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
As November shifts into December, a slight alteration in temperatures is observed, with average highs reducing from a fresh 51.3°F (10.7°C) to a cold 40.8°F (4.9°C). Graysville's nights in December cool down to an average low-temperature of 29.5°F (-1.4°C).Humidity
The average relative humidity in December is 80%.Rainfall
In Graysville, in December, it is raining for 9.4 days, with typically 2.24" (57mm) of accumulated precipitation. In Graysville, Indiana, during the entire year, the rain falls for 150.1 days and collects up to 28.5" (724mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Graysville. In Graysville, in December, during 5.2 snowfall days, 1.57" (40mm) of snow is typically accumulated. Throughout the year, in Graysville, there are 23.8 snowfall days, and 6.89" (175mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:51 am and sunset at 5:27 pm. On the last day of December, in Graysville, sunrise is at 8:09 am and sunset at 5:37 pm EST.
Sunshine
With an average of 4.4h of sunshine, December has the least sunshine of the year in Graysville.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Graysville. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In December, an average UV index of 2 transforms into the following instructions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
How cold does it get in Graysville in December?
What is the average humidity in December in Graysville?
How many days does it rain in December in Graysville?
How much does it snow in Graysville in December?
What is the month with the shortest days in Graysville?
What is the average length of the day in December in Graysville?
When are sunrise and sunset in December in Graysville?
What is the month with the least sunshine in Graysville?
How many hours of sunshine does Graysville have in December?
What are the months with the lowest UV index in Graysville?
How high is the UV index in December in Graysville?
Average temperature in December
Graysville, IN
- Average high temperature in December: 40.8°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in December: 29.5°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in December
Graysville, IN
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Graysville, IN
- Average wind speed in December: 8.9mph
The windiest months (with the highest average wind speed) are January and February (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in December
Graysville, IN
- Average humidity in December: 80%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Graysville, IN
- Average rainfall in December: 2.24"
The wettest month (with the highest rainfall) is April (4.06").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in December
Graysville, IN
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in December
Graysville, IN
- Average snowfall in December: 1.57"
The month with the highest snowfall is January (2.13").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Graysville, IN
- Average snowfall days in December: 5.2 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Graysville, IN
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 24min).
Average sunshine days in December
Graysville, IN
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in December
Graysville, IN
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Graysville, IN
- Average cloud cover in December: 53
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Graysville, IN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Graysville, Indiana, USA
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