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
With December's onset, the weather shows a temperature decrease, transitioning from a frosty 46°F (7.8°C) in November to a wintry 34.9°F (1.6°C). Marcellus's nighttime average temperature in December drops marginally from the daytime highs, settling at a freezing cold 25.9°F (-3.4°C).Humidity
In Marcellus, the average relative humidity in December is 84%.Rainfall
The months with the least rainfall are January, February, November and December Rain falls for 6 days and accumulates 0.63" (16mm) of rain.Snowfall
Months with snowfall are January through May, October through December. In Marcellus, during December, snow falls for 8.7 days and regularly aggregates up to 0.59" (15mm) of snow. Throughout the year, there are 41.8 snowfall days, and 5.98" (152mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of December in Marcellus, Michigan, sunrise is at 7:52 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 8:11 am and sunset at 5:21 pm EST.
Sunshine
In Marcellus, the average sunshine in December is 3.3h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for average individuals.Note: A maximum UV index of 1 in December translates into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
What is the driest month?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Marcellus have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Marcellus, MI
- Average high temperature in December: 34.9°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 25.9°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in December
Marcellus, MI
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Marcellus, MI
- Average wind speed in December: 9.7mph
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 (6.3mph).
Average humidity in December
Marcellus, MI
- Average humidity in December: 84%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in December
Marcellus, MI
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is May (1.73").
The driest months (with the least rainfall) are January, February, November and December (0.63").
Average rainfall days in December
Marcellus, MI
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (4.4 days).
Average snowfall in December
Marcellus, MI
- Average snowfall in December: 0.59"
The month with the highest snowfall is January (1.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Marcellus, MI
- Average snowfall days in December: 8.7 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Marcellus, 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 2min
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 48min).
Average sunshine days in December
Marcellus, MI
- Average sunshine days in December: 18.5 days
The months with the most sunshine days are November and December (18.5 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in December
Marcellus, MI
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Marcellus, MI
- Average cloud cover in December: 66
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Marcellus, MI
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, July, August and September (5mi).
Marcellus, Michigan, USA
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