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 arrival of December corresponds with a temperature reduction, down from November's chilly 48°F (8.9°C) to an icy 37.4°F (3°C). During December, the average low-temperature is recorded at a freezing cold 27.3°F (-2.6°C).Humidity
In December, the average relative humidity is 83%.Rainfall
In December, the rain falls for 5.6 days. Throughout December, 0.43" (11mm) of precipitation is accumulated. In De Graff, during the entire year, the rain falls for 82.2 days and collects up to 6.02" (153mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In De Graff, in December, snow falls for 4.4 days, with typically accumulated 0.43" (11mm) of snow. Throughout the year, there are 21.1 snowfall days, and 1.85" (47mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:39 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 5:19 pm EST.
Sunshine
In December, the average sunshine in De Graff is 3.9h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 1 during December translates into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Around midday, solar radiation is most harmful; hence, exposure should be limited. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much 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 De Graff have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
De Graff, OH
- Average high temperature in December: 37.4°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in December: 27.3°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in December
De Graff, OH
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
De Graff, OH
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in December
De Graff, OH
- Average humidity in December: 83%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
De Graff, OH
- Average rainfall in December: 0.43"
The wettest month (with the highest rainfall) is June (0.75").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in December
De Graff, OH
- Average rainfall days in December: 5.6 days
The month with the highest number of rainy days is May (10 days).
The month with the least rainy days is January (3.3 days).
Average snowfall in December
De Graff, OH
- Average snowfall in December: 0.43"
The month with the highest snowfall is February (0.47").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
De Graff, OH
- Average snowfall days in December: 4.4 days
The month with the highest number of snowfall days is January (5.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
De Graff, OH
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in December
De Graff, OH
- Average sunshine days in December: 23.2 days
The month with the most sunshine days is November (23.7 days).
The month with the least sunshine days is May (17.5 days).
Average UV index in December
De Graff, OH
- Average UV index in December: 1
The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
De Graff, OH
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
De Graff, OH
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are July, August and September (5mi).
De Graff, Ohio, USA
Weather forecast for your location
2. Allow the app to use your location