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 average high-temperature decreases in December, shifting from a chilly 48.6°F (9.2°C) in November to a wintry 38.1°F (3.4°C). Extension Heights experiences an average low-temperature reading of 27.5°F (-2.5°C) throughout December.Humidity
The months with the highest humidity in Extension Heights are January and December, with an average relative humidity of 83%.Rainfall
In Extension Heights, in December, during 8.9 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. Throughout the year, in Extension Heights, there are 146.5 rainfall days, and 22.32" (567mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Extension Heights, in December, during 7.5 snowfall days, 2.17" (55mm) of snow is typically accumulated. Throughout the year, in Extension Heights, Indiana, there are 34.2 snowfall days, and 9.17" (233mm) of snow is accumulated.Daylight
The month with the shortest days in Extension Heights is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:46 am and sunset at 5:17 pm. On the last day of December, in Extension Heights, sunrise is at 8:04 am and sunset at 5:27 pm EST.
Sunshine
The average sunshine in December is 4h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
Is December cold in Extension Heights?
What are the most humid months in Extension Heights?
What is the average humidity in December in Extension Heights?
How much does it rain in Extension Heights in December?
How many days does it snow in December in Extension Heights?
What is the month with the shortest days in Extension Heights?
How many hours of daylight does Extension Heights have in December?
When are sunrise and sunset in December in Extension Heights?
How long on average sun shines in December in Extension Heights?
What is the month with the lowest UV index in Extension Heights?
What is the UV index reading in December in Extension Heights?
Average temperature in December
Extension Heights, IN
- Average high temperature in December: 38.1°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (32.2°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in December
Extension Heights, IN
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Extension Heights, IN
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in December
Extension Heights, IN
- Average humidity in December: 83%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Extension Heights, IN
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is May (2.8").
The driest month (with the least rainfall) is February (1.22").
Average rainfall days in December
Extension Heights, IN
- Average rainfall days in December: 8.9 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in December
Extension Heights, IN
- Average snowfall in December: 2.17"
The month with the highest snowfall is February (2.24").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Extension Heights, IN
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Extension Heights, IN
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Extension Heights, IN
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in December
Extension Heights, IN
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in December
Extension Heights, IN
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Extension Heights, IN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Extension Heights, Indiana, USA
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