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
December's arrival comes with a decrease in the average high-temperature, moving from a chilly 49.1°F (9.5°C) in November to an icy 38.8°F (3.8°C). During the month of December, the nighttime temperature in London, Ohio, falls to an average of 29.1°F (-1.6°C).Humidity
The average relative humidity in December is 82%.Rainfall
In December, the rain falls for 9.1 days. Throughout December, 1.61" (41mm) of precipitation is accumulated. Throughout the year, in London, there are 150 rainfall days, and 22.56" (573mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In London, in December, during 5.7 snowfall days, 1.3" (33mm) of snow is typically accumulated. In London, during the entire year, snow falls for 27.5 days and aggregates up to 6.18" (157mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:36 am and sunset at 5:09 pm. On the last day of December, sunrise is at 7:55 am and sunset at 5:19 pm EST.
Sunshine
In London, the average sunshine in December is 3.9h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.Note: In December, the maximum UV index of 2 suggests this advice:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in London?
What is the average humidity in December in London?
How many days does it rain in December in London?
How many days does it snow in December in London?
What is the month with the shortest days in London?
What is the average length of the day in December in London?
When is the sunrise / sunset in December in London?
How many hours of sunshine does London have in December?
When is the lowest UV index in London?
What is the UV index intensity in December in London?
Average temperature in December
London, OH
- Average high temperature in December: 38.8°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 29.1°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in December
London, 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
London, OH
- Average wind speed in December: 9.5mph
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 (5.8mph).
Average humidity in December
London, OH
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in December
London, OH
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is November (1.3").
Average rainfall days in December
London, OH
- Average rainfall days in December: 9.1 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in December
London, OH
- Average snowfall in December: 1.3"
The month with the highest snowfall is February (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
London, OH
- Average snowfall days in December: 5.7 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
London, 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 12min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in December
London, OH
- Average sunshine days in December: 16.6 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in December
London, OH
- 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
London, 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
London, 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).
London, Ohio, USA
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