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
With December's arrival, Harlansburg sees a decrease in average high-temperatures, moving from a chilly 47.3°F (8.5°C) in November to a wintry 36.5°F (2.5°C). Throughout December nights, Harlansburg experiences a consistent temperature average of 26.6°F (-3°C).Humidity
The average relative humidity in December in Harlansburg is 83%.Rainfall
In December, the rain falls for 8.5 days. Throughout December, 1.57" (40mm) of precipitation is accumulated. Throughout the year, in Harlansburg, there are 153.8 rainfall days, and 25" (635mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Harlansburg, in December, snow falls for 10.1 days, with typically accumulated 1.93" (49mm) of snow. Throughout the year, there are 47.8 snowfall days, and 11.93" (303mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:47 am and sunset at 5:15 pm. On the last day of December, sunrise is at 8:06 am and sunset at 5:24 pm EST.
Sunshine
In December, the average sunshine in Harlansburg, Indiana, is 3.8h.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 2 in December transforms into this advice:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Harlansburg?
What is the average humidity in December in Harlansburg?
How much does it rain in Harlansburg in December?
How many days does it snow in December in Harlansburg?
What is the month with the shortest days in Harlansburg?
What is the average length of the day in December in Harlansburg?
When are sunrise and sunset in December in Harlansburg?
How many hours of sunshine does Harlansburg have in December?
What is the month with the lowest UV index in Harlansburg?
How high is the UV index in December in Harlansburg?
Average temperature in December
Harlansburg, IN
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in December: 26.6°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in December
Harlansburg, IN
- Average pressure in December: 30.1"Hg
The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Harlansburg, 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 (6.2mph).
Average humidity in December
Harlansburg, IN
- Average humidity in December: 83%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Harlansburg, IN
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is April (3.07").
The driest month (with the least rainfall) is February (1.42").
Average rainfall days in December
Harlansburg, IN
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in December
Harlansburg, IN
- Average snowfall in December: 1.93"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Harlansburg, IN
- Average snowfall days in December: 10.1 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Harlansburg, IN
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Harlansburg, IN
- Average sunshine days in December: 13.7 days
The month with the most sunshine days is October (16 days).
The months with the least sunshine days are February and May (10.5 days).
Average UV index in December
Harlansburg, IN
- Average UV index in December: 2
The month with the highest UV index is June (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
Harlansburg, IN
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Harlansburg, IN
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, September, October, November and December (6mi).
The months with the lowest visibility are January and August (5mi).
Harlansburg, Indiana, USA
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