December weather forecastPosen, MI
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Posen, Michigan, with an average temperature varying between 25°F (-3.9°C) and 31.3°F (-0.4°C).Temperature
December's arrival correlates with a reduction in the average high-temperature, down from a cold 41°F (5°C) in November to a freezing cold 31.3°F (-0.4°C). Nighttime readings in Posen during December register a minimal drop from daytime highs, averaging at 25°F (-3.9°C).Humidity
In December, the average relative humidity in Posen is 83%.Rainfall
In Posen, Michigan, in December, it is raining for 7.5 days, with typically 1.46" (37mm) of accumulated precipitation. Throughout the year, in Posen, there are 133.1 rainfall days, and 22.44" (570mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Posen, during December, snow falls for 18.1 days and regularly aggregates up to 3.9" (99mm) of snow. Throughout the year, in Posen, there are 86.6 snowfall days, and 22.76" (578mm) of snow is accumulated.Daylight
December has the shortest days of the year in Posen, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:54 am and sunset at 4:53 pm. On the last day of December, in Posen, Michigan, sunrise is at 8:13 am and sunset at 5:02 pm EST.
Sunshine
The average sunshine in December is 2.2h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 1 during December translates into the following guidance:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. 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
Average temperature in December
Posen, MI
- Average high temperature in December: 31.3°F
The warmest month (with the highest average high temperature) is August (71.8°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in December: 25°F
The month with the highest average low temperature is August (60.4°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).
Average pressure in December
Posen, MI
- Average pressure in December: 30.03"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Posen, MI
- Average wind speed in December: 12.1mph
The windiest months (with the highest average wind speed) are January and December (12.1mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity in December
Posen, MI
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is May (76%).
Average rainfall in December
Posen, MI
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is October (2.76").
The driest month (with the least rainfall) is February (1.22").
Average rainfall days in December
Posen, MI
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is October (17.4 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in December
Posen, MI
- Average snowfall in December: 3.9"
The month with the highest snowfall is January (5.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Posen, MI
- Average snowfall days in December: 18.1 days
The month with the highest number of snowfall days is January (20.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Posen, MI
- Average daylight in December: 8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 2h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 1h and 42min).
Average sunshine days in December
Posen, MI
- Average sunshine days in December: 7.8 days
The month with the most sunshine days is May (15.9 days).
The month with the least sunshine days is January (6.4 days).
Average UV index in December
Posen, MI
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in December
Posen, MI
- Average cloud cover in December: 77
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Posen, MI
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
