January weather forecastNew Castle, PA
January
Weather in January
Amidst the harsh winters of New Castle, Pennsylvania, January stands out with the highest relative humidity of 86%. Snowfall is a common phenomenon, covering the city in a mantle of white that contrasts beautifully with the frequent, overcast skies. The predominance of cloudy weather combined with the low sun exposure can somewhat limit visibility during this time. It's a season where outdoor activities are replaced by cozy fireplaces indoors. Woolens and snow boots are crucial to face the bristling wind and cold temperatures.Temperature
With average high temperatures of 31.5°F (-0.3°C) and lows of 18.9°F (-7.3°C), January is the coldest month.Humidity
In New Castle, the average relative humidity in January is 86%.Rainfall
In New Castle, in January, it is raining for 8.8 days, with typically 2.64" (67mm) of accumulated precipitation. Throughout the year, there are 177.6 rainfall days, and 34.92" (887mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. January is the month with the most snowfall. Snow falls for 18.6 days and accumulates 6.93" (176mm) of snow.Daylight
In New Castle, the average length of the day in January is 9h and 38min.On the first day of the month, sunrise is at 7:46 am and sunset at 5:03 pm. On the last day of January, sunrise is at 7:33 am and sunset at 5:36 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 2.5h of sunshine.UV index
The average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: A maximum high daily UV index of 2 during January translates into the following directions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
New Castle, PA
- Average high temperature in January: 31.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in January: 18.9°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in January
New Castle, PA
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
New Castle, PA
- Average wind speed in January: 8.3mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).
Average humidity in January
New Castle, PA
- Average humidity in January: 86%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April, May, June, July and August (78%).
Average rainfall in January
New Castle, PA
- Average rainfall in January: 2.64"
The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is November (2.24").
Average rainfall days in January
New Castle, PA
- Average rainfall days in January: 8.8 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in January
New Castle, PA
- Average snowfall in January: 6.93"
The month with the highest snowfall is January (6.93").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
New Castle, PA
- Average snowfall days in January: 18.6 days
The month with the highest number of snowfall days is January (18.6 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 Castle, 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: 2h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in January
New Castle, PA
- Average sunshine days in January: 7.7 days
The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is February (7 days).
Average UV index in January
New Castle, PA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
New Castle, PA
- Average cloud cover in January: 73
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in January
New Castle, PA
- Average visibility in January: 4mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February and December (4mi).
