8km).
Lancaster, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location