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 shift from November to December corresponds with a decrease in the average high-temperature, down to a wintry 39.2°F (4°C) from a chilly 49.1°F (9.5°C). In December, the nighttime temperature lowers to an average of 29.3°F (-1.5°C).Humidity
In December, the average relative humidity is 81%.Rainfall
In December, in Hilliard, the rain falls for 11.8 days. Throughout December, 2.56" (65mm) of precipitation is accumulated. Throughout the year, there are 171.2 rainfall days, and 33.54" (852mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In December, it is snowing for 8.7 days. Throughout December, 2.52" (64mm) of snow is accumulated. In Hilliard, during the entire year, snow falls for 41.8 days and aggregates up to 13.5" (343mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:35 am and sunset at 5:07 pm. On the last day of December, in Hilliard, sunrise is at 7:54 am and sunset at 5:17 pm EST.
Sunshine
In Hilliard, the average sunshine in December is 3.9h.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 reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 2 during December translates into the following guidance:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days in Hilliard?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Hilliard have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Hilliard, OH
- Average high temperature in December: 39.2°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in December
Hilliard, OH
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Hilliard, OH
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in December
Hilliard, OH
- Average humidity in December: 81%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are April, October and November (74%).
Average rainfall in December
Hilliard, OH
- Average rainfall in December: 2.56"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in December
Hilliard, OH
- Average rainfall days in December: 11.8 days
The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is January (9 days).
Average snowfall in December
Hilliard, OH
- Average snowfall in December: 2.52"
The months with the highest snowfall are January and February (3.39").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Hilliard, OH
- Average snowfall days in December: 8.7 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hilliard, OH
- 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: 3h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Hilliard, OH
- Average sunshine days in December: 12.7 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is May (9.3 days).
Average UV index in December
Hilliard, 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
Hilliard, OH
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Hilliard, OH
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Hilliard, Ohio, USA
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