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
December's onset brings a reduction in the average high-temperature, from a cold 42.4°F (5.8°C) in November to a still wintry 32.9°F (0.5°C). In Morris, December is marked by an average low-temperature of 22.5°F (-5.3°C).Humidity
The months with the highest humidity are January, February and December, with an average relative humidity of 87%.Rainfall
In Morris, in December, during 10.3 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, in Morris, there are 161.1 rainfall days, and 31.18" (792mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 16.7 days. Throughout December, 8.35" (212mm) of snow is accumulated. In Morris, during the entire year, snow falls for 92.9 days and aggregates up to 48.23" (1225mm) of snow.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 7:11 am and sunset at 4:28 pm. On the last day of December, sunrise is at 7:30 am and sunset at 4:37 pm EST.
Sunshine
The average sunshine in December is 2.8h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In December, an average UV index of 1 transforms into the following instructions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. 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
How cold is it in December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December in Morris?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Morris, NY
- Average high temperature in December: 32.9°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 (27°F).
- Average low temperature in December: 22.5°F
The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in December
Morris, NY
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Morris, NY
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in December
Morris, NY
- Average humidity in December: 87%
The months with the highest relative humidity are January, February and December (87%).
The months with the lowest relative humidity are April and May (79%).
Average rainfall in December
Morris, NY
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in December
Morris, NY
- Average rainfall days in December: 10.3 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (6.6 days).
Average snowfall in December
Morris, NY
- Average snowfall in December: 8.35"
The month with the highest snowfall is February (9.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Morris, NY
- Average snowfall days in December: 16.7 days
The month with the highest number of snowfall days is January (20.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Morris, 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 5min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 2h and 36min).
Average sunshine days in December
Morris, NY
- Average sunshine days in December: 7.9 days
The month with the most sunshine days is September (14.6 days).
The month with the least sunshine days is February (5.5 days).
Average UV index in December
Morris, NY
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in December
Morris, NY
- Average cloud cover in December: 73
The month with the most cloud cover is February (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 41).
Average visibility in December
Morris, NY
- Average visibility in December: 5mi
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).
Morris, New York, USA
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