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
Decker's progression into December includes a drop in the average high-temperature, from a chilly 43.9°F (6.6°C) in November to an icy 33.1°F (0.6°C). Decker records a consistent average nighttime temperature of 25°F (-3.9°C) in December, slightly lower than the daytime high.Humidity
In Decker, Michigan, the average relative humidity in December is 84%.Rainfall
December is the month with the least rainfall in Decker. Rain falls for 6.5 days and accumulates 1.1" (28mm) of precipitation.Snowfall
Months with snowfall in Decker, Michigan, are January through May, October through December. In Decker, in December, during 12.4 snowfall days, 2.56" (65mm) of snow is typically accumulated. Throughout the year, in Decker, there are 61.5 snowfall days, and 17.95" (456mm) of snow is accumulated.Daylight
The month with the shortest days in Decker is December, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:45 am and sunset at 4:57 pm. On the last day of December, sunrise is at 8:04 am and sunset at 5:06 pm EST.
Sunshine
In December, the average sunshine in Decker is 3.1h.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 low threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Frequently asked questions
How cold is it in Decker in December?
What is the average humidity in December in Decker?
What is the driest month in Decker?
How many days does it rain in December in Decker?
How much does it snow in Decker in December?
What is the month with the shortest days in Decker?
How many hours of daylight does Decker have in December?
When are sunrise and sunset in December in Decker?
How many hours of sunshine does Decker have in December?
When is the lowest UV index in Decker?
What is the UV index reading in December in Decker?
Average temperature in December
Decker, MI
- Average high temperature in December: 33.1°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (26.6°F).
- Average low temperature in December: 25°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in December
Decker, MI
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Decker, MI
- Average wind speed in December: 10.3mph
The windiest months (with the highest average wind speed) are January and February (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in December
Decker, MI
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are April and May (77%).
Average rainfall in December
Decker, MI
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is May (2.52").
The driest month (with the least rainfall) is December (1.1").
Average rainfall days in December
Decker, MI
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (4 days).
Average snowfall in December
Decker, MI
- Average snowfall in December: 2.56"
The month with the highest snowfall is February (4.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Decker, MI
- Average snowfall days in December: 12.4 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
Decker, MI
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in December
Decker, MI
- Average sunshine days in December: 14.3 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is July (11.1 days).
Average UV index in December
Decker, 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
Decker, MI
- Average cloud cover in December: 68
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
Decker, MI
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Decker, Michigan, USA
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