Thief River Falls
Minnesota, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Thief River Falls, MN

December, the first month of the winter, in Thief River Falls, is still a freezing cold month, with average temperature fluctuating between 17.6°F (-8°C) and -0.4°F (-18°C).

Temperature

In December, the average high-temperature significantly decreases, from a cold 33.8°F (1°C) in November, to a subzero cold 17.6°F (-8°C). In Thief River Falls, in December, the average low-temperature is -0.4°F (-18°C).

Rainfall

In Thief River Falls, in December, during 7 rainfall days, 0.6" (15mm) of precipitation is typically accumulated. In Thief River Falls, Minnesota, during the entire year, the rain falls for 101 days and collects up to 20.6" (522mm) of precipitation.

Daylight

With an average of 8.4h of daylight, December has the shortest days of the year.

Sunshine

November and December, with an average of 3h of sunshine, are months with the least sunshine in Thief River Falls, Minnesota.

UV index

Months with the lowest UV index in Thief River Falls are January, February, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 1 in December transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in December in Thief River Falls?

In Thief River Falls, in December, the average high-temperature is 17.6°F (-8°C), and the average low-temperature is -0.4°F (-18°C).

How much does it rain in Thief River Falls in December?

In Thief River Falls, in December, it is raining for 7 days, with typically 0.6" (15mm) of accumulated precipitation.

What is the month with the shortest days in Thief River Falls?

December has the shortest days of the year in Thief River Falls, with an average of 8.4h of daylight.

How many hours of daylight does Thief River Falls have in December?

The average length of the day in December in Thief River Falls is 8.4h.

What is the month with the least sunshine in Thief River Falls?

Months with the least sunshine in Thief River Falls, Minnesota, are November and December, with an average of 3h of sunshine.

How many hours of sunshine does Thief River Falls have in December?

In December, the average sunshine in Thief River Falls is 3h.

What are the months with the lowest UV index in Thief River Falls?

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Thief River Falls, Minnesota.

What is the UV index intensity in December in Thief River Falls?

In Thief River Falls, the average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a low health threat from the exposure to the Sun's UV rays.
Average temperature in December - Thief River Falls, MN
  • Average high temperature in December: 18°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (12°F).

  • Average low temperature in December: 0°F

The month with the highest average low temperature is July (55°F).
The coldest month (with the lowest average low temperature) is January (-8°F).

Average rainfall in December - Thief River Falls, MN
  • Average rainfall in December: 0.6"

The wettest month (with the highest rainfall) is June (3.6").
The driest month (with the lowest rainfall) is February (0.4").

Average rainfall days in December - Thief River Falls, MN
  • Average rainfall days in December: 7 days

The month with the highest number of rainy days is June (11 days).
Months with the lowest number of rainy days are February and November (6 days).

Average daylight in December / Average sunshine in December - Thief River Falls, MN
  • Average daylight in December: 8.4h

The month with the longest days is June (Average daylight: 16h).
The month with shortest days is December (Average daylight: 8.4h).

  • Average sunshine in December: 3h

The month with most sunshine is July (Average sunshine: 11h).
Months with least sunshine are November and December (Average sunshine: 3).

Average UV index in December - Thief River Falls, MN
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 8).
Months with the lowest UV index are January, February, November and December (UV index 1).