December weather forecastGlen Ullin, ND
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Glen Ullin, North Dakota, with an average temperature ranging between max 23.2°F (-4.9°C) and min 11.3°F (-11.5°C).Temperature
Glen Ullin's weather in December is characterized by a distinct drop in the average high-temperature, reducing from a wintry 38.7°F (3.7°C) in November to a freezing cold 23.2°F (-4.9°C). The low-temperature average for Glen Ullin during December stands at an extreme cold 11.3°F (-11.5°C).Humidity
The average relative humidity in December in Glen Ullin is 86%.Rainfall
In Glen Ullin, North Dakota, during December, the rain falls for 3.4 days and regularly aggregates up to 0.67" (17mm) of precipitation. In Glen Ullin, during the entire year, the rain falls for 100.8 days and collects up to 14.88" (378mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Glen Ullin. December is the month with the most snowfall. Snow falls for 13.6 days and accumulates 3.98" (101mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 36min of daylight.On the first day of December, sunrise is at 8:12 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 8:32 am and sunset at 5:09 pm CST.
Sunshine
January and December, with an average of 4h of sunshine, are months with the least sunshine.UV index
In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 2 in December translates into these instructions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Glen Ullin, ND
- Average high temperature in December: 23.2°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (21.2°F).
- Average low temperature in December: 11.3°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 (7.2°F).
Average pressure in December
Glen Ullin, ND
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Glen Ullin, ND
- Average wind speed in December: 10mph
The windiest months (with the highest average wind speed) are April and October (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in December
Glen Ullin, ND
- Average humidity in December: 86%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (53%).
Average rainfall in December
Glen Ullin, ND
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is June (2.56").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days in December
Glen Ullin, ND
- Average rainfall days in December: 3.4 days
The month with the highest number of rainy days is June (15.4 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in December
Glen Ullin, ND
- Average snowfall in December: 3.98"
The month with the highest snowfall is December (3.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Glen Ullin, ND
- Average snowfall days in December: 13.6 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Glen Ullin, ND
- Average daylight in December: 8h and 36min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The months with the least sunshine are January and December (Average sunshine: 4h and 0min).
Average sunshine days in December
Glen Ullin, ND
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is September (20 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in December
Glen Ullin, ND
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Glen Ullin, ND
- Average cloud cover in December: 58
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 21).
Average visibility in December
Glen Ullin, 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).
