December weather forecast
Dayton, MN

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Weather in December

The first month of the winter, December, is also a subzero cold month in Dayton, Minnesota, with an average temperature ranging between min 14.9°F (-9.5°C) and max 24.1°F (-4.4°C).

Temperature

As Dayton transitions into December, the average high-temperature shows a marked reduction, decreasing from a cold 39.7°F (4.3°C) in November to a freezing cold 24.1°F (-4.4°C). In Dayton, an average low-temperature of 14.9°F (-9.5°C) is recorded during December nights.

Humidity

In December, the average relative humidity is 87%.

Rainfall

In Dayton, in December, it is raining for 4.4 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, there are 118.9 rainfall days, and 20.75" (527mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. December is the month with the most snowfall. Snow falls for 11.6 days and accumulates 4.61" (117mm) of snow.

Daylight

With an average of 8h and 48min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:33 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 4:41 pm CST.

Sunshine

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 exposure to the Sun's UV radiation for the ordinary person.
Note: An average maximum UV index of 1 in December leads to these recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

In December, in Dayton, the average high-temperature is 24.1°F (-4.4°C), and the average low-temperature is 14.9°F (-9.5°C).

What is the average humidity in December?

In Dayton, the average relative humidity in December is 87%.

How many days does it rain in December?

In Dayton, in December, during 4.4 rainfall days, 1.02" (26mm) of precipitation is typically accumulated.

What is the snowiest month?

December is the month with the most snowfall. Snow falls for 11.6 days and accumulates 4.61" (117mm) of snow.

How much does it snow in December?

In Dayton, during December, snow falls for 11.6 days and regularly aggregates up to 4.61" (117mm) of snow.

What is the month with the shortest days?

With an average of 8h and 48min of daylight, December has the shortest days of the year in Dayton.

How many hours of daylight does Dayton have in December?

In Dayton, the average day length in December is 8h and 49min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:33 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 4:41 pm CST.

How long on average sun shines in December?

In December, the average sunshine duration is 3.3h.

When is the lowest UV index?

The months with the lowest UV index in Dayton are January, February, November and December, with an average maximum UV index of 1.

What is the UV index reading in December?

In Dayton, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Dayton, MN

Average temperature in December - Dayton, MN
  • Average high temperature in December: 24.1°F

The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (19.2°F).

  • Average low temperature in December: 14.9°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (6.8°F).

Average pressure in December
Dayton, MN

Average pressure in December - Dayton, MN
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in December
Dayton, MN

Average wind speed in December - Dayton, MN
  • Average wind speed in December: 8.3mph

The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in December
Dayton, MN

Average humidity in December - Dayton, MN
  • Average humidity in December: 87%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (70%).

Average rainfall in December
Dayton, MN

Average rainfall in December - Dayton, MN
  • Average rainfall in December: 1.02"

The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is January (0.51").

Average rainfall days in December
Dayton, MN

Average rainfall days in December - Dayton, MN
  • Average rainfall days in December: 4.4 days

The month with the highest number of rainy days is June (16.2 days).
The month with the least rainy days is January (2.5 days).

Average snowfall in December
Dayton, MN

Average snowfall in December - Dayton, MN
  • Average snowfall in December: 4.61"

The month with the highest snowfall is December (4.61").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Dayton, MN

Average snowfall days in December - Dayton, MN
  • Average snowfall days in December: 11.6 days

The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Dayton, MN

Average daylight in December / Average sunshine in December - Dayton, MN
  • Average daylight in December: 8h and 5min

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 2min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

Average sunshine days in December
Dayton, MN

Average sunshine days in December - Dayton, MN
  • Average sunshine days in December: 17.9 days

The months with the most sunshine days are January and October (18.4 days).
The month with the least sunshine days is June (11.1 days).

Average UV index in December
Dayton, MN

Average UV index in December - Dayton, 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
Dayton, MN

Average cloud cover in December - Dayton, MN
  • Average cloud cover in December: 64

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in December
Dayton, MN

Average visibility in December - Dayton, 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).

Dayton, Minnesota, USA

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