December weather forecastOntonagon, MI
December
Weather in December
December, the first month of the winter in Ontonagon, is still a freezing cold month, with an average temperature ranging between min 21°F (-6.1°C) and max 27.5°F (-2.5°C).Temperature
Stepping into December, Ontonagon observes a temperature decline, with the average high falling from November's wintry 37.8°F (3.2°C) to a subzero cold 27.5°F (-2.5°C). Ontonagon indicates a consistently low-temperature of 21°F (-6.1°C) during the nights of December.Humidity
In Ontonagon, Michigan, the average relative humidity in December is 85%.Rainfall
In Ontonagon, Michigan, in December, it is raining for 6.1 days, with typically 1.81" (46mm) of accumulated precipitation. Throughout the year, there are 122.6 rainfall days, and 22.56" (573mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall in Ontonagon is December, when snow falls for 20.5 days and typically aggregates up to 6.65" (169mm) of snow.Daylight
December has the shortest days of the year in Ontonagon, with an average of 8h and 36min of daylight.On the first day of December, sunrise is at 8:22 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 8:42 am and sunset at 5:18 pm EST.
Sunshine
In December, the average sunshine is 2h.UV index
January, November 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 minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Ontonagon, MI
- Average high temperature in December: 27.5°F
The warmest month (with the highest average high temperature) is August (69.4°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in December: 21°F
The month with the highest average low temperature is August (58.1°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in December
Ontonagon, MI
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Ontonagon, MI
- Average wind speed in December: 12.5mph
The windiest month (with the highest average wind speed) is January (12.6mph).
The calmest month (with the lowest average wind speed) is June (7.6mph).
Average humidity in December
Ontonagon, MI
- Average humidity in December: 85%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (75%).
Average rainfall in December
Ontonagon, MI
- Average rainfall in December: 1.81"
The wettest months (with the highest rainfall) are April, June, August and October (2.28").
The driest month (with the least rainfall) is February (1.22").
Average rainfall days in December
Ontonagon, MI
- Average rainfall days in December: 6.1 days
The month with the highest number of rainy days is October (14.6 days).
The month with the least rainy days is February (2.5 days).
Average snowfall in December
Ontonagon, MI
- Average snowfall in December: 6.65"
The month with the highest snowfall is December (6.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Ontonagon, MI
- Average snowfall days in December: 20.5 days
The month with the highest number of snowfall days is January (22.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Ontonagon, MI
- Average daylight in December: 8h and 36min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in December: 2h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 1h and 36min).
Average sunshine days in December
Ontonagon, MI
- Average sunshine days in December: 6.5 days
The month with the most sunshine days is July (15.5 days).
The month with the least sunshine days is January (5.6 days).
Average UV index in December
Ontonagon, MI
- Average UV index in December: 1
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Ontonagon, MI
- Average cloud cover in December: 80
The month with the most cloud cover is January (Cloud cover 84).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in December
Ontonagon, MI
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, November and December (5mi).
