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
Riverdale experiences a clear temperature downturn in December, with average high-temperatures moving from an icy 37.2°F (2.9°C) in November to a subzero cold 21.7°F (-5.7°C). During December, Riverdale's temperature averages to a frigid cold 9.7°F (-12.4°C) at night.Humidity
In December, the average relative humidity in Riverdale is 87%.Rainfall
In Riverdale, during December, the rain falls for 3.5 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Riverdale, during the entire year, the rain falls for 95.9 days and collects up to 14.65" (372mm) of precipitation.Snowfall
Months with snowfall in Riverdale, North Dakota, are January through May, October through December. In December, in Riverdale, it is snowing for 13 days. Throughout December, 3.19" (81mm) of snow is accumulated. Throughout the year, there are 68 snowfall days, and 18.19" (462mm) of snow is accumulated.Daylight
The month with the shortest days in Riverdale, North Dakota, is December, with an average of 8h and 30min of daylight.On the first day of December in Riverdale, sunrise is at 8:13 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 8:33 am and sunset at 5:04 pm CST.
Sunshine
The months with the least sunshine are January and December, with an average of 3.7h of sunshine.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 1 during December leads to these instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
How cold is it in Riverdale in December?
What is the average humidity in December in Riverdale?
How many days does it rain in December in Riverdale?
How many days does it snow in December in Riverdale?
What is the month with the shortest days in Riverdale?
What is the average length of the day in December in Riverdale?
When are sunrise and sunset in December in Riverdale?
What are the months with the least sunshine in Riverdale?
How long on average sun shines in December in Riverdale?
When is the lowest UV index in Riverdale?
What is the UV index intensity in December in Riverdale?
Average temperature in December
Riverdale, ND
- Average high temperature in December: 21.7°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (19.6°F).
- Average low temperature in December: 9.7°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure in December
Riverdale, 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 (29.84"Hg).
Average wind speed in December
Riverdale, 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 (8.6mph).
Average humidity in December
Riverdale, ND
- Average humidity in December: 87%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (54%).
Average rainfall in December
Riverdale, ND
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is June (2.64").
The driest month (with the least rainfall) is February (0.39").
Average rainfall days in December
Riverdale, ND
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is June (13.9 days).
The month with the least rainy days is February (2.1 days).
Average snowfall in December
Riverdale, ND
- Average snowfall in December: 3.19"
The month with the highest snowfall is January (3.31").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Riverdale, ND
- Average snowfall days in December: 13 days
The month with the highest number of snowfall days is December (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Riverdale, ND
- Average daylight in December: 8h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).
Average sunshine days in December
Riverdale, ND
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is March (13.9 days).
Average UV index in December
Riverdale, 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 and December (UV index 1).
Average cloud cover in December
Riverdale, ND
- Average cloud cover in December: 61
The month with the most cloud cover is February (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 22).
Average visibility in December
Riverdale, 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).
Riverdale, North Dakota, USA
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