December weather forecastGrand Forks, ND
December
Weather in December
December showcases the return of winter weather in Grand Forks. A hallmark of the season here comes with the low temperature dipping to 7.5°F (-13.6°C). The daylight hours reduce significantly, leaving only 8.5 hours of illumination. The snowfall days register a sharp increase, confirming the onset of winter. The chilled winds and snowy landscapes mark the culmination of Grand Forks' climatological cycle.Temperature
The drop of average high-temperatures is noticeable in December in Grand Forks, with a decrease from an icy 35.6°F (2°C) in November to a subzero cold 18.7°F (-7.4°C). Grand Forks, in December, experiences an average temperature of 7.5°F (-13.6°C) at night.Humidity
In December, the average relative humidity is 89%.Rainfall
In Grand Forks, during December, the rain falls for 1.8 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Grand Forks, during the entire year, the rain falls for 80.3 days and collects up to 10.47" (266mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. December is the month with the most snowfall. Snow falls for 11.7 days and accumulates 2.8" (71mm) of snow.Daylight
The month with the shortest days in Grand Forks is December, with an average of 8h and 30min of daylight.On the first day of December in Grand Forks, sunrise is at 7:57 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 8:17 am and sunset at 4:45 pm CST.
Sunshine
In Grand Forks, the average sunshine in December is 3.3h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. 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 UV index of 1 in December translates into these instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grand Forks, ND
- Average high temperature in December: 18.7°F
The warmest month (with the highest average high temperature) is August (80.6°F).
The month with the lowest average high temperature is January (15.3°F).
- Average low temperature in December: 7.5°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (0.9°F).
Average pressure in December
Grand Forks, 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 (29.86"Hg).
Average wind speed in December
Grand Forks, 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 (8.2mph).
Average humidity in December
Grand Forks, ND
- Average humidity in December: 89%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is August (60%).
Average rainfall in December
Grand Forks, ND
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in December
Grand Forks, ND
- Average rainfall days in December: 1.8 days
The month with the highest number of rainy days is June (14.1 days).
The month with the least rainy days is January (0.8 days).
Average snowfall in December
Grand Forks, ND
- Average snowfall in December: 2.8"
The month with the highest snowfall is December (2.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Grand Forks, ND
- Average snowfall days in December: 11.7 days
The month with the highest number of snowfall days is December (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Grand Forks, ND
- Average daylight in December: 8h and 30min
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 30min).
- Average sunshine in December: 3h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Grand Forks, ND
- Average sunshine days in December: 19.6 days
The month with the most sunshine days is January (21.5 days).
The month with the least sunshine days is June (13.7 days).
Average UV index in December
Grand Forks, ND
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in December
Grand Forks, ND
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in December
Grand Forks, 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).
