January weather forecast
Derby, NY

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Weather in January

January, like December, is a freezing cold winter month in Derby, New York, with an average temperature varying between 18.9°F and 28.8°F.

Temperature

With average temperatures fluctuating between a high of 28.8°F and a low of 18.9°F, January stands out as the coldest month.

Humidity

The average relative humidity in January in Derby is 86%.

Rainfall

January is the month with the least rainfall in Derby. Rain falls for 7.7 days and accumulates 1.54" 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" of snow is accumulated. Throughout the year, in Derby, there are 62.9 snowfall days, and 19.65" of snow is accumulated.

Daylight

The average length of the day in January is 9h and 28min.
On the first day of January, sunrise is at 7:46 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:27 pm EST.

Sunshine

With an average of 2.4h of sunshine, January has the least sunshine of the year.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The UV index of 1 during January leads to these advisories:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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FAQ

What are the coldest months in Derby?

In Derby, January records the average lowest temperatures, peaking at 28.8°F and reaching a low of 18.9°F.

How cold is it in Derby in January?

An average high-temperature, in January, in Derby, is 28.8°F and the average low-temperature is 18.9°F.

What is the average humidity in January in Derby?

In Derby, the average relative humidity in January is 86%.

What is the driest month in Derby?

January is the month with the least rainfall in Derby, New York. Rain falls for 7.7 days and accumulates 1.54" of precipitation.

How many days does it rain in January in Derby?

In Derby, New York, in January, it is raining for 7.7 days, with typically 1.54" of accumulated precipitation.

How many days does it snow in January in Derby?

In Derby, during January, snow falls for 15.6 days and regularly aggregates up to 3.94" of snow.

What is the average length of the day in January in Derby?

The average day length in January in Derby is 9h and 28min.

When are sunrise and sunset in January in Derby?

On the first day of January in Derby, sunrise is at 7:46 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:27 pm EST.

What is the month with the least sunshine in Derby?

January has the least sunshine of the year, with an average of 2.4h of sunshine.

How long on average sun shines in January in Derby?

In Derby, the average sunshine duration in January is 2.4h.

What is the month with the lowest UV index in Derby?

The months with the lowest UV index in Derby are January and December, with an average maximum UV index of 1.

How high is the UV index in January in Derby?

In January, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Derby, NY

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).

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Average pressure in January
Derby, NY

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).

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Average wind speed in January
Derby, NY

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).

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Average humidity in January
Derby, NY

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%).

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Average rainfall in January
Derby, NY

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").

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Average rainfall days in January
Derby, NY

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).

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Average snowfall in January
Derby, NY

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").

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Average snowfall days in January
Derby, NY

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).

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Average daylight in January /
Average sunshine in January
Derby, NY

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).

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Average sunshine days in January
Derby, NY

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).

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Average UV index in January
Derby, NY

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).

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Average cloud cover in January
Derby, NY

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).

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Average visibility in January
Derby, NY

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).

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Derby, New York, USA

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