December weather forecastHarris, NY
December
Weather in December
December, the first month of the winter in Harris, is also an icy month, with temperature in the range of an average high of 35.6°F (2°C) and an average low of 23.9°F (-4.5°C).Temperature
Harris's average high-temperature decreases in December, falling from a chilly 45.3°F (7.4°C) in November to a wintry 35.6°F (2°C). Nighttime temperatures consistently average a freezing cold 23.9°F (-4.5°C) during December.Humidity
The months with the highest humidity are February and December, with an average relative humidity of 85%.Rainfall
In Harris, in December, it is raining for 9.8 days, with typically 2.32" (59mm) of accumulated precipitation. Throughout the year, there are 153.7 rainfall days, and 26.73" (679mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is December, when snow falls for 8.1 days and typically aggregates up to 5.04" (128mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:07 am and sunset at 4:29 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:38 pm EST.
Sunshine
In December, the average sunshine in Harris is 4.3h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 2 during December leads to these advisories:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Harris, NY
- Average high temperature in December: 35.6°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in December: 23.9°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in December
Harris, 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
Harris, NY
- Average wind speed in December: 7.1mph
The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Harris, NY
- Average humidity in December: 85%
The months with the highest relative humidity are February and December (85%).
The month with the lowest relative humidity is July (77%).
Average rainfall in December
Harris, NY
- Average rainfall in December: 2.32"
The wettest month (with the highest rainfall) is May (2.8").
The driest months (with the least rainfall) are January and February (1.65").
Average rainfall days in December
Harris, NY
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in December
Harris, NY
- Average snowfall in December: 5.04"
The month with the highest snowfall is December (5.04").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Harris, NY
- Average snowfall days in December: 8.1 days
The month with the highest number of snowfall days is February (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Harris, NY
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in December
Harris, NY
- Average sunshine days in December: 16.2 days
The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in December
Harris, NY
- Average UV index in December: 2
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, October, November and December (UV index 2).
Average cloud cover in December
Harris, NY
- Average cloud cover in December: 55
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in December
Harris, NY
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (5mi).
The months with the lowest visibility are May and September (4mi).
