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 onset of December introduces a moderate change in Hillsdale's weather, with average high-temperatures falling from November's frosty 46°F (7.8°C) to an icy 35.4°F (1.9°C). During December, Hillsdale records a consistent average nighttime temperature of 24.4°F (-4.2°C).Humidity
The average relative humidity in December is 82%.Rainfall
In December, the rain falls for 8.5 days. Throughout December, 1.54" (39mm) of precipitation is accumulated. Throughout the year, in Hillsdale, there are 139.3 rainfall days, and 21.06" (535mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Hillsdale, New York, in December, snow falls for 5.9 days, with typically accumulated 2.95" (75mm) of snow. In Hillsdale, during the entire year, snow falls for 37.3 days and aggregates up to 15.79" (401mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Hillsdale.On the first day of December, sunrise is at 7:03 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:32 pm EST.
Sunshine
In December, the average sunshine is 4.5h.UV index
The months with the lowest UV index in Hillsdale are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Frequently asked questions
How cold is December in Hillsdale?
What is the average humidity in December in Hillsdale?
How much does it rain in Hillsdale in December?
How many days does it snow in December in Hillsdale?
What is the month with the shortest days in Hillsdale?
What is the average length of the day in December in Hillsdale?
When are sunrise and sunset in December in Hillsdale?
How many hours of sunshine does Hillsdale have in December?
What is the month with the lowest UV index in Hillsdale?
What is the UV index intensity in December in Hillsdale?
Average temperature in December
Hillsdale, NY
- Average high temperature in December: 35.4°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 (29.7°F).
- Average low temperature in December: 24.4°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in December
Hillsdale, 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 (29.93"Hg).
Average wind speed in December
Hillsdale, NY
- Average wind speed in December: 7.4mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
Hillsdale, NY
- Average humidity in December: 82%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Hillsdale, NY
- Average rainfall in December: 1.54"
The wettest month (with the highest rainfall) is July (2.64").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in December
Hillsdale, NY
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in December
Hillsdale, NY
- Average snowfall in December: 2.95"
The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Hillsdale, NY
- Average snowfall days in December: 5.9 days
The month with the highest number of snowfall days is February (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hillsdale, 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 12min).
- Average sunshine in December: 4h and 3min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in December
Hillsdale, NY
- Average sunshine days in December: 18.9 days
The month with the most sunshine days is January (19.7 days).
The month with the least sunshine days is June (12.1 days).
Average UV index in December
Hillsdale, 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
Hillsdale, NY
- Average cloud cover in December: 52
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in December
Hillsdale, NY
- Average visibility in December: 6mi
The months with the highest visibility are January, April, November and December (6mi).
The months with the lowest visibility are February, March, May, June, July, August, September and October (5mi).
Hillsdale, New York, USA
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