December weather forecast
Exline, IA

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Weather in December

December, the first month of the winter in Exline, is still a cold month, with an average temperature fluctuating between 23.9°F (-4.5°C) and 35.8°F (2.1°C).

Temperature

The beginning of December involves a decrease in the average high-temperature, transitioning from a chilly 48.4°F (9.1°C) in November to an icy 35.8°F (2.1°C). Throughout the nights in December, Exline experiences an average low-temperature of 23.9°F (-4.5°C).

Humidity

The average relative humidity in December is 79%.

Rainfall

In Exline, during December, the rain falls for 7 days and regularly aggregates up to 1.22" (31mm) of precipitation. Throughout the year, there are 143.2 rainfall days, and 27.48" (698mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Exline, in December, during 7.2 snowfall days, 1.57" (40mm) of snow is typically accumulated. Throughout the year, there are 33.2 snowfall days, and 15.31" (389mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:16 am and sunset at 4:44 pm. On the last day of December, in Exline, sunrise is at 7:35 am and sunset at 4:54 pm CST.

Sunshine

In December, the average sunshine is 4.8h.

UV index

In Exline, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, an average UV index of 2 transforms into the following instructions:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Boost your sun resistance with garments that are densely woven yet spacious. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Updated: Jul 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

The high-temperature during December is 35.8°F (2.1°C) and the low-temperature is 23.9°F (-4.5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is estimated at 87.8°F (31°C).

What is the average humidity in December?

In December, the average relative humidity is 79%.

How much does it rain in December?

In Exline, in December, during 7 rainfall days, 1.22" (31mm) of precipitation is typically accumulated.

How many days does it snow in December?

In Exline, in December, during 7.2 snowfall days, 1.57" (40mm) of snow is typically accumulated.

What is the month with the shortest days?

With an average of 9h and 18min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

In December, the average day length in Exline is 9h and 19min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:16 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:54 pm CST.

How long on average sun shines in December?

In December, the average sunshine duration is 4.8h.

What is the UV index intensity in December?

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health threat 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
Exline, IA

Average temperature in December - Exline, IA
  • Average high temperature in December: 35.8°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in December: 23.9°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).

Average pressure in December
Exline, IA

Average pressure in December - Exline, 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 (29.89"Hg).

Average wind speed in December
Exline, IA

Average wind speed in December - Exline, IA
  • Average wind speed in December: 10.1mph

The windiest months (with the highest average wind speed) are January, February and March (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

Average humidity in December
Exline, IA

Average humidity in December - Exline, IA
  • Average humidity in December: 79%

The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).

Average rainfall in December
Exline, IA

Average rainfall in December - Exline, IA
  • Average rainfall in December: 1.22"

The wettest month (with the highest rainfall) is June (3.98").
The driest month (with the least rainfall) is January (1.02").

Average rainfall days in December
Exline, IA

Average rainfall days in December - Exline, IA
  • Average rainfall days in December: 7 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (5 days).

Average snowfall in December
Exline, IA

Average snowfall in December - Exline, IA
  • Average snowfall in December: 1.57"

The month with the highest snowfall is January (4.33").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Exline, IA

Average snowfall days in December - Exline, IA
  • Average snowfall days in December: 7.2 days

The month with the highest number of snowfall days is January (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Exline, IA

Average daylight in December / Average sunshine in December - Exline, IA
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in December
Exline, IA

Average sunshine days in December - Exline, IA
  • Average sunshine days in December: 18.1 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is June (8.8 days).

Average UV index in December
Exline, IA

Average UV index in December - Exline, IA
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in December
Exline, IA

Average cloud cover in December - Exline, IA
  • Average cloud cover in December: 48

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July, August and September (Cloud cover 29).

Average visibility in December
Exline, IA

Average visibility in December - Exline, IA
  • Average visibility in December: 6mi

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

Exline, Iowa, USA

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