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 start of December signals a decrease in the average high-temperature, transitioning from a chilly 44.8°F (7.1°C) in November to a cold 34.7°F (1.5°C). A modest decline from daytime high temperatures is noticed in December, marking the average low at a subzero cold 26.1°F (-3.3°C).Humidity
The average relative humidity in December in Porterville is 86%.Rainfall
In December, in Porterville, New York, the rain falls for 10.5 days. Throughout December, 2.48" (63mm) of precipitation is accumulated. Throughout the year, in Porterville, there are 174.6 rainfall days, and 29.29" (744mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Porterville, in December, during 17.9 snowfall days, 7.28" (185mm) of snow is typically accumulated. In Porterville, during the entire year, snow falls for 88.4 days and aggregates up to 38.39" (975mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year in Porterville, New York.On the first day of the month, sunrise is at 7:25 am and sunset at 4:41 pm. On the last day of December, in Porterville, sunrise is at 7:44 am and sunset at 4:50 pm EST.
Sunshine
In December, the average sunshine in Porterville is 2.7h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Porterville. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 1 in December transforms into this advice:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. When the Sun is at its strongest around midday, find shade and limit exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Porterville in December?
What is the average humidity in December in Porterville?
How many days does it rain in December in Porterville?
How many days does it snow in December in Porterville?
What is the month with the shortest days in Porterville?
How many hours of daylight does Porterville have in December?
What time are sunrise and sunset in December in Porterville?
How many hours of sunshine does Porterville have in December?
When is the lowest UV index in Porterville?
What is the UV index reading in December in Porterville?
Average temperature in December
Porterville, NY
- Average high temperature in December: 34.7°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 (28.6°F).
- Average low temperature in December: 26.1°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in December
Porterville, 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
Porterville, NY
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in December
Porterville, NY
- Average humidity in December: 86%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are May, July and September (78%).
Average rainfall in December
Porterville, NY
- Average rainfall in December: 2.48"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in December
Porterville, NY
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is February (8 days).
Average snowfall in December
Porterville, NY
- Average snowfall in December: 7.28"
The month with the highest snowfall is February (9.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Porterville, NY
- Average snowfall days in December: 17.9 days
The month with the highest number of snowfall days is January (19.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Porterville, 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: 2h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in December
Porterville, NY
- Average sunshine days in December: 7 days
The month with the most sunshine days is September (11.9 days).
The month with the least sunshine days is February (5.3 days).
Average UV index in December
Porterville, NY
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Porterville, NY
- Average cloud cover in December: 73
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Porterville, NY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (4mi).
Porterville, New York, USA
Weather forecast for your location
2. Allow the app to use your location