December weather forecast
Grandville, MI

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Weather in December

The first month of the winter, December, is also an icy month in Grandville, Michigan, with an average temperature varying between 34°F (1.1°C) and 26.2°F (-3.2°C).

Temperature

The arrival of December indicates a decrease in the average high-temperature, moving from a frosty 45.3°F (7.4°C) in November to an icy 34°F (1.1°C). Grandville records a negligible downturn from daytime temperatures, averaging a low of 26.2°F (-3.2°C) in the month of December.

Humidity

In December, the average relative humidity in Grandville is 84%.

Rainfall

In Grandville, during December, the rain falls for 7.9 days and regularly aggregates up to 1.57" (40mm) of precipitation. In Grandville, during the entire year, the rain falls for 143.3 days and collects up to 24.06" (611mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Grandville, in December, during 15.1 snowfall days, 4.02" (102mm) of snow is typically accumulated. Throughout the year, there are 68.7 snowfall days, and 20.24" (514mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 6min of daylight.
On the first day of December, sunrise is at 7:54 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 8:13 am and sunset at 5:18 pm EST.

Sunshine

In Grandville, the average sunshine in December is 3h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In December, a regular UV index of 1 translates into these guidelines:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

In Grandville, in December, the average high-temperature is 34°F (1.1°C), and the average low-temperature is 26.2°F (-3.2°C).

What is the average humidity in December?

In Grandville, the average relative humidity in December is 84%.

How many days does it rain in December?

In December, the rain falls for 7.9 days. Throughout December, 1.57" (40mm) of precipitation is accumulated.

How much does it snow in Grandville in December?

In Grandville, in December, snow falls for 15.1 days, with typically accumulated 4.02" (102mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 6min of daylight.

What is the average length of the day in December?

In Grandville, the average day length in December is 9h and 5min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:54 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 8:13 am and sunset at 5:18 pm EST.

How long on average sun shines in December in Grandville?

In December, the average sunshine duration is 3h.

What is the month with the lowest UV index?

January and December, with an average maximum UV index of 1, are months with the lowest UV index.

What is the UV index intensity in December?

In Grandville, Michigan, the average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Grandville, MI

Average temperature in December - Grandville, MI
  • Average high temperature in December: 34°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in December: 26.2°F

The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in December
Grandville, MI

Average pressure in December - Grandville, MI
  • Average pressure in December: 30.07"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
Grandville, MI

Average wind speed in December - Grandville, MI
  • Average wind speed in December: 9.4mph

The windiest months (with the highest average wind speed) are February and April (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity in December
Grandville, MI

Average humidity in December - Grandville, MI
  • Average humidity in December: 84%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is April (75%).

Average rainfall in December
Grandville, MI

Average rainfall in December - Grandville, MI
  • Average rainfall in December: 1.57"

The wettest month (with the highest rainfall) is October (2.8").
The driest month (with the least rainfall) is November (1.42").

Average rainfall days in December
Grandville, MI

Average rainfall days in December - Grandville, MI
  • Average rainfall days in December: 7.9 days

The month with the highest number of rainy days is October (16.5 days).
The month with the least rainy days is February (4.7 days).

Average snowfall in December
Grandville, MI

Average snowfall in December - Grandville, MI
  • Average snowfall in December: 4.02"

The month with the highest snowfall is January (6.26").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Grandville, MI

Average snowfall days in December - Grandville, MI
  • Average snowfall days in December: 15.1 days

The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Grandville, MI

Average daylight in December / Average sunshine in December - Grandville, 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 0min

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 24min).

Average sunshine days in December
Grandville, MI

Average sunshine days in December - Grandville, MI
  • Average sunshine days in December: 10.8 days

The month with the most sunshine days is September (15.6 days).
The month with the least sunshine days is January (8.3 days).

Average UV index in December
Grandville, MI

Average UV index in December - Grandville, MI
  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in December
Grandville, MI

Average cloud cover in December - Grandville, MI
  • Average cloud cover in December: 69

The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in December
Grandville, MI

Average visibility in December - Grandville, MI
  • Average visibility in December: 5mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

Grandville, Michigan, USA

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