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
The transition into December indicates a reduction in the average high-temperature, down to an icy 33.6°F (0.9°C) from November's chilly 45°F (7.2°C). Mason logs an average low-temperature of 24.8°F (-4°C) during the nights of December, subtly lower than its daytime highs.Humidity
In December, the average relative humidity in Mason is 84%.Rainfall
In Mason, in December, during 4.5 rainfall days, 0.39" (10mm) of precipitation is typically accumulated. In Mason, during the entire year, the rain falls for 96.4 days and collects up to 7.32" (186mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Mason, in December, snow falls for 8.5 days, with typically accumulated 0.47" (12mm) of snow. In Mason, during the entire year, snow falls for 42.9 days and aggregates up to 3.86" (98mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:48 am and sunset at 5:05 pm. On the last day of December, in Mason, sunrise is at 8:07 am and sunset at 5:14 pm EST.
Sunshine
In December, the average sunshine in Mason is 3.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Mason. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the maximum UV index of 1 transforms into these recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Experience reduced UV exposure by about half when donning a wide-brim hat. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Frequently asked questions
How cold is December in Mason?
What is the average humidity in December in Mason?
How much does it rain in Mason in December?
How much does it snow in Mason in December?
What is the month with the shortest days in Mason?
What is the average length of the day in December in Mason?
What time are sunrise and sunset in December in Mason?
How many hours of sunshine does Mason have in December?
When is the lowest UV index in Mason?
How high is the UV index in December in Mason?
Average temperature in December
Mason, MI
- Average high temperature in December: 33.6°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in December: 24.8°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in December
Mason, MI
- Average pressure in December: 30.07"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
Mason, MI
- Average wind speed in December: 9.8mph
The windiest months (with the highest average wind speed) are January, February and April (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in December
Mason, 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
Mason, MI
- Average rainfall in December: 0.39"
The wettest month (with the highest rainfall) is May (0.94").
The driest month (with the least rainfall) is February (0.35").
Average rainfall days in December
Mason, MI
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is May (12.7 days).
The month with the least rainy days is February (3 days).
Average snowfall in December
Mason, MI
- Average snowfall in December: 0.47"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Mason, MI
- Average snowfall days in December: 8.5 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Mason, MI
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- 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 42min).
Average sunshine days in December
Mason, MI
- Average sunshine days in December: 20.9 days
The month with the most sunshine days is December (20.9 days).
The month with the least sunshine days is May (14.8 days).
Average UV index in December
Mason, 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
Mason, MI
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Mason, MI
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, August and September (5mi).
Mason, Michigan, USA
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