Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
In December, the average high-temperature decreases from a frosty 45.5°F (7.5°C) in November to a wintry 35.6°F (2°C). A modest decline from daytime high temperatures in Amherst is noticed in December, marking the average low at a subzero cold 27.7°F (-2.4°C).Humidity
In December, the average relative humidity in Amherst is 83%.Rainfall
In Amherst, in December, during 10.5 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, there are 169.2 rainfall days, and 28.15" (715mm) of precipitation is accumulated.Snowfall
Months with snowfall in Amherst are January through May, October through December. In Amherst, in December, snow falls for 15.5 days, with typically accumulated 5.24" (133mm) of snow. Throughout the year, there are 77.2 snowfall days, and 30.94" (786mm) of snow is accumulated.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:27 am and sunset at 4:41 pm. On the last day of December, sunrise is at 7:46 am and sunset at 4:50 pm EST.
Sunshine
The average sunshine in December is 2.7h.UV index
The months with the lowest UV index in Amherst, New York, are January, February and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Amherst?
What is the average humidity in December in Amherst?
How many days does it rain in December in Amherst?
How many days does it snow in December in Amherst?
What is the month with the shortest days in Amherst?
What is the average length of the day in December in Amherst?
When are sunrise and sunset in December in Amherst?
How long on average sun shines in December in Amherst?
When is the lowest UV index in Amherst?
What is the UV index intensity in December in Amherst?
Average temperature in December
Amherst, NY
- Average high temperature in December: 35.6°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in December
Amherst, NY
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Amherst, NY
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is January (11mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in December
Amherst, NY
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are July, August and September (74%).
Average rainfall in December
Amherst, NY
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in December
Amherst, NY
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (7.6 days).
Average snowfall in December
Amherst, NY
- Average snowfall in December: 5.24"
The month with the highest snowfall is February (7.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Amherst, NY
- Average snowfall days in December: 15.5 days
The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Amherst, NY
- Average daylight in December: 9h and 1min
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 December: 2h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in December
Amherst, NY
- Average sunshine days in December: 8.2 days
The month with the most sunshine days is September (12.5 days).
The month with the least sunshine days is January (6.3 days).
Average UV index in December
Amherst, NY
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Amherst, NY
- Average cloud cover in December: 72
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Amherst, NY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Amherst, New York, USA
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