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
With the onset of December, Riverdale's average high-temperature adjusts, receding from November's frosty 43.9°F (6.6°C) to a cold 32.9°F (0.5°C). Riverdale, during the December nights, maintains an average temperature of 23.9°F (-4.5°C), closely aligned with its daytime readings.Humidity
The average relative humidity in December in Riverdale is 85%.Rainfall
In December, the rain falls for 8 days. Throughout December, 1.38" (35mm) of precipitation is accumulated. Throughout the year, there are 141.3 rainfall days, and 22.48" (571mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Riverdale. In Riverdale, in December, snow falls for 14.5 days, with typically accumulated 3.62" (92mm) of snow. In Riverdale, Michigan, during the entire year, snow falls for 65.5 days and aggregates up to 19.65" (499mm) of snow.Daylight
The month with the shortest days in Riverdale is December, with an average of 9h and 0min of daylight.On the first day of December in Riverdale, Michigan, sunrise is at 7:52 am and sunset at 5:04 pm. On the last day of the month, sunrise is at 8:11 am and sunset at 5:13 pm EST.
Sunshine
The average sunshine in December is 3.2h.UV index
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Riverdale. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.Note: A maximum high daily UV index of 1 during December translates into the following directions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
How cold is it in Riverdale in December?
What is the average humidity in December in Riverdale?
How much does it rain in Riverdale in December?
How much does it snow in Riverdale in December?
What is the month with the shortest days in Riverdale?
What is the average length of the day in December in Riverdale?
When is the sunrise / sunset in December in Riverdale?
How many hours of sunshine does Riverdale have in December?
When is the lowest UV index in Riverdale?
What is the UV index intensity in December in Riverdale?
Average temperature in December
Riverdale, MI
- Average high temperature in December: 32.9°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in December: 23.9°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in December
Riverdale, 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 (29.92"Hg).
Average wind speed in December
Riverdale, MI
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in December
Riverdale, MI
- Average humidity in December: 85%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Riverdale, MI
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is February (1.26").
Average rainfall days in December
Riverdale, MI
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in December
Riverdale, MI
- Average snowfall in December: 3.62"
The month with the highest snowfall is January (5.91").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Riverdale, MI
- Average snowfall days in December: 14.5 days
The month with the highest number of snowfall days is January (18 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Riverdale, MI
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in December
Riverdale, MI
- Average sunshine days in December: 11.5 days
The month with the most sunshine days is September (15.8 days).
The month with the least sunshine days is January (10.3 days).
Average UV index in December
Riverdale, MI
- Average UV index in December: 1
The months with the highest UV index are May, June, 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
Riverdale, MI
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Riverdale, MI
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, October and November (6mi).
The months with the lowest visibility are January, February, September and December (5mi).
Riverdale, Michigan, USA
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