December weather forecastNapoleon, OH
December
Weather in December
December, the first month of the winter in Napoleon, is also a wintry month, with an average temperature varying between 27°F (-2.8°C) and 36.1°F (2.3°C).Temperature
The arrival of December indicates a decrease in the average high-temperature, moving from a chilly 47.3°F (8.5°C) in November to a wintry 36.1°F (2.3°C). In the month of December, Napoleon witnesses a consistent average low-temperature of 27°F (-2.8°C).Humidity
In December, the average relative humidity is 83%.Rainfall
December is the month with the least rainfall. Rain falls for 11 days and accumulates 1.61" (41mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. In Napoleon, Ohio, in December, during 11.8 snowfall days, 2.8" (71mm) of snow is typically accumulated. In Napoleon, Ohio, during the entire year, snow falls for 52.7 days and aggregates up to 15.24" (387mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 7:43 am and sunset at 5:07 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 5:17 pm EST.
Sunshine
In Napoleon, the average sunshine in December is 3.8h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In December, a daily UV index of 1 turns into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Napoleon, OH
- Average high temperature in December: 36.1°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 27°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in December
Napoleon, OH
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Napoleon, OH
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in December
Napoleon, OH
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Napoleon, OH
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is April (3.15").
The driest month (with the least rainfall) is December (1.61").
Average rainfall days in December
Napoleon, OH
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is February (8.6 days).
Average snowfall in December
Napoleon, OH
- Average snowfall in December: 2.8"
The month with the highest snowfall is February (4.09").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Napoleon, OH
- Average snowfall days in December: 11.8 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Napoleon, OH
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 3h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Napoleon, OH
- Average sunshine days in December: 11.9 days
The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in December
Napoleon, OH
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Napoleon, OH
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Napoleon, OH
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, August and September (5mi).
