December weather forecastPortage, MI
December
Weather in December
December brings the full force of winter to Portage, Michigan, with average high temperatures dropping to 34.7°F (1.5°C). Counted among the coldest months, it blankets the city in white with an average of 3.15" (80mm) of snowfall. Despite the cold, December brings a festive spirit and offers a quintessential charm. As one of the most cloudy months, December also sees shorter daylight hours, at around 9.2 hours per day. It’s a month where frosty temperatures meld with holiday festivities, turning the city into a wintry haven.Temperature
December is characterized by a reduction in the average high-temperature, from a frosty 45.7°F (7.6°C) in November to an icy 34.7°F (1.5°C). Night temperatures in December exhibit a subtle decrease, settling at an average of 26.1°F (-3.3°C).Humidity
In December, the average relative humidity is 84%.Rainfall
In Portage, Michigan, during December, the rain falls for 9 days and regularly aggregates up to 1.81" (46mm) of precipitation. Throughout the year, there are 158.4 rainfall days, and 29.88" (759mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, in Portage, Michigan, it is snowing for 13 days. Throughout December, 3.15" (80mm) of snow is accumulated. In Portage, during the entire year, snow falls for 62.4 days and aggregates up to 20.24" (514mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:52 am and sunset at 5:11 pm. On the last day of December, sunrise is at 8:10 am and sunset at 5:20 pm EST.
Sunshine
In December, the average sunshine is 3.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Portage, MI
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in December: 26.1°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
Portage, MI
- Average pressure in December: 30.08"Hg
The months with the highest atmospheric pressure are January, March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Portage, MI
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).
Average humidity in December
Portage, MI
- Average humidity in December: 84%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in December
Portage, MI
- Average rainfall in December: 1.81"
The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is November (1.73").
Average rainfall days in December
Portage, MI
- Average rainfall days in December: 9 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in December
Portage, MI
- Average snowfall in December: 3.15"
The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Portage, MI
- Average snowfall days in December: 13 days
The month with the highest number of snowfall days is January (16.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Portage, MI
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 3h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in December
Portage, MI
- Average sunshine days in December: 11.6 days
The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is February (9.8 days).
Average UV index in December
Portage, MI
- Average UV index in December: 1
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Portage, MI
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Portage, MI
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, October and November (6mi).
The months with the lowest visibility are January, February, August, September and December (5mi).
