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
Arrival of December comes with a reduction in the average high-temperature, falling from a frosty 49.8°F (9.9°C) in November to a wintry 39.6°F (4.2°C). Throughout December, the average low-temperature dips to a freezing cold 29.1°F (-1.6°C).Humidity
In Harrisburg, the average relative humidity in December is 82%.Rainfall
In Harrisburg, Ohio, in December, it is raining for 9 days, with typically 1.1" (28mm) of accumulated precipitation. Throughout the year, in Harrisburg, Ohio, there are 134.1 rainfall days, and 14.53" (369mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Harrisburg, during December, snow falls for 6.1 days and regularly aggregates up to 0.75" (19mm) of snow. In Harrisburg, during the entire year, snow falls for 28.8 days and aggregates up to 4.45" (113mm) of snow.Daylight
December has the shortest days of the year in Harrisburg, with an average of 9h and 24min of daylight.On the first day of December in Harrisburg, sunrise is at 7:35 am and sunset at 5:08 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 5:18 pm EST.
Sunshine
In Harrisburg, Ohio, the average sunshine in December is 4.1h.UV index
The months with the lowest UV index 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 threat to health from exposure to the Sun's UV rays for average individuals.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Experience reduced UV exposure by about half when donning a wide-brim hat. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Frequently asked questions
Is December cold in Harrisburg?
What is the average humidity in December in Harrisburg?
How much does it rain in Harrisburg in December?
How many days does it snow in December in Harrisburg?
What is the month with the shortest days in Harrisburg?
What is the average length of the day in December in Harrisburg?
When are sunrise and sunset in December in Harrisburg?
How many hours of sunshine does Harrisburg have in December?
What are the months with the lowest UV index in Harrisburg?
What is the UV index reading in December in Harrisburg?
Average temperature in December
Harrisburg, OH
- Average high temperature in December: 39.6°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 29.1°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Harrisburg, OH
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Harrisburg, OH
- Average wind speed in December: 9mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Harrisburg, OH
- Average humidity in December: 82%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in December
Harrisburg, OH
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is May (1.81").
The driest month (with the least rainfall) is September (0.87").
Average rainfall days in December
Harrisburg, OH
- Average rainfall days in December: 9 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (7.6 days).
Average snowfall in December
Harrisburg, OH
- Average snowfall in December: 0.75"
The month with the highest snowfall is January (1.22").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Harrisburg, OH
- Average snowfall days in December: 6.1 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Harrisburg, OH
- Average daylight in December: 9h and 2min
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 24min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Harrisburg, OH
- Average sunshine days in December: 17.7 days
The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in December
Harrisburg, OH
- 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
Harrisburg, OH
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Harrisburg, OH
- 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).
Harrisburg, Ohio, USA
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