January weather forecastGreat Valley, NY
January
Weather in January
January, the same as December, in Great Valley, New York, is another subzero cold winter month, with an average temperature ranging between max 28°F (-2.2°C) and min 16.2°F (-8.8°C).Temperature
Great Valley, New York, notes the coldest temperatures in January, with a high average of 28°F (-2.2°C) and a low of 16.2°F (-8.8°C).Humidity
January and February, with an average relative humidity of 89%, are the most humid months in Great Valley.Rainfall
In Great Valley, during January, the rain falls for 6.7 days and regularly aggregates up to 1.97" (50mm) of precipitation. Throughout the year, in Great Valley, there are 159.5 rainfall days, and 28.03" (712mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Great Valley, in January, during 18.3 snowfall days, 6.42" (163mm) of snow is typically accumulated. Throughout the year, there are 75.5 snowfall days, and 34.17" (868mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 31min.On the first day of the month, sunrise is at 7:43 am and sunset at 4:52 pm. On the last day of January, in Great Valley, New York, sunrise is at 7:28 am and sunset at 5:26 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 2.3h of sunshine.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In January, the maximum UV index of 1 suggests these recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Great Valley, NY
- Average high temperature in January: 28°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in January: 16.2°F
The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in January
Great Valley, NY
- Average pressure in January: 30.07"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
Great Valley, NY
- Average wind speed in January: 10mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in January
Great Valley, NY
- Average humidity in January: 89%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (79%).
Average rainfall in January
Great Valley, NY
- Average rainfall in January: 1.97"
The wettest month (with the highest rainfall) is April (3.27").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in January
Great Valley, NY
- Average rainfall days in January: 6.7 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in January
Great Valley, NY
- Average snowfall in January: 6.42"
The month with the highest snowfall is February (8.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Great Valley, NY
- Average snowfall days in January: 18.3 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Great Valley, NY
- Average daylight in January: 9h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 2h and 18min
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 18min).
Average sunshine days in January
Great Valley, NY
- Average sunshine days in January: 8.3 days
The month with the most sunshine days is September (13.3 days).
The month with the least sunshine days is January (8.3 days).
Average UV index in January
Great Valley, NY
- Average UV index in January: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in January
Great Valley, NY
- Average cloud cover in January: 79
The month with the most cloud cover is January (Cloud cover 79).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in January
Great Valley, NY
- Average visibility in January: 4mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).
