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 month of January sees the lowest average temperatures, reaching 28.8°F (-1.8°C) at the peak and 18.9°F (-7.3°C) at the low.Humidity
In Derby, the average relative humidity in January is 86%.Rainfall
The month with the least rainfall is January, when the rain falls for 7.7 days and typically collects 1.54" (39mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Derby. In Derby, New York, in January, snow falls for 15.6 days, with typically accumulated 3.94" (100mm) of snow. In Derby, during the entire year, snow falls for 62.9 days and aggregates up to 19.65" (499mm) of snow.Daylight
In Derby, 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, sunrise is at 7:31 am and sunset at 5:27 pm EST.
Sunshine
January has the least sunshine of the year, 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. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 1 in January transforms into this advice:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of 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 January?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January?
How many days does it snow in January?
How many hours of daylight does Derby have in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
What are the months with the lowest UV index?
What is the UV index intensity in January?
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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