December weather forecastGrafton, ND
December
Weather in December
By December, Grafton firmly falls under winter's rule. Daylight hours decrease significantly, further amplifying the cold. Under the snowy blanket that reaches a depth of 3.94" (100mm), Grafton transforms into a winter wonderland. Amidst the wintry chill, twinkling Christmas lights and holiday celebrations add a unique charm to December's weather, beautifully closing off the year's weather cycle.Temperature
The arrival of December brings a significant change in Grafton's weather, with average high-temperatures dropping from November's cold 34.9°F (1.6°C) to a subzero cold 18.3°F (-7.6°C). Grafton's nighttime temperature in December falls to an average of 7.5°F (-13.6°C).Humidity
In Grafton, the average relative humidity in December is 89%.Rainfall
In Grafton, North Dakota, in December, during 2.5 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. In Grafton, during the entire year, the rain falls for 97.8 days and collects up to 15.83" (402mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. December is the month with the most snowfall in Grafton. Snow falls for 14 days and accumulates 3.94" (100mm) of snow.Daylight
With an average of 8h and 24min of daylight, December has the shortest days of the year in Grafton.On the first day of the month, sunrise is at 8:00 am and sunset at 4:37 pm. On the last day of December, sunrise is at 8:21 am and sunset at 4:44 pm CST.
Sunshine
The average sunshine in December in Grafton is 3.8h.UV index
In Grafton, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The average daily UV index of 2 in December transforms into the following instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grafton, ND
- Average high temperature in December: 18.3°F
The warmest month (with the highest average high temperature) is August (80.4°F).
The month with the lowest average high temperature is January (14.7°F).
- Average low temperature in December: 7.5°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (0.9°F).
Average pressure in December
Grafton, ND
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Grafton, ND
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is October (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).
Average humidity in December
Grafton, ND
- Average humidity in December: 89%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (59%).
Average rainfall in December
Grafton, ND
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is June (2.8").
The driest months (with the least rainfall) are January and February (0.55").
Average rainfall days in December
Grafton, ND
- Average rainfall days in December: 2.5 days
The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is February (1.6 days).
Average snowfall in December
Grafton, ND
- Average snowfall in December: 3.94"
The month with the highest snowfall is December (3.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Grafton, ND
- Average snowfall days in December: 14 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Grafton, ND
- Average daylight in December: 8h and 24min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 3h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in December
Grafton, ND
- Average sunshine days in December: 17 days
The month with the most sunshine days is August (19.8 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in December
Grafton, ND
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in December
Grafton, ND
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in December
Grafton, ND
- 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).
