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
In December, the average high-temperature goes from a chilly 45.3°F (7.4°C) in November to a cold 34.2°F (1.2°C). Napoleon's nighttime temperature in December experiences a slight dip from daytime highs, falling to an average of 25.2°F (-3.8°C).Humidity
In Napoleon, the average relative humidity in December is 84%.Rainfall
The month with the least rainfall is December, when the rain falls for 6.5 days and typically collects 0.87" (22mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Napoleon, in December, during 10.5 snowfall days, 1.54" (39mm) of snow is typically accumulated. Throughout the year, there are 51.4 snowfall days, and 13.11" (333mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:46 am and sunset at 5:05 pm. On the last day of December, sunrise is at 8:05 am and sunset at 5:15 pm EST.
Sunshine
In December, the average sunshine is 3.2h.UV index
The months with the lowest UV index are January and 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 average individuals.Note: The maximum UV index, 1 during December, leads to the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The Sun's radiation is especially intense around midday; try to stay in shade during this period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Napoleon?
What is the average humidity in December?
What is the driest month?
How much does it rain in Napoleon in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December in Napoleon?
When is the sunrise / sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Napoleon, MI
- Average high temperature in December: 34.2°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in December: 25.2°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in December
Napoleon, MI
- Average pressure in December: 30.08"Hg
The months with the highest atmospheric pressure are March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Napoleon, MI
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in December
Napoleon, MI
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Napoleon, MI
- Average rainfall in December: 0.87"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is December (0.87").
Average rainfall days in December
Napoleon, MI
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in December
Napoleon, MI
- Average snowfall in December: 1.54"
The month with the highest snowfall is February (3.66").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Napoleon, MI
- Average snowfall days in December: 10.5 days
The month with the highest number of snowfall days is January (13 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, MI
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Napoleon, MI
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in December
Napoleon, MI
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Napoleon, MI
- Average cloud cover in December: 66
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Napoleon, MI
- 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).
Napoleon, Michigan, USA
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