December weather forecast
Spirit Lake, IA

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Weather in December

The first month of the winter, December, is still a freezing cold month in Spirit Lake, Iowa, with an average temperature varying between 26.8°F (-2.9°C) and 16.2°F (-8.8°C).

Temperature

Spirit Lake experiences a noticeable temperature shift with the start of December, with average high-temperatures moving from a cold 42.3°F (5.7°C) in November to a subzero cold 26.8°F (-2.9°C). Throughout the nights in December, Spirit Lake experiences an average low-temperature of 16.2°F (-8.8°C).

Humidity

In Spirit Lake, the average relative humidity in December is 85%.

Rainfall

In Spirit Lake, during December, the rain falls for 3.6 days and regularly aggregates up to 1.34" (34mm) of precipitation. Throughout the year, there are 124.6 rainfall days, and 24.37" (619mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In December, it is snowing for 10.9 days. Throughout December, 3.66" (93mm) of snow is accumulated. In Spirit Lake, during the entire year, snow falls for 47.4 days and aggregates up to 21.93" (557mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 0min of daylight.
On the first day of December, sunrise is at 7:33 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 4:54 pm CST.

Sunshine

The average sunshine in December is 4.3h.

UV index

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. It's recommended to limit sun exposure when its radiation is at its peak during midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Updated: Jun 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

Spirit Lake in December has an average high-temperature of 26.8°F (-2.9°C) and an average low-temperature of 16.2°F (-8.8°C).

What is the average humidity in December?

In Spirit Lake, the average relative humidity in December is 85%.

How much does it rain in Spirit Lake in December?

In Spirit Lake, Iowa, during December, the rain falls for 3.6 days and regularly aggregates up to 1.34" (34mm) of precipitation.

How much does it snow in December?

In Spirit Lake, in December, during 10.9 snowfall days, 3.66" (93mm) of snow is typically accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 0min of daylight.

What is the average length of the day in December?

In Spirit Lake, the average day length in December is 9h and 1min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:33 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 4:54 pm CST.

How many hours of sunshine does Spirit Lake have in December?

In Spirit Lake, the average sunshine duration in December is 4.3h.

What is the UV index intensity in December?

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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
Spirit Lake, IA

Average temperature in December - Spirit Lake, IA
  • Average high temperature in December: 26.8°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 (22.5°F).

  • Average low temperature in December: 16.2°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 (9.3°F).

Average pressure in December
Spirit Lake, IA

Average pressure in December - Spirit Lake, IA
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in December
Spirit Lake, IA

Average wind speed in December - Spirit Lake, IA
  • Average wind speed in December: 10.9mph

The windiest months (with the highest average wind speed) are January, February and April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

Average humidity in December
Spirit Lake, IA

Average humidity in December - Spirit Lake, IA
  • Average humidity in December: 85%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (68%).

Average rainfall in December
Spirit Lake, IA

Average rainfall in December - Spirit Lake, IA
  • Average rainfall in December: 1.34"

The wettest month (with the highest rainfall) is June (3.9").
The driest month (with the least rainfall) is January (0.83").

Average rainfall days in December
Spirit Lake, IA

Average rainfall days in December - Spirit Lake, IA
  • Average rainfall days in December: 3.6 days

The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (2.1 days).

Average snowfall in December
Spirit Lake, IA

Average snowfall in December - Spirit Lake, IA
  • Average snowfall in December: 3.66"

The month with the highest snowfall is February (5.47").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Spirit Lake, IA

Average snowfall days in December - Spirit Lake, IA
  • Average snowfall days in December: 10.9 days

The month with the highest number of snowfall days is December (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Spirit Lake, IA

Average daylight in December / Average sunshine in December - Spirit Lake, IA
  • Average daylight in December: 9h and 0min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in December: 4h 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 54min).

Average sunshine days in December
Spirit Lake, IA

Average sunshine days in December - Spirit Lake, IA
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (8.6 days).

Average UV index in December
Spirit Lake, IA

Average UV index in December - Spirit Lake, IA
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).

Average cloud cover in December
Spirit Lake, IA

Average cloud cover in December - Spirit Lake, IA
  • Average cloud cover in December: 56

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in December
Spirit Lake, IA

Average visibility in December - Spirit Lake, IA
  • Average visibility in December: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Spirit Lake, Iowa, USA

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