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 month is January, with an average high-temperature of 30.7°F (-0.7°C) and an average low-temperature of 18.7°F (-7.4°C).Humidity
In Castle Rocks, the average relative humidity in January is 82%.Rainfall
In Castle Rocks, during January, the rain falls for 10.8 days and regularly aggregates up to 2.4" (61mm) of precipitation. In Castle Rocks, during the entire year, the rain falls for 181 days and collects up to 33.07" (840mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In January, in Castle Rocks, it is snowing for 15.4 days. Throughout January, 6.85" (174mm) of snow is accumulated. Throughout the year, there are 55.8 snowfall days, and 25.63" (651mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 37min.On the first day of January, sunrise is at 7:34 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:23 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 3.6h of sunshine.UV index
In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 2 in January interprets into the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. To avoid the Sun's strongest rays, limit exposure around the mid-day period. During bright days, sunglasses that offer UVA and UVB defense are recommended. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is it in Castle Rocks in January?
What is the average humidity in January?
How many days does it rain in January?
How much does it snow in Castle Rocks in January?
How many hours of daylight does Castle 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 Castle Rocks have in January?
How high is the UV index in January?
Average temperature in January
Castle Rocks, PA
- Average high temperature in January: 30.7°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in January: 18.7°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in January
Castle Rocks, PA
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Castle Rocks, PA
- Average wind speed in January: 7.5mph
The windiest months (with the highest average wind speed) are January and April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in January
Castle Rocks, PA
- Average humidity in January: 82%
The months with the highest relative humidity are February and December (84%).
The months with the lowest relative humidity are April and July (77%).
Average rainfall in January
Castle Rocks, PA
- Average rainfall in January: 2.4"
The wettest month (with the highest rainfall) is April (3.58").
The driest month (with the least rainfall) is November (2.17").
Average rainfall days in January
Castle Rocks, PA
- Average rainfall days in January: 10.8 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is January (10.8 days).
Average snowfall in January
Castle Rocks, PA
- Average snowfall in January: 6.85"
The month with the highest snowfall is February (7.05").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Castle Rocks, PA
- Average snowfall days in January: 15.4 days
The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Castle Rocks, PA
- Average daylight in January: 9h and 4min
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: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in January
Castle Rocks, PA
- Average sunshine days in January: 10.5 days
The month with the most sunshine days is September (15 days).
The month with the least sunshine days is February (8.5 days).
Average UV index in January
Castle Rocks, 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
Castle Rocks, PA
- Average cloud cover in January: 61
The months with the most cloud cover are January, February and December (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in January
Castle Rocks, PA
- Average visibility in January: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Castle Rocks, Pennsylvania, USA
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