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
Chatham's average high-temperature decreases in December, falling from an icy 39.4°F (4.1°C) in November to a freezing cold 29.3°F (-1.5°C). Chatham experiences an average nighttime temperature of 23°F (-5°C) in December, reflecting a minor difference from the day's peak.Humidity
The average relative humidity in December is 84%.Rainfall
In Chatham, Michigan, in December, it is raining for 7 days, with typically 1.57" (40mm) of accumulated precipitation. Throughout the year, in Chatham, there are 122.5 rainfall days, and 21.89" (556mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. December is the month with the most snowfall. Snow falls for 18.4 days and accumulates 6.14" (156mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 8:11 am and sunset at 5:02 pm. On the last day of December, sunrise is at 8:30 am and sunset at 5:11 pm EST.
Sunshine
In Chatham, the average sunshine in December is 2.2h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A typical high UV index of 1 in December suggests the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December in Chatham?
How many days does it rain in December?
When does it snow the most?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Chatham have in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Chatham, MI
- Average high temperature in December: 29.3°F
The warmest month (with the highest average high temperature) is August (69.1°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in December: 23°F
The month with the highest average low temperature is August (57.7°F).
The coldest month (with the lowest average low temperature) is February (16.2°F).
Average pressure in December
Chatham, MI
- Average pressure in December: 30.02"Hg
The month with the highest atmospheric pressure is March (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Chatham, MI
- Average wind speed in December: 12.4mph
The windiest month (with the highest average wind speed) is January (12.7mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in December
Chatham, 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 May (76%).
Average rainfall in December
Chatham, MI
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is October (2.56").
The driest month (with the least rainfall) is January (1.26").
Average rainfall days in December
Chatham, MI
- Average rainfall days in December: 7 days
The month with the highest number of rainy days is October (14.6 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in December
Chatham, MI
- Average snowfall in December: 6.14"
The month with the highest snowfall is December (6.14").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Chatham, MI
- Average snowfall days in December: 18.4 days
The month with the highest number of snowfall days is January (20.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Chatham, MI
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 2h 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: 1h and 48min).
Average sunshine days in December
Chatham, MI
- Average sunshine days in December: 6.9 days
The month with the most sunshine days is August (16.3 days).
The month with the least sunshine days is January (6.4 days).
Average UV index in December
Chatham, MI
- Average UV index in December: 1
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in December
Chatham, MI
- Average cloud cover in December: 76
The month with the most cloud cover is January (Cloud cover 82).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Chatham, 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).
Chatham, Michigan, USA
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