December weather forecastGrand River, OH
December
Weather in December
The first month of the winter, December, is also an icy month in Grand River, Ohio, with an average temperature varying between 30.2°F (-1°C) and 37.9°F (3.3°C).Temperature
As November shifts into December, a minor alteration in temperatures is observed, with average highs reducing from a frosty 46.8°F (8.2°C) to a cold 37.9°F (3.3°C). The nights of December cool down to an average low of 30.2°F (-1°C), subtly lower than daytime highs.Humidity
The average relative humidity in December is 82%.Rainfall
In Grand River, during December, the rain falls for 11.4 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, there are 178.9 rainfall days, and 32.2" (818mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In December, it is snowing for 13.5 days. Throughout December, 3.98" (101mm) of snow is accumulated. Throughout the year, there are 64.4 snowfall days, and 19.92" (506mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:33 am and sunset at 4:55 pm. On the last day of December, in Grand River, sunrise is at 7:52 am and sunset at 5:04 pm EST.
Sunshine
The average sunshine in December is 3.1h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the average maximum UV index of 1 translates into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grand River, OH
- Average high temperature in December: 37.9°F
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in December: 30.2°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in December
Grand River, OH
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Grand River, OH
- Average wind speed in December: 11.6mph
The windiest month (with the highest average wind speed) is January (11.7mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in December
Grand River, OH
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are July and August (76%).
Average rainfall in December
Grand River, OH
- Average rainfall in December: 2.6"
The wettest month (with the highest rainfall) is June (3.23").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days in December
Grand River, OH
- Average rainfall days in December: 11.4 days
The month with the highest number of rainy days is October (18 days).
The month with the least rainy days is January (9 days).
Average snowfall in December
Grand River, OH
- Average snowfall in December: 3.98"
The month with the highest snowfall is February (5.31").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Grand River, OH
- Average snowfall days in December: 13.5 days
The month with the highest number of snowfall days is January (17.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Grand River, OH
- 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 6min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in December
Grand River, OH
- Average sunshine days in December: 7.7 days
The month with the most sunshine days is May (11.4 days).
The month with the least sunshine days is January (6.8 days).
Average UV index in December
Grand River, OH
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Grand River, OH
- Average cloud cover in December: 69
The month with the most cloud cover is January (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in December
Grand River, OH
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
