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 December begins, there is a decrease in the average high-temperature, falling from a frosty 49.1°F (9.5°C) in November to a cold 37.6°F (3.1°C). An average low-temperature of 27.5°F (-2.5°C) is noted in Hillsboro during the month of December.Humidity
The average relative humidity in December is 81%.Rainfall
In Hillsboro, in December, it is raining for 8.2 days, with typically 1.34" (34mm) of accumulated precipitation. In Hillsboro, during the entire year, the rain falls for 142.3 days and collects up to 21.93" (557mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Hillsboro, in December, snow falls for 6.5 days, with typically accumulated 1.69" (43mm) of snow. Throughout the year, there are 30.7 snowfall days, and 7.91" (201mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:52 am and sunset at 5:23 pm. On the last day of the month, sunrise is at 8:10 am and sunset at 5:33 pm EST.
Sunshine
The average sunshine in December is 4.5h.UV index
The months with the lowest UV index in Hillsboro are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: In December, a regular UV index of 2 translates into these guidelines:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Frequently asked questions
How cold is it in Hillsboro in December?
What is the average humidity in December in Hillsboro?
How much does it rain in Hillsboro in December?
How many days does it snow in December in Hillsboro?
What is the month with the shortest days in Hillsboro?
What is the average length of the day in December in Hillsboro?
When are sunrise and sunset in December in Hillsboro?
How long on average sun shines in December in Hillsboro?
When is the lowest UV index in Hillsboro?
How high is the UV index in December in Hillsboro?
Average temperature in December
Hillsboro, IN
- Average high temperature in December: 37.6°F
The warmest month (with the highest average high temperature) is July (81.7°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
Hillsboro, 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
Hillsboro, IN
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Hillsboro, IN
- Average humidity in December: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Hillsboro, IN
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in December
Hillsboro, IN
- Average rainfall days in December: 8.2 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in December
Hillsboro, IN
- Average snowfall in December: 1.69"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Hillsboro, IN
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hillsboro, 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 3min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Hillsboro, IN
- Average sunshine days in December: 17.7 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in December
Hillsboro, 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, November and December (UV index 2).
Average cloud cover in December
Hillsboro, IN
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are June, August and September (Cloud cover 32).
Average visibility in December
Hillsboro, IN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Hillsboro, Indiana, USA
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