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 beginning of December involves a decrease in the average high-temperature, transitioning from a frosty 45.5°F (7.5°C) in November to a cold 36.5°F (2.5°C). Forestville notes an average temperature descent to a freezing cold 29.3°F (-1.5°C) in December, a small shift from its daytime peak.Humidity
The average relative humidity in December is 82%.Rainfall
In Forestville, in December, during 10.5 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. In Forestville, during the entire year, the rain falls for 171.9 days and collects up to 33.43" (849mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Forestville, New York, during December, snow falls for 11.5 days and regularly aggregates up to 3.23" (82mm) of snow. Throughout the year, there are 61.7 snowfall days, and 20.67" (525mm) of snow is accumulated.Daylight
December has the shortest days of the year in Forestville, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:27 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:46 am and sunset at 4:53 pm EST.
Sunshine
In Forestville, the average sunshine in December is 2.7h.UV index
January 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 hazard from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 1 in December interprets into the following advice:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Forestville, NY
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (74.8°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in December
Forestville, NY
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Forestville, NY
- Average wind speed in December: 13.9mph
The windiest month (with the highest average wind speed) is January (14.4mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).
Average humidity in December
Forestville, NY
- Average humidity in December: 82%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are September, October and November (77%).
Average rainfall in December
Forestville, NY
- Average rainfall in December: 2.76"
The wettest months (with the highest rainfall) are April and May (3.23").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in December
Forestville, NY
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is October (19.3 days).
The month with the least rainy days is February (8 days).
Average snowfall in December
Forestville, NY
- Average snowfall in December: 3.23"
The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Forestville, NY
- Average snowfall days in December: 11.5 days
The month with the highest number of snowfall days is January (15.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Forestville, NY
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 2h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in December
Forestville, NY
- Average sunshine days in December: 6.7 days
The month with the most sunshine days is September (14 days).
The month with the least sunshine days is January (6.2 days).
Average UV index in December
Forestville, 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
Forestville, 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 29).
Average visibility in December
Forestville, NY
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Forestville, New York, USA
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