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 onset of December comes with a shift in the average high-temperature, falling from a fresh 50.5°F (10.3°C) in November to a cold 40.5°F (4.7°C). In the month of December, the average low-temperature in Adelphi usually rests at a subzero cold 29.7°F (-1.3°C).Humidity
The average relative humidity in December in Adelphi is 81%.Rainfall
In Adelphi, in December, it is raining for 11.7 days, with typically 2.8" (71mm) of accumulated precipitation. In Adelphi, during the entire year, the rain falls for 168.9 days and collects up to 32.4" (823mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Adelphi, Ohio. In Adelphi, in December, snow falls for 8.4 days, with typically accumulated 2.64" (67mm) of snow. In Adelphi, during the entire year, snow falls for 39.4 days and aggregates up to 13.58" (345mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December in Adelphi, sunrise is at 7:32 am and sunset at 5:07 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 5:17 pm EST.
Sunshine
In December, the average sunshine is 4.2h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Adelphi, Ohio. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum UV index of 2 in December translates into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in Adelphi in December?
What is the average humidity in December in Adelphi?
How many days does it rain in December in Adelphi?
How much does it snow in Adelphi in December?
What is the month with the shortest days in Adelphi?
How many hours of daylight does Adelphi have in December?
What time are sunrise and sunset in December in Adelphi?
How many hours of sunshine does Adelphi have in December?
When is the lowest UV index in Adelphi?
What is the UV index intensity in December in Adelphi?
Average temperature in December
Adelphi, OH
- Average high temperature in December: 40.5°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (34.9°F).
- Average low temperature in December: 29.7°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 (22.3°F).
Average pressure in December
Adelphi, 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 (29.94"Hg).
Average wind speed in December
Adelphi, OH
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in December
Adelphi, OH
- Average humidity in December: 81%
The months with the highest relative humidity are January and February (82%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in December
Adelphi, OH
- Average rainfall in December: 2.8"
The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Adelphi, OH
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (9.7 days).
Average snowfall in December
Adelphi, OH
- Average snowfall in December: 2.64"
The months with the highest snowfall are January and February (3.43").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Adelphi, OH
- Average snowfall days in December: 8.4 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Adelphi, OH
- Average daylight in December: 9h and 2min
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 24min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Adelphi, OH
- Average sunshine days in December: 12.9 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is May (9.2 days).
Average UV index in December
Adelphi, 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
Adelphi, OH
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Adelphi, 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).
Adelphi, Ohio, USA
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