December weather forecast
Pleasanton, IA

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Weather in December

December, the first month of the winter in Pleasanton, is also a wintry month, with an average temperature ranging between min 23.9°F (-4.5°C) and max 36°F (2.2°C).

Temperature

The arrival of December corresponds with a reduction in the average high-temperature, down from November's frosty 48.6°F (9.2°C) to a wintry 36°F (2.2°C). Pleasanton witnesses a consistent average low-temperature of 23.9°F (-4.5°C) throughout December.

Humidity

The average relative humidity in December is 78%.

Rainfall

The months with the least rainfall are January, February and December Rain falls for 5.4 days and accumulates 0.71" (18mm) of rain.

Snowfall

Months with snowfall are January through May, October through December. In Pleasanton, in December, snow falls for 5.4 days, with typically accumulated 1.18" (30mm) of snow. Throughout the year, there are 27.9 snowfall days, and 10.83" (275mm) of snow is accumulated.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:19 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 4:58 pm CST.

Sunshine

In December, the average sunshine is 4.9h.

UV index

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 2 in December translates into these instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

In December, the average high-temperature and low-temperature are 36°F (2.2°C) and 23.9°F (-4.5°C) respectively. In August, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is evaluated at 87.8°F (31°C).

What is the average humidity in December?

The average relative humidity in December is 78%.

What is the driest month?

The months with the least rainfall are January, February and December Rain falls for 5.4 days and accumulates 0.71" (18mm) of rain.

How many days does it rain in December?

In December, the rain falls for 5.4 days. Throughout December, 0.71" (18mm) of precipitation is accumulated.

How many days does it snow in December?

In Pleasanton, in December, snow falls for 5.4 days, with typically accumulated 1.18" (30mm) of snow.

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.

How many hours of daylight does Pleasanton have in December?

In Pleasanton, the average day length in December is 9h and 20min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:19 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 4:58 pm CST.

How long on average sun shines in December?

The average sunshine duration in December is 4.9h.

What is the month with the lowest UV index?

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index.

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 minimal hazard to health from exposure to the Sun's UV radiation.
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
Pleasanton, IA

Average temperature in December - Pleasanton, IA
  • Average high temperature in December: 36°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (30.7°F).

  • Average low temperature in December: 23.9°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).

Average pressure in December
Pleasanton, IA

Average pressure in December - Pleasanton, IA
  • Average pressure in December: 30.13"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
Pleasanton, IA

Average wind speed in December - Pleasanton, IA
  • Average wind speed in December: 9.8mph

The windiest months (with the highest average wind speed) are January, February and March (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in December
Pleasanton, IA

Average humidity in December - Pleasanton, IA
  • Average humidity in December: 78%

The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (71%).

Average rainfall in December
Pleasanton, IA

Average rainfall in December - Pleasanton, IA
  • Average rainfall in December: 0.71"

The wettest month (with the highest rainfall) is June (3.43").
The driest months (with the least rainfall) are January, February and December (0.71").

Average rainfall days in December
Pleasanton, IA

Average rainfall days in December - Pleasanton, IA
  • Average rainfall days in December: 5.4 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (3.8 days).

Average snowfall in December
Pleasanton, IA

Average snowfall in December - Pleasanton, IA
  • Average snowfall in December: 1.18"

The month with the highest snowfall is January (2.95").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Pleasanton, IA

Average snowfall days in December - Pleasanton, IA
  • Average snowfall days in December: 5.4 days

The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Pleasanton, 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 18min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in December
Pleasanton, IA

Average sunshine days in December - Pleasanton, IA
  • Average sunshine days in December: 21.5 days

The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is May (11.4 days).

Average UV index in December
Pleasanton, IA

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).

Average cloud cover in December
Pleasanton, IA

Average cloud cover in December - Pleasanton, IA
  • Average cloud cover in December: 47

The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are July, August and September (Cloud cover 29).

Average visibility in December
Pleasanton, IA

Average visibility in December - Pleasanton, 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).

Pleasanton, Iowa, USA

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