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
Onset of December comes with a temperature decline, the average high falling from a chilly 45.7°F (7.6°C) in November to a wintry 34.7°F (1.5°C). December nights anticipate an average temperature of 26.1°F (-3.3°C), a modest decline from the daytime.Humidity
The average relative humidity in December is 84%.Rainfall
The months with the least rainfall are January and December Rain falls for 7.2 days and accumulates 0.83" (21mm) of rain.Snowfall
Months with snowfall are January through May, October through December. In Three Rivers, in December, snow falls for 11.6 days, with typically accumulated 1.5" (38mm) of snow. In Three Rivers, during the entire year, snow falls for 54.6 days and aggregates up to 11.26" (286mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:51 am and sunset at 5:12 pm. On the last day of December, sunrise is at 8:10 am and sunset at 5:21 pm EST.
Sunshine
In Three Rivers, the average sunshine in December is 3.2h.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 minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The UV index of 1 during December leads to these advisories:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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 many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Three Rivers 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
Three Rivers, MI
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in December: 26.1°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
Three Rivers, MI
- Average pressure in December: 30.08"Hg
The months with the highest atmospheric pressure are January, March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Three Rivers, 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
Three Rivers, 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
Three Rivers, MI
- Average rainfall in December: 0.83"
The wettest month (with the highest rainfall) is June (2.28").
The driest months (with the least rainfall) are January and December (0.83").
Average rainfall days in December
Three Rivers, MI
- Average rainfall days in December: 7.2 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in December
Three Rivers, MI
- Average snowfall in December: 1.5"
The month with the highest snowfall is January (3.19").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Three Rivers, MI
- Average snowfall days in December: 11.6 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Three Rivers, 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 1min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in December
Three Rivers, MI
- Average sunshine days in December: 14 days
The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is February (11 days).
Average UV index in December
Three Rivers, 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
Three Rivers, 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 33).
Average visibility in December
Three Rivers, MI
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Three Rivers, Michigan, USA
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