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 arrival of December corresponds with a shift in temperature, down from a chilly 43.7°F (6.5°C) in November to a cold 32.7°F (0.4°C). Throughout the nights in December, an average low-temperature of 22.1°F (-5.5°C) is noted in Petersburg.Humidity
The average relative humidity in December in Petersburg is 85%.Rainfall
In Petersburg, New York, in December, it is raining for 11.1 days, with typically 3.19" (81mm) of accumulated precipitation. In Petersburg, during the entire year, the rain falls for 167.1 days and collects up to 35.98" (914mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Petersburg. In December, it is snowing for 11.2 days. Throughout December, 6.93" (176mm) of snow is accumulated. In Petersburg, during the entire year, snow falls for 66.1 days and aggregates up to 39.09" (993mm) 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 7:04 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:29 pm EST.
Sunshine
In December, the average sunshine in Petersburg is 3.8h.UV index
February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 1 during December translates into the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Frequently asked questions
How cold is it in Petersburg in December?
What is the average humidity in December in Petersburg?
How many days does it rain in December in Petersburg?
How many days does it snow in December in Petersburg?
What is the month with the shortest days in Petersburg?
How many hours of daylight does Petersburg have in December?
When is the sunrise / sunset in December in Petersburg?
How many hours of sunshine does Petersburg have in December?
When is the lowest UV index in Petersburg?
What is the UV index reading in December in Petersburg?
Average temperature in December
Petersburg, NY
- Average high temperature in December: 32.7°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in December: 22.1°F
The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).
Average pressure in December
Petersburg, 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 (29.92"Hg).
Average wind speed in December
Petersburg, NY
- Average wind speed in December: 8.4mph
The windiest months (with the highest average wind speed) are January and February (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Petersburg, NY
- Average humidity in December: 85%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Petersburg, NY
- Average rainfall in December: 3.19"
The wettest month (with the highest rainfall) is October (3.62").
The driest month (with the least rainfall) is March (2.6").
Average rainfall days in December
Petersburg, NY
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in December
Petersburg, NY
- Average snowfall in December: 6.93"
The month with the highest snowfall is February (10").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Petersburg, NY
- Average snowfall days in December: 11.2 days
The month with the highest number of snowfall days is February (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Petersburg, 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 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days in December
Petersburg, NY
- Average sunshine days in December: 11.7 days
The month with the most sunshine days is September (14.3 days).
The month with the least sunshine days is February (9 days).
Average UV index in December
Petersburg, NY
- Average UV index in December: 1
The months with the highest UV index are 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
Petersburg, NY
- Average cloud cover in December: 60
The month with the most cloud cover is February (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in December
Petersburg, 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).
Petersburg, New York, USA
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