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
Londonderry in December experiences a subtle temperature decline, with average high-temperatures reducing from a fresh 51.1°F (10.6°C) in November to a wintry 41.5°F (5.3°C). The average nighttime temperature lowers to a subzero cold 30.4°F (-0.9°C) throughout December.Humidity
The average relative humidity in December in Londonderry, Ohio, is 81%.Rainfall
In Londonderry, in December, during 11 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. In Londonderry, during the entire year, the rain falls for 156.4 days and collects up to 25.63" (651mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Londonderry, during December, snow falls for 6.8 days and regularly aggregates up to 1.57" (40mm) of snow. Throughout the year, there are 31.6 snowfall days, and 8.94" (227mm) of snow is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:32 am and sunset at 5:08 pm. On the last day of December, sunrise is at 7:50 am and sunset at 5:18 pm EST.
Sunshine
The average sunshine in December in Londonderry is 4.2h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 1 in December translates into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
How cold is December in Londonderry?
What is the average humidity in December in Londonderry?
How much does it rain in Londonderry in December?
How many days does it snow in December in Londonderry?
What is the month with the shortest days in Londonderry?
How many hours of daylight does Londonderry have in December?
When are sunrise and sunset in December in Londonderry?
How many hours of sunshine does Londonderry have in December?
What is the month with the lowest UV index in Londonderry?
How high is the UV index in December in Londonderry?
Average temperature in December
Londonderry, OH
- Average high temperature in December: 41.5°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in December: 30.4°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in December
Londonderry, OH
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Londonderry, OH
- Average wind speed in December: 7.8mph
The windiest months (with the highest average wind speed) are January and February (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Londonderry, OH
- Average humidity in December: 81%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is November (75%).
Average rainfall in December
Londonderry, OH
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in December
Londonderry, OH
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is November (8.4 days).
Average snowfall in December
Londonderry, OH
- Average snowfall in December: 1.57"
The month with the highest snowfall is January (2.48").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Londonderry, OH
- Average snowfall days in December: 6.8 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Londonderry, OH
- Average daylight in December: 9h and 3min
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 1min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Londonderry, OH
- Average sunshine days in December: 14.9 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (9.8 days).
Average UV index in December
Londonderry, 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
Londonderry, 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 28).
Average visibility in December
Londonderry, OH
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, June, August, October, November and December (6mi).
The months with the lowest visibility are January, May, July and September (5mi).
Londonderry, Ohio, USA
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