December weather forecast
Neptune, OH

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Weather in December

December, the first month of the winter in Neptune, is still a cold month, with an average temperature fluctuating between 37.6°F (3.1°C) and 27.3°F (-2.6°C).

Temperature

A moderate decline in the average high-temperature is seen during December, decreasing from a chilly 48.4°F (9.1°C) in November to a wintry 37.6°F (3.1°C). An average nighttime temperature of 27.3°F (-2.6°C) is witnessed throughout December.

Humidity

January, February and December, with an average relative humidity of 83%, are the most humid months in Neptune.

Rainfall

In Neptune, in December, it is raining for 8.2 days, with typically 1.26" (32mm) of accumulated precipitation. In Neptune, during the entire year, the rain falls for 137.8 days and collects up to 19.13" (486mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Neptune, during December, snow falls for 8.2 days and regularly aggregates up to 1.57" (40mm) of snow. Throughout the year, in Neptune, there are 37.6 snowfall days, and 8.15" (207mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:42 am and sunset at 5:11 pm. On the last day of the month, sunrise is at 8:01 am and sunset at 5:21 pm EST.

Sunshine

In December, the average sunshine in Neptune, Ohio, is 3.8h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index in Neptune, Ohio. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 1 during December translates into the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

Is December cold in Neptune?

Neptune in December has an average high-temperature of 37.6°F (3.1°C) and an average low-temperature of 27.3°F (-2.6°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 86°F (30°C).

What is the most humid month in Neptune?

January, February and December, with an average relative humidity of 83%, are most humid months in Neptune.

What is the average humidity in December in Neptune?

In Neptune, the average relative humidity in December is 83%.

How much does it rain in Neptune in December?

In Neptune, in December, it is raining for 8.2 days, with typically 1.26" (32mm) of accumulated precipitation.

How much does it snow in Neptune in December?

In Neptune, in December, snow falls for 8.2 days, with typically accumulated 1.57" (40mm) of snow.

What is the month with the shortest days in Neptune?

December has the shortest days of the year in Neptune, Ohio, with an average of 9h and 18min of daylight.

What is the average length of the day in December in Neptune?

The average day length in December in Neptune is 9h and 20min.

What time are sunrise and sunset in December in Neptune?

In December, on the first day of the month, sunrise is at 7:42 am and sunset at 5:11 pm. On the last day of the month, in Neptune, sunrise is at 8:01 am and sunset at 5:21 pm EST.

How many hours of sunshine does Neptune have in December?

In Neptune, Ohio, the average sunshine duration in December is 3.8h.

When is the lowest UV index in Neptune?

With an average maximum UV index of 1, December is the month with the lowest UV index in Neptune, Ohio.

How high is the UV index in December in Neptune?

In Neptune, Ohio, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Neptune, OH

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).

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Average pressure in December
Neptune, OH

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).

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Average wind speed in December
Neptune, OH

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).

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Average humidity in December
Neptune, OH

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%).

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Average rainfall in December
Neptune, OH

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").

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Average rainfall days in December
Neptune, OH

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).

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Average snowfall in December
Neptune, OH

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").

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Average snowfall days in December
Neptune, OH

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).

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Average daylight in December /
Average sunshine in December
Neptune, OH

Average daylight in December / Average sunshine in December - Neptune, 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 18min).

  • Average sunshine in December: 3h and 5min

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).

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Average sunshine days in December
Neptune, OH

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).

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Average UV index in December
Neptune, OH

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).

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Average cloud cover in December
Neptune, OH

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).

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Average visibility in December
Neptune, OH

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).

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Neptune, Ohio, USA

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