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
December brings a drop in Thornton Grove's average high-temperature, falling from a chilly 44.6°F (7°C) in November to a cold 34.3°F (1.3°C). Thornton Grove sees a minor drop to an average minimum temperature of 25.3°F (-3.7°C) during the night in the month of December.Humidity
In December, the average relative humidity in Thornton Grove is 86%.Rainfall
In Thornton Grove, in December, it is raining for 8.9 days, with typically 1.1" (28mm) of accumulated precipitation. Throughout the year, in Thornton Grove, there are 137.8 rainfall days, and 13.74" (349mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Thornton Grove, in December, during 15.1 snowfall days, 3.23" (82mm) of snow is typically accumulated. Throughout the year, in Thornton Grove, there are 76.2 snowfall days, and 16.93" (430mm) of snow is accumulated.Daylight
The month with the shortest days in Thornton Grove is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:17 am and sunset at 4:32 pm. On the last day of December, in Thornton Grove, sunrise is at 7:36 am and sunset at 4:41 pm EST.
Sunshine
In December, the average sunshine in Thornton Grove is 3h.UV index
The months with the lowest UV index in Thornton Grove are February and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum UV index of 1 in December translates into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Frequently asked questions
How cold is it in Thornton Grove in December?
What is the average humidity in December in Thornton Grove?
How much does it rain in Thornton Grove in December?
How much does it snow in Thornton Grove in December?
What is the month with the shortest days in Thornton Grove?
What is the average length of the day in December in Thornton Grove?
When are sunrise and sunset in December in Thornton Grove?
How long on average sun shines in December in Thornton Grove?
When is the lowest UV index in Thornton Grove?
What is the UV index reading in December in Thornton Grove?
Average temperature in December
Thornton Grove, NY
- Average high temperature in December: 34.3°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 (27.9°F).
- Average low temperature in December: 25.3°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in December
Thornton Grove, 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
Thornton Grove, NY
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity in December
Thornton Grove, NY
- Average humidity in December: 86%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April and May (79%).
Average rainfall in December
Thornton Grove, NY
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in December
Thornton Grove, NY
- Average rainfall days in December: 8.9 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in December
Thornton Grove, NY
- Average snowfall in December: 3.23"
The month with the highest snowfall is February (3.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Thornton Grove, NY
- Average snowfall days in December: 15.1 days
The month with the highest number of snowfall days is January (18.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Thornton Grove, 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 0min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).
Average sunshine days in December
Thornton Grove, NY
- Average sunshine days in December: 10.5 days
The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is February (7.9 days).
Average UV index in December
Thornton Grove, 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
Thornton Grove, NY
- Average cloud cover in December: 70
The month with the most cloud cover is February (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in December
Thornton Grove, NY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, July and December (5mi).
Thornton Grove, New York, USA
Weather forecast for your location
2. Allow the app to use your location
