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
Transition into December marks a drop in the average high-temperature, moving from a frosty 43.5°F (6.4°C) in November to an icy 33.6°F (0.9°C). Pentwater, during December nights, experiences a subtle shift to a low average of 27.5°F (-2.5°C) from the day's heat.Humidity
In Pentwater, Michigan, the average relative humidity in December is 83%.Rainfall
In Pentwater, in December, during 7.1 rainfall days, 1.69" (43mm) of precipitation is typically accumulated. In Pentwater, Michigan, during the entire year, the rain falls for 140.3 days and collects up to 25.08" (637mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 16 days. Throughout December, 4.09" (104mm) of snow is accumulated. In Pentwater, during the entire year, snow falls for 68.4 days and aggregates up to 18.07" (459mm) of snow.Daylight
December has the shortest days of the year in Pentwater, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 8:00 am and sunset at 5:09 pm. On the last day of December, sunrise is at 8:19 am and sunset at 5:18 pm EST.
Sunshine
In December, the average sunshine is 2.7h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In December, the maximum UV index of 1 suggests these recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Pentwater?
What is the average humidity in December in Pentwater?
How much does it rain in Pentwater in December?
How many days does it snow in December in Pentwater?
What is the month with the shortest days in Pentwater?
What is the average length of the day in December in Pentwater?
When is the sunrise / sunset in December in Pentwater?
How many hours of sunshine does Pentwater have in December?
What is the month with the lowest UV index in Pentwater?
What is the UV index reading in December in Pentwater?
Average temperature in December
Pentwater, MI
- Average high temperature in December: 33.6°F
The warmest month (with the highest average high temperature) is August (73.6°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is August (63.9°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Pentwater, 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
Pentwater, MI
- Average wind speed in December: 12.7mph
The windiest month (with the highest average wind speed) is November (13.1mph).
The calmest month (with the lowest average wind speed) is July (8.4mph).
Average humidity in December
Pentwater, MI
- Average humidity in December: 83%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall in December
Pentwater, MI
- Average rainfall in December: 1.69"
The wettest month (with the highest rainfall) is October (3.46").
The driest month (with the least rainfall) is February (1.34").
Average rainfall days in December
Pentwater, MI
- Average rainfall days in December: 7.1 days
The month with the highest number of rainy days is October (17.5 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in December
Pentwater, MI
- Average snowfall in December: 4.09"
The month with the highest snowfall is January (5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Pentwater, MI
- Average snowfall days in December: 16 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Pentwater, MI
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 2h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 6min).
Average sunshine days in December
Pentwater, MI
- Average sunshine days in December: 9.2 days
The month with the most sunshine days is July (14.8 days).
The month with the least sunshine days is January (6.3 days).
Average UV index in December
Pentwater, MI
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Pentwater, MI
- Average cloud cover in December: 73
The month with the most cloud cover is January (Cloud cover 79).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in December
Pentwater, 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).
Pentwater, Michigan, USA
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