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 is the coldest month, with the temperature often reaching an average high of 30.6°F (-0.8°C) and an average low of 18.9°F (-7.3°C).Humidity
The months with the highest humidity are January and February, with an average relative humidity of 86%.Rainfall
In Twin Rocks, during January, the rain falls for 9.6 days and regularly aggregates up to 2.56" (65mm) of precipitation. Throughout the year, in Twin Rocks, there are 169.1 rainfall days, and 32.6" (828mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. January is the month with the most snowfall. Snow falls for 17.1 days and accumulates 8.27" (210mm) of snow.Daylight
In January, the average length of the day is 9h and 40min.On the first day of January, sunrise is at 7:38 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:31 pm EST.
Sunshine
With an average of 2.9h of sunshine, January has the least sunshine of the year.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 exposure to the Sun's UV rays for ordinary individuals.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. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold is January?
What is the most humid month?
What is the average humidity in January?
How many days does it rain in January?
When does it snow the most in Twin Rocks?
How many days does it snow in January?
How many hours of daylight does Twin Rocks have in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Twin Rocks have in January?
What is the UV index reading in January?
Average temperature in January
Twin Rocks, PA
- Average high temperature in January: 30.6°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in January: 18.9°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in January
Twin Rocks, 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
Twin Rocks, PA
- Average wind speed in January: 10.1mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in January
Twin Rocks, PA
- Average humidity in January: 86%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April and July (78%).
Average rainfall in January
Twin Rocks, PA
- Average rainfall in January: 2.56"
The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is November (1.85").
Average rainfall days in January
Twin Rocks, PA
- Average rainfall days in January: 9.6 days
The month with the highest number of rainy days is May (20.7 days).
The month with the least rainy days is February (9.3 days).
Average snowfall in January
Twin Rocks, PA
- Average snowfall in January: 8.27"
The month with the highest snowfall is January (8.27").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Twin Rocks, PA
- Average snowfall days in January: 17.1 days
The month with the highest number of snowfall days is January (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Twin Rocks, 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 18min).
- Average sunshine in January: 2h and 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in January
Twin Rocks, PA
- Average sunshine days in January: 7.5 days
The month with the most sunshine days is November (14.8 days).
The month with the least sunshine days is January (7.5 days).
Average UV index in January
Twin Rocks, 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
Twin Rocks, PA
- Average cloud cover in January: 72
The month with the most cloud cover is January (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in January
Twin Rocks, PA
- Average visibility in January: 4mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Twin Rocks, Pennsylvania, USA
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