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
The shift from November to December corresponds with a decrease in the average high-temperature, down to a freezing cold 31.3°F (-0.4°C) from an icy 41.9°F (5.5°C). Grawn maintains a minor drop in temperature during December nights, with averages of 25.2°F (-3.8°C).Humidity
The average relative humidity in December is 84%.Rainfall
In Grawn, in December, it is raining for 4.3 days, with typically 0.67" (17mm) of accumulated precipitation. Throughout the year, in Grawn, Michigan, there are 94.8 rainfall days, and 8.35" (212mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 12 days. Throughout December, 2.01" (51mm) of snow is accumulated. Throughout the year, there are 62.8 snowfall days, and 10.67" (271mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 8:00 am and sunset at 5:03 pm. On the last day of December, sunrise is at 8:19 am and sunset at 5:12 pm EST.
Sunshine
In December, the average sunshine in Grawn is 2.3h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the average person.Note: A maximum high UV index of 1 in December translates into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Grawn have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Grawn, MI
- Average high temperature in December: 31.3°F
The warmest month (with the highest average high temperature) is August (73.6°F).
The month with the lowest average high temperature is January (25.7°F).
- Average low temperature in December: 25.2°F
The month with the highest average low temperature is August (59.5°F).
The coldest months (with the lowest average low temperature) are January and February (18.1°F).
Average pressure in December
Grawn, MI
- Average pressure in December: 30.04"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
Grawn, MI
- Average wind speed in December: 12mph
The windiest months (with the highest average wind speed) are January and December (12mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity in December
Grawn, MI
- Average humidity in December: 84%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and May (77%).
Average rainfall in December
Grawn, MI
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is May (0.98").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in December
Grawn, MI
- Average rainfall days in December: 4.3 days
The month with the highest number of rainy days is May (11.5 days).
The month with the least rainy days is February (2.1 days).
Average snowfall in December
Grawn, MI
- Average snowfall in December: 2.01"
The months with the highest snowfall are January and November (2.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Grawn, MI
- Average snowfall days in December: 12 days
The month with the highest number of snowfall days is January (15.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Grawn, MI
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 2h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 1h and 48min).
Average sunshine days in December
Grawn, MI
- Average sunshine days in December: 16.4 days
The month with the most sunshine days is March (18.8 days).
The month with the least sunshine days is February (14.6 days).
Average UV index in December
Grawn, MI
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in December
Grawn, MI
- Average cloud cover in December: 78
The month with the most cloud cover is January (Cloud cover 82).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in December
Grawn, 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).
Grawn, Michigan, USA
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