December weather forecastPort Huron, MI
December
Weather in December
December ushers in the winter season in Port Huron, with temperatures once again dipping to an average high of 34.7°F (1.5°C). The month sees the return of snowfall, marking it at 1.93" (49mm), setting the stage for a white Christmas. This period concludes the calendar year, encapsulating the city in a winter wonderland. As the city embraces the festive spirit, cold weather spells and shorter daylight hours lay a foundation for the frigid January weather that follows next year.Temperature
The commencement of December indicates a shift in the average high-temperature, receding from November's chilly 45.3°F (7.4°C) to a cold 34.7°F (1.5°C). Maintaining close parity with daytime warmth, the average nocturnal temperature during December stays at a subzero cold 26.6°F (-3°C).Humidity
The average relative humidity in December is 82%.Rainfall
In Port Huron, in December, it is raining for 9.2 days, with typically 1.14" (29mm) of accumulated precipitation. In Port Huron, during the entire year, the rain falls for 140.4 days and collects up to 19.41" (493mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Port Huron, in December, snow falls for 12.1 days, with typically accumulated 1.93" (49mm) of snow. In Port Huron, during the entire year, snow falls for 55.2 days and aggregates up to 12.28" (312mm) of snow.Ocean temperature
In Port Huron, in December, the average water temperature is 40.6°F (4.8°C).Note: In swimming, this scenario poses immediate life-threatening danger. Breathing control is totally lost and logical thinking nearly impossible. Wearing a specialized swimsuit is critical to limit thermal loss.
Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:41 am and sunset at 4:56 pm. On the last day of December, sunrise is at 8:00 am and sunset at 5:05 pm EST.
Sunshine
In December, the average sunshine 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 exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 1 in December translates into this advice:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. It's recommended to limit sun exposure when its radiation is at its peak during midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Port Huron, MI
- Average high temperature in December: 34.7°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 (27.9°F).
- Average low temperature in December: 26.6°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in December
Port Huron, 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 (29.93"Hg).
Average wind speed in December
Port Huron, MI
- Average wind speed in December: 10.9mph
The windiest month (with the highest average wind speed) is January (11.3mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in December
Port Huron, MI
- Average humidity in December: 82%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in December
Port Huron, MI
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is February (1.1").
Average rainfall days in December
Port Huron, MI
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in December
Port Huron, MI
- Average snowfall in December: 1.93"
The month with the highest snowfall is February (3.9").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Port Huron, MI
- Average snowfall days in December: 12.1 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Port Huron, MI
- Average sea temperature in December: 40.6°F
The best month for swimming (with the highest average sea temperature) is August (73.7°F).
The coldest month (with the lowest average sea temperature) is February (32.4°F).
Average daylight in December /
Average sunshine in December
Port Huron, MI
- Average daylight in December: 9h and 6min
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 12min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Port Huron, MI
- Average sunshine days in December: 12.5 days
The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is February (11.3 days).
Average UV index in December
Port Huron, 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
Port Huron, 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 30).
Average visibility in December
Port Huron, MI
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
