December weather forecastPlymouth, MN
December
Weather in December
Plymouth, Minnesota enters its coldest period in December. As the year draws to an end, temperatures drop further, bringing chilly winds to an average of 8mph (12.9km/h). With 4.45" (113mm) of snowfall decorating the city in white, snow-related activities become prevalent. Despite being the coldest month, the holiday season fills the atmosphere with warmth and merriment. The weather, along with the festive spirit, paints Plymouth in a beautiful blend of cold, color, and celebration.Temperature
Plymouth's December weather is characterized by a distinct downswing in high-temperatures, falling from November's icy 40.1°F (4.5°C) to a subzero cold 25.3°F (-3.7°C). Plymouth observes an average low-temperature of 15.3°F (-9.3°C) during December nights.Humidity
The average relative humidity in December is 87%.Rainfall
In Plymouth, in December, during 3.4 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, there are 113.9 rainfall days, and 20.24" (514mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is December, when snow falls for 12.6 days and typically aggregates up to 4.45" (113mm) of snow.Daylight
December has the shortest days of the year in Plymouth, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:32 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:51 am and sunset at 4:42 pm CST.
Sunshine
In Plymouth, the average sunshine in December is 3.3h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the maximum UV index of 1 translates into these guidelines:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Plymouth, MN
- Average high temperature in December: 25.3°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (20.1°F).
- Average low temperature in December: 15.3°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).
Average pressure in December
Plymouth, MN
- Average pressure in December: 30.11"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Plymouth, MN
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in December
Plymouth, MN
- Average humidity in December: 87%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are April and May (70%).
Average rainfall in December
Plymouth, MN
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in December
Plymouth, MN
- Average rainfall days in December: 3.4 days
The month with the highest number of rainy days is June (16.3 days).
The month with the least rainy days is January (1.9 days).
Average snowfall in December
Plymouth, MN
- Average snowfall in December: 4.45"
The month with the highest snowfall is December (4.45").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Plymouth, MN
- Average snowfall days in December: 12.6 days
The month with the highest number of snowfall days is January (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
Plymouth, MN
- Average daylight in December: 8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 3h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Plymouth, MN
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in December
Plymouth, MN
- Average UV index in December: 1
The months with the highest UV index are June and 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
Plymouth, MN
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in December
Plymouth, MN
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
