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 introduces a moderate change in Altamont's weather, with average high-temperatures falling from November's frosty 48.9°F (9.4°C) to a cold 39.2°F (4°C). The average nighttime temperature lowers to a freezing cold 28°F (-2.2°C) throughout December.Humidity
In Altamont, the average relative humidity in December is 83%.Rainfall
In Altamont, in December, it is raining for 12.2 days, with typically 2.8" (71mm) of accumulated precipitation. In Altamont, during the entire year, the rain falls for 182 days and collects up to 33.15" (842mm) of precipitation.Snowfall
Months with snowfall in Altamont are January through May, October through December. In Altamont, in December, snow falls for 12.5 days, with typically accumulated 4.41" (112mm) of snow. Throughout the year, there are 59.6 snowfall days, and 22.2" (564mm) of snow is accumulated.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 7:26 am and sunset at 4:56 pm. On the last day of December, sunrise is at 7:45 am and sunset at 5:06 pm EST.
Sunshine
The average sunshine in December is 3.5h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 1 in December transforms into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Altamont have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Altamont have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Altamont, OH
- Average high temperature in December: 39.2°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in December: 28°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in December
Altamont, OH
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Altamont, OH
- Average wind speed in December: 7.4mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in December
Altamont, OH
- Average humidity in December: 83%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in December
Altamont, OH
- Average rainfall in December: 2.8"
The wettest month (with the highest rainfall) is April (3.39").
The driest month (with the least rainfall) is November (2.28").
Average rainfall days in December
Altamont, OH
- Average rainfall days in December: 12.2 days
The month with the highest number of rainy days is May (20.9 days).
The month with the least rainy days is February (10.3 days).
Average snowfall in December
Altamont, OH
- Average snowfall in December: 4.41"
The month with the highest snowfall is February (5.55").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Altamont, OH
- Average snowfall days in December: 12.5 days
The month with the highest number of snowfall days is January (16.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Altamont, 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 3min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Altamont, OH
- Average sunshine days in December: 10.9 days
The month with the most sunshine days is November (15 days).
The months with the least sunshine days are January and May (8.3 days).
Average UV index in December
Altamont, OH
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Altamont, OH
- Average cloud cover in December: 63
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Altamont, OH
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January and February (4mi).
Altamont, Ohio, USA
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