December weather forecastHarbor, OH
December
Weather in December
The first month of the winter, December, is also an icy month in Harbor, Ohio, with an average temperature varying between 37°F (2.8°C) and 29.8°F (-1.2°C).Temperature
With December's arrival, Harbor sees a decrease in average high-temperatures, moving from a chilly 46.2°F (7.9°C) in November to a cold 37°F (2.8°C). Harbor records a slight downturn in temperature to an average of 29.8°F (-1.2°C) during December nights.Humidity
The average relative humidity in December is 84%.Rainfall
In Harbor, in December, during 10.9 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. In Harbor, during the entire year, the rain falls for 181 days and collects up to 36.34" (923mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 15.4 days. Throughout December, 5.08" (129mm) of snow is accumulated. In Harbor, during the entire year, snow falls for 71.4 days and aggregates up to 25.28" (642mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:32 am and sunset at 4:53 pm. On the last day of December, sunrise is at 7:50 am and sunset at 5:02 pm EST.
Sunshine
In December, the average sunshine is 2.9h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The average daily UV index of 1 in December transforms into the following instructions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. During bright days, sunglasses that offer UVA and UVB defense are recommended. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Harbor, OH
- Average high temperature in December: 37°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 29.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in December
Harbor, OH
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Harbor, OH
- Average wind speed in December: 11.3mph
The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in December
Harbor, OH
- Average humidity in December: 84%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July, August and September (78%).
Average rainfall in December
Harbor, OH
- Average rainfall in December: 2.72"
The wettest month (with the highest rainfall) is June (3.94").
The driest months (with the least rainfall) are February and November (2.4").
Average rainfall days in December
Harbor, OH
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is August (18.8 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in December
Harbor, OH
- Average snowfall in December: 5.08"
The month with the highest snowfall is January (6.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Harbor, OH
- Average snowfall days in December: 15.4 days
The month with the highest number of snowfall days is January (18.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Harbor, OH
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 2h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in December
Harbor, OH
- Average sunshine days in December: 6.7 days
The month with the most sunshine days is September (11 days).
The month with the least sunshine days is January (5.9 days).
Average UV index in December
Harbor, OH
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Harbor, OH
- Average cloud cover in December: 71
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Harbor, OH
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
