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
The beginning of December involves a decrease in the average high-temperature, transitioning from a frosty 43.2°F (6.2°C) in November to a wintry 32.9°F (0.5°C). During December nights, Guilford witnesses a consistent average temperature of 23.2°F (-4.9°C).Humidity
The average relative humidity in December is 87%.Rainfall
In Guilford, during December, the rain falls for 9.9 days and regularly aggregates up to 1.38" (35mm) of precipitation. Throughout the year, there are 142.2 rainfall days, and 18.58" (472mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Guilford, during December, snow falls for 15.5 days and regularly aggregates up to 4.25" (108mm) of snow. Throughout the year, there are 82.5 snowfall days, and 23.31" (592mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:12 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 4:39 pm EST.
Sunshine
The average sunshine in December is 2.7h.UV index
The months with the lowest UV index are February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: An average UV index of 1 in December transforms into this advice:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days in Guilford?
What is the average length of the day in December?
When are sunrise and sunset in December?
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
Guilford, NY
- Average high temperature in December: 32.9°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in December: 23.2°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).
Average pressure in December
Guilford, 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
Guilford, NY
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Guilford, NY
- Average humidity in December: 87%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is July (79%).
Average rainfall in December
Guilford, NY
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is August (2.05").
The driest month (with the least rainfall) is September (1.1").
Average rainfall days in December
Guilford, NY
- Average rainfall days in December: 9.9 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
Guilford, NY
- Average snowfall in December: 4.25"
The month with the highest snowfall is January (4.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Guilford, NY
- Average snowfall days in December: 15.5 days
The month with the highest number of snowfall days is January (18.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Guilford, NY
- Average daylight in December: 9h and 1min
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 6min).
- Average sunshine in December: 2h and 4min
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 30min).
Average sunshine days in December
Guilford, NY
- Average sunshine days in December: 8.7 days
The month with the most sunshine days is September (16.3 days).
The month with the least sunshine days is February (7.1 days).
Average UV index in December
Guilford, 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 February, November and December (UV index 1).
Average cloud cover in December
Guilford, NY
- Average cloud cover in December: 73
The month with the most cloud cover is February (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in December
Guilford, NY
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Guilford, New York, USA
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