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
The coldest period is January, when temperatures fluctuate between an average high of 32.5°F (0.3°C) and a low of 20.1°F (-6.6°C).Humidity
The average relative humidity in January is 85%.Rainfall
In January, the rain falls for 9.5 days. Throughout January, 1.81" (46mm) of precipitation is accumulated. Throughout the year, in New Derry, there are 173.8 rainfall days, and 25.55" (649mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. January is the month with the most snowfall. Snow falls for 17.6 days and accumulates 4.96" (126mm) of snow.Daylight
In New Derry, the average length of the day in January is 9h and 41min.On the first day of the month, sunrise is at 7:40 am and sunset at 5:01 pm. On the last day of January, sunrise is at 7:27 am and sunset at 5:33 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 3h of sunshine.UV index
The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The daily maximum UV index of 2 in January interprets into the following advice:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. It's recommended to limit sun exposure when its radiation is at its peak during midday. Always opt for UVA and UVB-resistant sunglasses on radiant days. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold is it in January?
What is the average humidity in January?
How many days does it rain in January?
When does it snow the most?
How much does it snow in New Derry in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
What is the UV index reading in January?
Average temperature in January
New Derry, PA
- Average high temperature in January: 32.5°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 (32.5°F).
- Average low temperature in January: 20.1°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in January
New Derry, PA
- Average pressure in January: 30.11"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
New Derry, PA
- Average wind speed in January: 8.8mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in January
New Derry, PA
- Average humidity in January: 85%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, June, July and August (78%).
Average rainfall in January
New Derry, PA
- Average rainfall in January: 1.81"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is November (1.38").
Average rainfall days in January
New Derry, PA
- Average rainfall days in January: 9.5 days
The month with the highest number of rainy days is May (20.4 days).
The month with the least rainy days is January (9.5 days).
Average snowfall in January
New Derry, PA
- Average snowfall in January: 4.96"
The month with the highest snowfall is January (4.96").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
New Derry, PA
- Average snowfall days in January: 17.6 days
The month with the highest number of snowfall days is January (17.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
New Derry, 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: 3h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in January
New Derry, PA
- Average sunshine days in January: 7 days
The month with the most sunshine days is November (14.4 days).
The month with the least sunshine days is January (7 days).
Average UV index in January
New Derry, PA
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
New Derry, PA
- Average cloud cover in January: 70
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in January
New Derry, PA
- Average visibility in January: 4mi
The month with the highest visibility is April (6mi).
The month with the lowest visibility is January (4mi).
New Derry, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location