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
As November transitions to December, the average high-temperature falls from a frosty 45.1°F (7.3°C) to a cold 34.3°F (1.3°C). Rochester's average temperature throughout the nights in December exhibits a minor decrease from daytime highs, stabilizing at a freezing cold 25.9°F (-3.4°C).Humidity
In December, the average relative humidity in Rochester, Michigan, is 82%.Rainfall
February and December are months with the least rain in Rochester when the rain falls for 8.8 days and typically aggregates up to 1.02" (26mm) of rain.Snowfall
Months with snowfall in Rochester are January through May, October through December. In Rochester, in December, during 13.9 snowfall days, 2.4" (61mm) of snow is typically accumulated. Throughout the year, there are 62.5 snowfall days, and 14.09" (358mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:43 am and sunset at 4:59 pm. On the last day of December, in Rochester, sunrise is at 8:02 am and sunset at 5:09 pm EST.
Sunshine
The average sunshine in December is 3.4h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in Rochester, Michigan. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: In December, a daily UV index of 1 turns into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
How cold is December in Rochester?
What is the average humidity in December in Rochester?
What is the driest month in Rochester?
How much does it rain in Rochester in December?
How much does it snow in Rochester in December?
What is the month with the shortest days in Rochester?
What is the average length of the day in December in Rochester?
When is the sunrise / sunset in December in Rochester?
How long on average sun shines in December in Rochester?
What is the month with the lowest UV index in Rochester?
How high is the UV index in December in Rochester?
Average temperature in December
Rochester, MI
- Average high temperature in December: 34.3°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in December: 25.9°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in December
Rochester, MI
- Average pressure in December: 30.07"Hg
The months with the highest atmospheric pressure are March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Rochester, MI
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in December
Rochester, MI
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April, May, July and August (75%).
Average rainfall in December
Rochester, MI
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is May (2.28").
The driest months (with the least rainfall) are February and December (1.02").
Average rainfall days in December
Rochester, MI
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (6.4 days).
Average snowfall in December
Rochester, MI
- Average snowfall in December: 2.4"
The month with the highest snowfall is February (4.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Rochester, MI
- Average snowfall days in December: 13.9 days
The month with the highest number of snowfall days is January (15.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rochester, MI
- Average daylight in December: 9h and 1min
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 2min
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
Rochester, MI
- Average sunshine days in December: 12.3 days
The month with the most sunshine days is November (14.9 days).
The month with the least sunshine days is February (9.8 days).
Average UV index in December
Rochester, MI
- Average UV index in December: 1
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Rochester, MI
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in December
Rochester, MI
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Rochester, Michigan, USA
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