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
With December's onset, the average high-temperature recedes from November's frosty 45.1°F (7.3°C) to a cold 34.3°F (1.3°C). Casco's nighttime temperatures in December display a slight drop from daytime highs, averaging to a subzero cold 26.2°F (-3.2°C).Humidity
In Casco, Michigan, the average relative humidity in December is 83%.Rainfall
December is the month with the least rainfall. Rain falls for 9.5 days and accumulates 1.22" (31mm) of precipitation.Snowfall
Months with snowfall in Casco are January through May, October through December. In Casco, Michigan, in December, snow falls for 13.5 days, with typically accumulated 2.48" (63mm) of snow. In Casco, during the entire year, snow falls for 61.9 days and aggregates up to 15.24" (387mm) of snow.Daylight
The month with the shortest days in Casco, Michigan, is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:42 am and sunset at 4:57 pm. On the last day of December, in Casco, sunrise is at 8:01 am and sunset at 5:06 pm EST.
Sunshine
The average sunshine in December in Casco is 3.5h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Casco. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 1 during December morphs into the following directions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Casco in December?
What is the average humidity in December in Casco?
What is the driest month in Casco?
How many days does it rain in December in Casco?
How much does it snow in Casco in December?
What is the month with the shortest days in Casco?
What is the average length of the day in December in Casco?
When are sunrise and sunset in December in Casco?
How many hours of sunshine does Casco have in December?
What are the months with the lowest UV index in Casco?
What is the UV index reading in December in Casco?
Average temperature in December
Casco, MI
- Average high temperature in December: 34.3°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in December: 26.2°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in December
Casco, 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
Casco, MI
- Average wind speed in December: 10.2mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in December
Casco, 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 April (76%).
Average rainfall in December
Casco, MI
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is December (1.22").
Average rainfall days in December
Casco, MI
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in December
Casco, MI
- Average snowfall in December: 2.48"
The month with the highest snowfall is February (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Casco, MI
- Average snowfall days in December: 13.5 days
The month with the highest number of snowfall days is January (15.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Casco, 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 3min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in December
Casco, MI
- Average sunshine days in December: 11.8 days
The month with the most sunshine days is November (14.2 days).
The month with the least sunshine days is February (9.5 days).
Average UV index in December
Casco, MI
- Average UV index in December: 1
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Casco, MI
- Average cloud cover in December: 63
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
Casco, 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).
Casco, Michigan, USA
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