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
With December's arrival, Hornell's weather changes as the average high-temperature falls from a frosty 43.9°F (6.6°C) in November to a cold 33.8°F (1°C). In December, Hornell encounters an average low-temperature of 24.1°F (-4.4°C) during the night.Humidity
In Hornell, the average relative humidity in December is 86%.Rainfall
In Hornell, in December, it is raining for 8.9 days, with typically 1.65" (42mm) of accumulated precipitation. In Hornell, during the entire year, the rain falls for 153.6 days and collects up to 22.48" (571mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Hornell. In Hornell, in December, during 13.7 snowfall days, 5.12" (130mm) of snow is typically accumulated. In Hornell, during the entire year, snow falls for 71.8 days and aggregates up to 25.47" (647mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:20 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:48 pm EST.
Sunshine
The months with the least sunshine are January, February and December, with an average of 2.8h of sunshine.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 1 during December translates into the following guidance:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Enhance your sun protection with tightly woven, yet airy clothing. 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 Hornell?
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?
How many hours of daylight does Hornell have in December?
When are sunrise and sunset in December?
What are the months with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index?
How high is the UV index in December in Hornell?
Average temperature in December
Hornell, NY
- Average high temperature in December: 33.8°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 (27.9°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is January (16°F).
Average pressure in December
Hornell, NY
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Hornell, NY
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Hornell, NY
- Average humidity in December: 86%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is May (78%).
Average rainfall in December
Hornell, NY
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is October (2.52").
The driest month (with the least rainfall) is January (1.26").
Average rainfall days in December
Hornell, NY
- Average rainfall days in December: 8.9 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in December
Hornell, NY
- Average snowfall in December: 5.12"
The month with the highest snowfall is February (6.54").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Hornell, NY
- Average snowfall days in December: 13.7 days
The month with the highest number of snowfall days is January (16.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hornell, 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 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The months with the least sunshine are January, February and December (Average sunshine: 2h and 48min).
Average sunshine days in December
Hornell, NY
- Average sunshine days in December: 10.5 days
The month with the most sunshine days is September (14.9 days).
The month with the least sunshine days is February (9 days).
Average UV index in December
Hornell, 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 and December (UV index 1).
Average cloud cover in December
Hornell, NY
- Average cloud cover in December: 72
The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in December
Hornell, NY
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Hornell, New York, USA
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