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 28.8°F (-1.8°C) and an average low of 18.9°F (-7.3°C).Humidity
The average relative humidity in January is 86%.Rainfall
January is the month with the least rainfall. Rain falls for 7.7 days and accumulates 1.54" (39mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Derby. In January, it is snowing for 15.6 days. Throughout January, 3.94" (100mm) of snow is accumulated. Throughout the year, there are 62.9 snowfall days, and 19.65" (499mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 28min.On the first day of the month, sunrise is at 7:46 am and sunset at 4:52 pm. On the last day of January, in Derby, sunrise is at 7:31 am and sunset at 5:27 pm EST.
Sunshine
January has the least sunshine of the year in Derby, with an average of 2.4h of sunshine.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Derby. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index, 1 during January, leads to the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Frequently asked questions
What are the coldest months in Derby?
How cold is it in Derby in January?
What is the average humidity in January in Derby?
What is the driest month in Derby?
How many days does it rain in January in Derby?
How many days does it snow in January in Derby?
How many hours of daylight does Derby have in January?
When are sunrise and sunset in January in Derby?
What is the month with the least sunshine in Derby?
How many hours of sunshine does Derby have in January?
What is the month with the lowest UV index in Derby?
What is the UV index reading in January in Derby?
Average temperature in January
Derby, NY
- Average high temperature in January: 28.8°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in January: 18.9°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in January
Derby, NY
- Average pressure in January: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Derby, NY
- Average wind speed in January: 11.8mph
The windiest month (with the highest average wind speed) is January (11.8mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in January
Derby, NY
- Average humidity in January: 86%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are August and September (78%).
Average rainfall in January
Derby, NY
- Average rainfall in January: 1.54"
The wettest month (with the highest rainfall) is July (2.52").
The driest month (with the least rainfall) is January (1.54").
Average rainfall days in January
Derby, NY
- Average rainfall days in January: 7.7 days
The months with the highest number of rainy days are July and October (18.1 days).
The month with the least rainy days is February (7 days).
Average snowfall in January
Derby, NY
- Average snowfall in January: 3.94"
The month with the highest snowfall is February (5.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Derby, NY
- Average snowfall days in January: 15.6 days
The month with the highest number of snowfall days is January (15.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Derby, NY
- Average daylight in January: 9h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 2h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in January
Derby, NY
- Average sunshine days in January: 8.3 days
The month with the most sunshine days is March (13 days).
The month with the least sunshine days is January (8.3 days).
Average UV index in January
Derby, NY
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Derby, NY
- Average cloud cover in January: 76
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in January
Derby, NY
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Derby, New York, USA
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