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 average high-temperature decreases in December, shifting from a fresh 52°F (11.1°C) in November to a frosty 43°F (6.1°C). In West Portsmouth, the average nighttime temperature during December is a subzero cold 31.1°F (-0.5°C).Humidity
February and December, with an average relative humidity of 81%, are the most humid months in West Portsmouth.Rainfall
In West Portsmouth, in December, during 13.4 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. Throughout the year, in West Portsmouth, Ohio, there are 170.4 rainfall days, and 31.02" (788mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In West Portsmouth, in December, snow falls for 8.4 days, with typically accumulated 2.13" (54mm) of snow. In West Portsmouth, during the entire year, snow falls for 36.7 days and aggregates up to 11.57" (294mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:31 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 5:20 pm EST.
Sunshine
In December, the average sunshine in West Portsmouth, Ohio, is 4.1h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Always opt for UVA and UVB-resistant sunglasses on radiant days. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in West Portsmouth in December?
What is the most humid month in West Portsmouth?
What is the average humidity in December in West Portsmouth?
How much does it rain in West Portsmouth in December?
How many days does it snow in December in West Portsmouth?
What is the month with the shortest days in West Portsmouth?
How many hours of daylight does West Portsmouth have in December?
When are sunrise and sunset in December in West Portsmouth?
How many hours of sunshine does West Portsmouth have in December?
What are the months with the lowest UV index in West Portsmouth?
What is the UV index intensity in December in West Portsmouth?
Average temperature in December
West Portsmouth, OH
- Average high temperature in December: 43°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in December: 31.1°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
West Portsmouth, OH
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
West Portsmouth, OH
- Average wind speed in December: 7mph
The windiest months (with the highest average wind speed) are January and February (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
West Portsmouth, OH
- Average humidity in December: 81%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is August (75%).
Average rainfall in December
West Portsmouth, OH
- Average rainfall in December: 2.95"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
West Portsmouth, OH
- Average rainfall days in December: 13.4 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (10.5 days).
Average snowfall in December
West Portsmouth, OH
- Average snowfall in December: 2.13"
The month with the highest snowfall is January (3.19").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
West Portsmouth, OH
- Average snowfall days in December: 8.4 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
West Portsmouth, OH
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
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 24min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
West Portsmouth, OH
- Average sunshine days in December: 11.9 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is February (10 days).
Average UV index in December
West Portsmouth, 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
West Portsmouth, 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 30).
Average visibility in December
West Portsmouth, OH
- Average visibility in December: 5mi
The months with the highest visibility are March, April, June, October and November (6mi).
The months with the lowest visibility are January, February, May, July, August, September and December (5mi).
West Portsmouth, Ohio, USA
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