December weather forecastNeptune, OH
December
Weather in December
The first month of the winter, December, is still a cold month in Neptune, Ohio, with an average temperature fluctuating between 37.6°F (3.1°C) and 27.3°F (-2.6°C).Temperature
The shift from November to December involves a decrease in the average high-temperature, dropping from a frosty 48.4°F (9.1°C) to an icy 37.6°F (3.1°C). Throughout the month of December, Neptune witnesses an average temperature of 27.3°F (-2.6°C).Humidity
January, February and December, with an average relative humidity of 83%, are the most humid months.Rainfall
In Neptune, in December, it is raining for 8.2 days, with typically 1.26" (32mm) of accumulated precipitation. Throughout the year, there are 137.8 rainfall days, and 19.13" (486mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In December, it is snowing for 8.2 days. Throughout December, 1.57" (40mm) of snow is accumulated. Throughout the year, there are 37.6 snowfall days, and 8.15" (207mm) of snow is accumulated.Daylight
December has the shortest days of the year in Neptune, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:42 am and sunset at 5:11 pm. On the last day of December, in Neptune, sunrise is at 8:01 am and sunset at 5:21 pm EST.
Sunshine
In December, the average sunshine is 3.8h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 1 in December translates into these instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Neptune, OH
- Average high temperature in December: 37.6°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in December: 27.3°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in December
Neptune, OH
- Average pressure in December: 30.11"Hg
The months with the highest atmospheric pressure are January and November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Neptune, OH
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
Neptune, OH
- Average humidity in December: 83%
The months with the highest relative humidity are January, February and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Neptune, OH
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is May (2.4").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in December
Neptune, OH
- Average rainfall days in December: 8.2 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in December
Neptune, OH
- Average snowfall in December: 1.57"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Neptune, OH
- Average snowfall days in December: 8.2 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Neptune, OH
- Average daylight in December: 9h and 18min
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 18min).
- Average sunshine in December: 3h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Neptune, OH
- Average sunshine days in December: 16.1 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in December
Neptune, OH
- Average UV index in December: 1
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Neptune, OH
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Neptune, OH
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).
