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 sea temperature 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 the onset of December, Oswego's average high-temperature adjusts, receding from November's chilly 45.9°F (7.7°C) to a cold 36.5°F (2.5°C). The December nights show a slight decrease to a mean low-temperature of 29.5°F (-1.4°C).Humidity
In Oswego, the average relative humidity in December is 80%.Rainfall
In December, the rain falls for 10.1 days. Throughout December, 2.95" (75mm) of precipitation is accumulated. In Oswego, during the entire year, the rain falls for 163 days and collects up to 37.83" (961mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Oswego, New York. In Oswego, New York, in December, snow falls for 9.3 days, with typically accumulated 3.27" (83mm) of snow. In Oswego, during the entire year, snow falls for 46.3 days and aggregates up to 14.8" (376mm) of snow.Ocean temperature
In Oswego, in December, the average water temperature is 42.4°F (5.8°C).Note: Swimming at temperatures less than 50°F (10°C) in 42.4°F (5.8°C) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. A quick swim at 55.4°F (13°C) without adequate warmth can be discomforting.
Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year in Oswego.On the first day of the month, sunrise is at 7:19 am and sunset at 4:31 pm. On the last day of December, sunrise is at 7:38 am and sunset at 4:39 pm EST.
Sunshine
The average sunshine in December in Oswego is 2.7h.UV index
The months with the lowest UV index in Oswego are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.Note: In December, the average maximum UV index of 1 translates into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Enhance your sun protection with tightly woven, yet airy clothing. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is it in Oswego in December?
What is the average humidity in December in Oswego?
How many days does it rain in December in Oswego?
How much does it snow in Oswego in December?
How cold is the water in December in Oswego?
What is the month with the shortest days in Oswego?
What is the average length of the day in December in Oswego?
When is the sunrise / sunset in December in Oswego?
How long on average sun shines in December in Oswego?
When is the lowest UV index in Oswego?
What is the UV index reading in December in Oswego?
Average temperature in December
Oswego, NY
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is August (74.1°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in December: 29.5°F
The months with the highest average low temperature are July and August (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in December
Oswego, NY
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Oswego, NY
- Average wind speed in December: 14.7mph
The windiest month (with the highest average wind speed) is January (15mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).
Average humidity in December
Oswego, NY
- Average humidity in December: 80%
The month with the highest relative humidity is June (83%).
The months with the lowest relative humidity are September and November (75%).
Average rainfall in December
Oswego, NY
- Average rainfall in December: 2.95"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is January (2.2").
Average rainfall days in December
Oswego, NY
- Average rainfall days in December: 10.1 days
The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is February (6 days).
Average snowfall in December
Oswego, NY
- Average snowfall in December: 3.27"
The month with the highest snowfall is February (3.94").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Oswego, NY
- Average snowfall days in December: 9.3 days
The month with the highest number of snowfall days is February (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Oswego, NY
- Average sea temperature in December: 42.3°F
The best month for swimming (with the highest average sea temperature) is August (73.2°F).
The coldest month (with the lowest average sea temperature) is March (35.4°F).
Average daylight in December /
Average sunshine in December
Oswego, NY
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 2h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in December
Oswego, NY
- Average sunshine days in December: 8.5 days
The month with the most sunshine days is September (13.7 days).
The month with the least sunshine days is December (8.5 days).
Average UV index in December
Oswego, 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
Oswego, NY
- Average cloud cover in December: 75
The month with the most cloud cover is January (Cloud cover 79).
The months with the least cloud cover are July and August (Cloud cover 29).
Average visibility in December
Oswego, NY
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Oswego, New York, USA
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