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
Stepping into December, Round Lake observes a temperature decline, with the average high falling from November's frosty 45.3°F (7.4°C) to a cold 33.8°F (1°C). Throughout December, the average low-temperature in Round Lake records at a freezing cold 24.4°F (-4.2°C).Humidity
The average relative humidity in December is 80%.Rainfall
In Round Lake, in December, it is raining for 8.8 days, with typically 2.64" (67mm) of accumulated precipitation. Throughout the year, in Round Lake, there are 140.7 rainfall days, and 31.02" (788mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Round Lake, in December, during 8.2 snowfall days, 5.71" (145mm) of snow is typically accumulated. In Round Lake, during the entire year, snow falls for 43.3 days and aggregates up to 27.44" (697mm) 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 the month, sunrise is at 7:07 am and sunset at 4:21 pm. On the last day of December, in Round Lake, sunrise is at 7:26 am and sunset at 4:30 pm EST.
Sunshine
In Round Lake, the average sunshine in December is 4.1h.UV index
The months with the lowest UV index in Round Lake are February 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 the ordinary person.Note: In December, the maximum UV index of 1 translates into these guidelines:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Round Lake in December?
What is the average humidity in December in Round Lake?
How much does it rain in Round Lake in December?
How many days does it snow in December in Round Lake?
What is the month with the shortest days in Round Lake?
What is the average length of the day in December in Round Lake?
What time are sunrise and sunset in December in Round Lake?
How many hours of sunshine does Round Lake have in December?
What are the months with the lowest UV index in Round Lake?
What is the UV index reading in December in Round Lake?
Average temperature in December
Round Lake, NY
- Average high temperature in December: 33.8°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in December: 24.4°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in December
Round Lake, 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
Round Lake, NY
- Average wind speed in December: 7.2mph
The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Round Lake, NY
- Average humidity in December: 80%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Round Lake, NY
- Average rainfall in December: 2.64"
The wettest month (with the highest rainfall) is May (3.35").
The driest month (with the least rainfall) is March (1.97").
Average rainfall days in December
Round Lake, NY
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in December
Round Lake, NY
- Average snowfall in December: 5.71"
The month with the highest snowfall is January (7.32").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Round Lake, NY
- Average snowfall days in December: 8.2 days
The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Round Lake, 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: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in December
Round Lake, NY
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in December
Round Lake, 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
Round Lake, NY
- Average cloud cover in December: 57
The month with the most cloud cover is February (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in December
Round Lake, NY
- Average visibility in December: 6mi
The months with the highest visibility are April, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, March, May, August and September (5mi).
Round Lake, New York, USA
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