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
The start of December involves a temperature drop, moving from a frosty 44.4°F (6.9°C) in November to an icy 33.3°F (0.7°C). Saint Charles observes a slightly reduced average nighttime temperature of 24.8°F (-4°C) during December.Humidity
In Saint Charles, the average relative humidity in December is 84%.Rainfall
In Saint Charles, in December, it is raining for 6.5 days, with typically 0.79" (20mm) of accumulated precipitation. Throughout the year, in Saint Charles, there are 126.4 rainfall days, and 15.79" (401mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In December, in Saint Charles, it is snowing for 9.2 days. Throughout December, 1.69" (43mm) of snow is accumulated. In Saint Charles, during the entire year, snow falls for 47.8 days and aggregates up to 11.06" (281mm) of snow.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:49 am and sunset at 5:02 pm. On the last day of December, in Saint Charles, sunrise is at 8:08 am and sunset at 5:11 pm EST.
Sunshine
In December, the average sunshine in Saint Charles, Michigan, is 3.3h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 1 in December suggests the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Saint Charles?
What is the average humidity in December in Saint Charles?
How much does it rain in Saint Charles in December?
How much does it snow in Saint Charles in December?
What is the month with the shortest days in Saint Charles?
What is the average length of the day in December in Saint Charles?
When are sunrise and sunset in December in Saint Charles?
How long on average sun shines in December in Saint Charles?
What is the month with the lowest UV index in Saint Charles?
What is the UV index reading in December in Saint Charles?
Average temperature in December
Saint Charles, MI
- Average high temperature in December: 33.3°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in December: 24.8°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure in December
Saint Charles, 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 (29.92"Hg).
Average wind speed in December
Saint Charles, MI
- Average wind speed in December: 9.5mph
The windiest months (with the highest average wind speed) are February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in December
Saint Charles, MI
- Average humidity in December: 84%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Saint Charles, MI
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days in December
Saint Charles, MI
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in December
Saint Charles, MI
- Average snowfall in December: 1.69"
The month with the highest snowfall is January (3.19").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Saint Charles, MI
- Average snowfall days in December: 9.2 days
The month with the highest number of snowfall days is February (11.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Saint Charles, MI
- Average daylight in December: 9h and 0min
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 0min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in December
Saint Charles, MI
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in December
Saint Charles, 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
Saint Charles, MI
- Average cloud cover in December: 66
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Saint Charles, 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).
Saint Charles, Michigan, USA
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