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
As December arrives, Mandana's weather displays a decrease in high-temperatures, transitioning from November's chilly 44.6°F (7°C) to a wintry 34.3°F (1.3°C). Mandana observes an average low-temperature of 25.3°F (-3.7°C) during the slightly cooler nights of December.Humidity
In December, the average relative humidity is 86%.Rainfall
In Mandana, New York, during December, the rain falls for 8.9 days and regularly aggregates up to 1.1" (28mm) of precipitation. Throughout the year, there are 137.8 rainfall days, and 13.74" (349mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Mandana, in December, snow falls for 15.1 days, with typically accumulated 3.23" (82mm) of snow. Throughout the year, there are 76.2 snowfall days, and 16.93" (430mm) of snow is accumulated.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:17 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:41 pm EST.
Sunshine
The average sunshine in December in Mandana, New York, is 3h.UV index
February and December, with an average maximum UV index of 1, are months with the lowest UV index in Mandana. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In December, an average UV index of 1 transforms into the following instructions:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Caution! The reflection of snow can nearly 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 December in Mandana?
What is the average humidity in December in Mandana?
How much does it rain in Mandana in December?
How much does it snow in Mandana in December?
What is the month with the shortest days in Mandana?
What is the average length of the day in December in Mandana?
What time are sunrise and sunset in December in Mandana?
How many hours of sunshine does Mandana have in December?
When is the lowest UV index in Mandana?
What is the UV index reading in December in Mandana?
Average temperature in December
Mandana, NY
- Average high temperature in December: 34.3°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: 25.3°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in December
Mandana, 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
Mandana, NY
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity in December
Mandana, NY
- Average humidity in December: 86%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April and May (79%).
Average rainfall in December
Mandana, NY
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in December
Mandana, NY
- Average rainfall days in December: 8.9 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in December
Mandana, NY
- Average snowfall in December: 3.23"
The month with the highest snowfall is February (3.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Mandana, NY
- Average snowfall days in December: 15.1 days
The month with the highest number of snowfall days is January (18.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Mandana, 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: 3h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).
Average sunshine days in December
Mandana, NY
- Average sunshine days in December: 10.5 days
The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is February (7.9 days).
Average UV index in December
Mandana, 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 and December (UV index 1).
Average cloud cover in December
Mandana, NY
- Average cloud cover in December: 70
The month with the most cloud cover is February (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in December
Mandana, NY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, July and December (5mi).
Mandana, New York, USA
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