December weather forecastRomulus, MI
December
Weather in December
December, the first month of the winter in Romulus, is also an icy month, with an average temperature fluctuating between 27.1°F (-2.7°C) and 35.2°F (1.8°C).Temperature
December ushers in a slight temperature change, with average high-temperatures reducing from November's chilly 45.7°F (7.6°C) to a cold 35.2°F (1.8°C). A consistent nighttime average temperature of 27.1°F (-2.7°C) is maintained in Romulus during December.Humidity
The average relative humidity in December in Romulus, Michigan, is 81%.Rainfall
The month with the least rainfall in Romulus is December, when the rain falls for 7.9 days and typically collects 1.14" (29mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Romulus, in December, snow falls for 7.9 days, with typically accumulated 1.54" (39mm) of snow. Throughout the year, in Romulus, there are 40.4 snowfall days, and 12.24" (311mm) of snow is accumulated.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 7:43 am and sunset at 5:02 pm. On the last day of December, in Romulus, sunrise is at 8:02 am and sunset at 5:11 pm EST.
Sunshine
In Romulus, the average sunshine in December is 3.6h.UV index
December is the month with the lowest UV index in Romulus, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 1 during December translates into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Romulus, MI
- Average high temperature in December: 35.2°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in December: 27.1°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Romulus, MI
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Romulus, MI
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in December
Romulus, MI
- Average humidity in December: 81%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are April, July and October (75%).
Average rainfall in December
Romulus, MI
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is December (1.14").
Average rainfall days in December
Romulus, MI
- Average rainfall days in December: 7.9 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in December
Romulus, MI
- Average snowfall in December: 1.54"
The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Romulus, MI
- Average snowfall days in December: 7.9 days
The month with the highest number of snowfall days is January (11.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Romulus, 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 36min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in December
Romulus, MI
- Average sunshine days in December: 16.6 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in December
Romulus, MI
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Romulus, MI
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
Romulus, 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).
