December weather forecastHillsboro, OH
December
Weather in December
December, the first month of the winter in Hillsboro, is also a wintry month, with temperature in the range of an average high of 40.8°F (4.9°C) and an average low of 30°F (-1.1°C).Temperature
December's arrival comes with a decrease in the average high-temperature, moving from a fresh 50.9°F (10.5°C) in November to an icy 40.8°F (4.9°C). Hillsboro in December anticipates an average nighttime temperature of 30°F (-1.1°C).Humidity
The months with the highest humidity in Hillsboro are January, February and December, with an average relative humidity of 82%.Rainfall
In Hillsboro, in December, it is raining for 12.1 days, with typically 3.03" (77mm) of accumulated precipitation. In Hillsboro, during the entire year, the rain falls for 174 days and collects up to 34.72" (882mm) of precipitation.Snowfall
Months with snowfall in Hillsboro are January through April, October through December. In December, it is snowing for 9.3 days. Throughout December, 2.99" (76mm) of snow is accumulated. Throughout the year, there are 40.1 snowfall days, and 15.04" (382mm) of snow is accumulated.Daylight
The month with the shortest days in Hillsboro, Ohio, is December, with an average of 9h and 30min of daylight.On the first day of December in Hillsboro, Ohio, sunrise is at 7:35 am and sunset at 5:11 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 5:21 pm EST.
Sunshine
The average sunshine in December is 4.1h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 1 during December leads to these advisories:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. 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
Hillsboro, OH
- Average high temperature in December: 40.8°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 30°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 (22.8°F).
Average pressure in December
Hillsboro, 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 (29.95"Hg).
Average wind speed in December
Hillsboro, OH
- Average wind speed in December: 8.8mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Hillsboro, OH
- Average humidity in December: 82%
The months with the highest relative humidity are January, February and December (82%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in December
Hillsboro, OH
- Average rainfall in December: 3.03"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in December
Hillsboro, OH
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (10.3 days).
Average snowfall in December
Hillsboro, OH
- Average snowfall in December: 2.99"
The month with the highest snowfall is February (4.06").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Hillsboro, OH
- Average snowfall days in December: 9.3 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hillsboro, OH
- Average daylight in December: 9h and 30min
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 30min).
- Average sunshine in December: 4h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Hillsboro, OH
- Average sunshine days in December: 12.2 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (8.9 days).
Average UV index in December
Hillsboro, OH
- 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
Hillsboro, OH
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Hillsboro, OH
- Average visibility in December: 6mi
The months with the highest visibility are March, April, June, August, October, November and December (6mi).
The months with the lowest visibility are January, February, May, July and September (5mi).
