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 onset of December brings a clear temperature shift, with the average high-temperature decreasing from an icy 32.2°F (0.1°C) in November to a freezing cold 16.7°F (-8.5°C). Saint John records an average nighttime low-temperature of 5.9°F (-14.5°C) throughout December.Humidity
In Saint John, North Dakota, the average relative humidity in December is 91%.Rainfall
In Saint John, in December, during 2.7 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. Throughout the year, in Saint John, there are 110.9 rainfall days, and 17.95" (456mm) of precipitation is accumulated.Snowfall
Months with snowfall in Saint John, North Dakota, are January through May, October through December. In December, it is snowing for 15.7 days. Throughout December, 3.98" (101mm) of snow is accumulated. In Saint John, North Dakota, during the entire year, snow falls for 86.8 days and aggregates up to 23.78" (604mm) of snow.Daylight
With an average of 8h and 18min of daylight, December has the shortest days of the year in Saint John.On the first day of December in Saint John, sunrise is at 8:12 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 8:32 am and sunset at 4:51 pm CST.
Sunshine
In Saint John, the average sunshine in December is 3.2h.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index in Saint John. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is December in Saint John?
What is the average humidity in December in Saint John?
How much does it rain in Saint John in December?
How much does it snow in Saint John in December?
What is the month with the shortest days in Saint John?
How many hours of daylight does Saint John have in December?
What time are sunrise and sunset in December in Saint John?
How many hours of sunshine does Saint John have in December?
When is the lowest UV index in Saint John?
How high is the UV index in December in Saint John?
Average temperature in December
Saint John, ND
- Average high temperature in December: 16.7°F
The warmest month (with the highest average high temperature) is August (77.9°F).
The month with the lowest average high temperature is January (14.2°F).
- Average low temperature in December: 5.9°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (0.5°F).
Average pressure in December
Saint John, ND
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Saint John, ND
- Average wind speed in December: 10.2mph
The windiest month (with the highest average wind speed) is October (11mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in December
Saint John, ND
- Average humidity in December: 91%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (60%).
Average rainfall in December
Saint John, ND
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is June (3.27").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in December
Saint John, ND
- Average rainfall days in December: 2.7 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (2 days).
Average snowfall in December
Saint John, ND
- Average snowfall in December: 3.98"
The month with the highest snowfall is November (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Saint John, ND
- Average snowfall days in December: 15.7 days
The month with the highest number of snowfall days is December (15.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Saint John, ND
- Average daylight in December: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in December: 3h and 1min
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 6min).
Average sunshine days in December
Saint John, ND
- Average sunshine days in December: 15.6 days
The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is June (8.1 days).
Average UV index in December
Saint John, ND
- 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 and December (UV index 1).
Average cloud cover in December
Saint John, ND
- Average cloud cover in December: 67
The month with the most cloud cover is February (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in December
Saint John, 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).
Saint John, North Dakota, USA
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