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, exhibiting average temperatures of 37°F (2.8°C) at the peak and 25.2°F (-3.8°C) at the base.Humidity
In January, the average relative humidity in Greenbrook is 75%.Rainfall
January is the month with the least rainfall in Greenbrook, Pennsylvania. Rain falls for 8 days and accumulates 1.89" (48mm) of precipitation.Snowfall
January through May, November and December are months with snowfall in Greenbrook. In January, it is snowing for 4.8 days. Throughout January, 1.57" (40mm) of snow is accumulated. Throughout the year, there are 15.9 snowfall days, and 8.5" (216mm) of snow is accumulated.Daylight
The average length of the day in January in Greenbrook is 9h and 42min.On the first day of the month, sunrise is at 7:21 am and sunset at 4:44 pm. On the last day of January, sunrise is at 7:09 am and sunset at 5:16 pm EST.
Sunshine
In Greenbrook, the average sunshine in January is 5.1h.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 minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In January, a regular UV index of 2 translates into these guidelines:
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. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Greenbrook?
How cold is it in Greenbrook in January?
What is the average humidity in January in Greenbrook?
What is the driest month in Greenbrook?
How much does it rain in Greenbrook in January?
How many days does it snow in January in Greenbrook?
What is the average length of the day in January in Greenbrook?
What time are sunrise and sunset in January in Greenbrook?
How long on average sun shines in January in Greenbrook?
What are the months with the lowest UV index in Greenbrook?
How high is the UV index in January in Greenbrook?
Average temperature in January
Greenbrook, PA
- Average high temperature in January: 37°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in January: 25.2°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in January
Greenbrook, PA
- Average pressure in January: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Greenbrook, PA
- Average wind speed in January: 8.3mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in January
Greenbrook, PA
- Average humidity in January: 75%
The months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in January
Greenbrook, PA
- Average rainfall in January: 1.89"
The wettest month (with the highest rainfall) is July (3.66").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in January
Greenbrook, PA
- Average rainfall days in January: 8 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is January (8 days).
Average snowfall in January
Greenbrook, PA
- Average snowfall in January: 1.57"
The month with the highest snowfall is March (2.99").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in January
Greenbrook, PA
- Average snowfall days in January: 4.8 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Greenbrook, 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: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in January
Greenbrook, PA
- Average sunshine days in January: 19.8 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in January
Greenbrook, PA
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Greenbrook, PA
- Average cloud cover in January: 44
The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in January
Greenbrook, PA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Greenbrook, Pennsylvania, USA
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