December weather forecast
Underwood, MN

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Weather in December

The first month of the winter, December, is also a subzero cold month in Underwood, Minnesota, with an average temperature varying between 21.9°F (-5.6°C) and 11.7°F (-11.3°C).

Temperature

A clear reduction in the average high-temperature is witnessed with the onset of December, reducing from an icy 37.6°F (3.1°C) in November to a freezing cold 21.9°F (-5.6°C). During December, Underwood's temperature falls to a steady low-temperature average of 11.7°F (-11.3°C).

Humidity

The average relative humidity in December is 88%.

Rainfall

In Underwood, during December, the rain falls for 2.9 days and regularly aggregates up to 1.02" (26mm) of precipitation. Throughout the year, there are 116.9 rainfall days, and 21.54" (547mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. The month with the most snowfall is December, when snow falls for 15.7 days and typically aggregates up to 5.04" (128mm) of snow.

Daylight

December has the shortest days of the year, with an average of 8h and 42min of daylight.
On the first day of the month, sunrise is at 7:46 am and sunset at 4:38 pm. On the last day of December, sunrise is at 8:06 am and sunset at 4:47 pm CST.

Sunshine

In Underwood, 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 estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 1 in December translates into this advice:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Opt for tightly woven and loose clothing to enhance protection from the Sun. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Updated: Jul 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

The high-temperature, in December, in Underwood, is 21.9°F (-5.6°C), while the low-temperature averages to 11.7°F (-11.3°C).

What is the average humidity in December?

The average relative humidity in December is 88%.

How much does it rain in December?

In Underwood, in December, it is raining for 2.9 days, with typically 1.02" (26mm) of accumulated precipitation.

What is the snowiest month?

The month with the most snowfall is December, when snow falls for 15.7 days and typically aggregates up to 5.04" (128mm) of snow.

How many days does it snow in December?

In Underwood, in December, snow falls for 15.7 days, with typically accumulated 5.04" (128mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 8h and 42min of daylight.

What is the average length of the day in December?

In December, the average day length is 8h and 41min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:46 am and sunset at 4:38 pm. On the last day of the month, in Underwood, sunrise is at 8:06 am and sunset at 4:47 pm CST.

How many hours of sunshine does Underwood have in December?

The average sunshine duration in December is 3.3h.

When is the lowest UV index?

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

What is the UV index reading in December?

In December, the average daily maximum UV index is 1. A UV Index estimate of 2, and below, represents a minimal hazard to health from 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
Underwood, MN

Average temperature in December - Underwood, MN
  • Average high temperature in December: 21.9°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (16.3°F).

  • Average low temperature in December: 11.7°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (3.7°F).

Average pressure in December
Underwood, MN

Average pressure in December - Underwood, MN
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in December
Underwood, MN

Average wind speed in December - Underwood, MN
  • Average wind speed in December: 9.9mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (8mph).

Average humidity in December
Underwood, MN

Average humidity in December - Underwood, MN
  • Average humidity in December: 88%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (66%).

Average rainfall in December
Underwood, MN

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

The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is January (0.67").

Average rainfall days in December
Underwood, MN

Average rainfall days in December - Underwood, MN
  • Average rainfall days in December: 2.9 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (2.1 days).

Average snowfall in December
Underwood, MN

Average snowfall in December - Underwood, MN
  • Average snowfall in December: 5.04"

The month with the highest snowfall is December (5.04").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Underwood, MN

Average snowfall days in December - Underwood, MN
  • 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
Underwood, MN

Average daylight in December / Average sunshine in December - Underwood, MN
  • Average daylight in December: 8h and 4min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in December: 3h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

Average sunshine days in December
Underwood, MN

Average sunshine days in December - Underwood, MN
  • Average sunshine days in December: 14.5 days

The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is June (9.3 days).

Average UV index in December
Underwood, MN

Average UV index in December - Underwood, MN
  • 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, November and December (UV index 1).

Average cloud cover in December
Underwood, MN

Average cloud cover in December - Underwood, MN
  • Average cloud cover in December: 65

The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 27).

Average visibility in December
Underwood, MN

Average visibility in December - Underwood, MN
  • 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).

Underwood, Minnesota, USA

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