December weather forecastKnollton Heights, IN
December
Weather in December
December, the first month of the winter in Knollton Heights, is also a wintry month, with an average temperature fluctuating between 27.7°F (-2.4°C) and 38.3°F (3.5°C).Temperature
The decrease of average high-temperatures is mild in December, with a decline from a frosty 49.1°F (9.5°C) in November to a wintry 38.3°F (3.5°C). In Knollton Heights, an average temperature of 27.7°F (-2.4°C) is noted during December nights.Humidity
The most humid month in Knollton Heights is December, with an average relative humidity of 83%.Rainfall
In Knollton Heights, in December, it is raining for 9.7 days, with typically 1.97" (50mm) of accumulated precipitation. Throughout the year, in Knollton Heights, Indiana, there are 158.4 rainfall days, and 28.23" (717mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Knollton Heights, during December, snow falls for 8.4 days and regularly aggregates up to 2.6" (66mm) of snow. Throughout the year, there are 36.1 snowfall days, and 10.98" (279mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Knollton Heights, Indiana.On the first day of December in Knollton Heights, sunrise is at 7:47 am and sunset at 5:20 pm. On the last day of the month, sunrise is at 8:06 am and sunset at 5:30 pm EST.
Sunshine
In Knollton Heights, the average sunshine in December is 4.1h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 1 in December translates into these instructions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. 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
Average temperature in December
Knollton Heights, IN
- Average high temperature in December: 38.3°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in December
Knollton Heights, IN
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Knollton Heights, IN
- Average wind speed in December: 9.1mph
The windiest months (with the highest average wind speed) are January and February (9.9mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in December
Knollton Heights, IN
- Average humidity in December: 83%
The month with the highest relative humidity is December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Knollton Heights, IN
- Average rainfall in December: 1.97"
The wettest months (with the highest rainfall) are April and May (3.43").
The driest month (with the least rainfall) is February (1.65").
Average rainfall days in December
Knollton Heights, IN
- Average rainfall days in December: 9.7 days
The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in December
Knollton Heights, IN
- Average snowfall in December: 2.6"
The month with the highest snowfall is January (2.83").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Knollton Heights, IN
- Average snowfall days in December: 8.4 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Knollton Heights, IN
- Average daylight in December: 9h and 24min
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 6min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Knollton Heights, IN
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (9.6 days).
Average UV index in December
Knollton Heights, IN
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Knollton Heights, IN
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Knollton Heights, 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).
