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 onset of December introduces a moderate change in Keego Harbor's weather, with average high-temperatures falling from November's chilly 45°F (7.2°C) to a wintry 33.4°F (0.8°C). Keego Harbor registers a gentle descent to an average nighttime low of 25°F (-3.9°C) in December from its daytime highs.Humidity
In Keego Harbor, the average relative humidity in December is 84%.Rainfall
The month with the least rainfall is December, when the rain falls for 8.9 days and typically collects 1.3" (33mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Keego Harbor, during December, snow falls for 14.5 days and regularly aggregates up to 2.72" (69mm) of snow. Throughout the year, there are 64.7 snowfall days, and 19.13" (486mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:44 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 8:03 am and sunset at 5:10 pm EST.
Sunshine
The average sunshine in December 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 value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
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?
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 Keego Harbor have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Keego Harbor have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Keego Harbor, MI
- Average high temperature in December: 33.4°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in December: 25°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in December
Keego Harbor, 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
Keego Harbor, MI
- Average wind speed in December: 9.7mph
The windiest months (with the highest average wind speed) are January and February (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in December
Keego Harbor, 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 April (76%).
Average rainfall in December
Keego Harbor, MI
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is December (1.3").
Average rainfall days in December
Keego Harbor, MI
- Average rainfall days in December: 8.9 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in December
Keego Harbor, MI
- Average snowfall in December: 2.72"
The month with the highest snowfall is February (5.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Keego Harbor, MI
- Average snowfall days in December: 14.5 days
The month with the highest number of snowfall days is January (16.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Keego Harbor, 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 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
Keego Harbor, MI
- Average sunshine days in December: 11.5 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is January (9.5 days).
Average UV index in December
Keego Harbor, 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
Keego Harbor, MI
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Keego Harbor, 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).
Keego Harbor, Michigan, USA
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