December weather forecast
Plato, IA

Share

Weather in December

The first month of the winter, December, is also a wintry month in Plato, Iowa, with an average temperature fluctuating between 33.8°F (1°C) and 23°F (-5°C).

Temperature

December weather is marked by a drop in the average high-temperature, falling from a frosty 46.2°F (7.9°C) in November to a cold 33.8°F (1°C). During December, Plato's temperature falls to a steady low-temperature average of 23°F (-5°C).

Humidity

In December, the average relative humidity in Plato is 81%.

Rainfall

In Plato, in December, it is raining for 6.5 days, with typically 1.42" (36mm) of accumulated precipitation. In Plato, during the entire year, the rain falls for 139.1 days and collects up to 29.57" (751mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Plato, in December, snow falls for 7.3 days, with typically accumulated 2.44" (62mm) of snow. In Plato, during the entire year, snow falls for 34.5 days and aggregates up to 16.85" (428mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 7:13 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:44 pm CST.

Sunshine

In Plato, the average sunshine in December is 4.5h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.
Note: An average maximum UV index of 1 in December leads to these recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Updated: Aug 19, 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, in December, in Plato, records 33.8°F (1°C), while the low-temperature is 23°F (-5°C). In July, the average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, is calculated to be 87.8°F (31°C).

What is the average humidity in December in Plato?

In Plato, the average relative humidity in December is 81%.

How much does it rain in December?

In December, the rain falls for 6.5 days. Throughout December, 1.42" (36mm) of precipitation is accumulated.

How much does it snow in December?

In Plato, during December, snow falls for 7.3 days and regularly aggregates up to 2.44" (62mm) of snow.

What is the month with the shortest days?

The month with the shortest days in Plato is December, with an average of 9h and 12min of daylight.

What is the average length of the day in December?

In Plato, the average day length in December is 9h and 13min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:13 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:44 pm CST.

How many hours of sunshine does Plato have in December?

In December, the average sunshine duration in Plato, Iowa, is 4.5h.

What is the month with the lowest UV index?

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

How high is the UV index in December?

In Plato, the average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents 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
Plato, IA

Average temperature in December - Plato, IA
  • Average high temperature in December: 33.8°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (27.3°F).

  • Average low temperature in December: 23°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).

Average pressure in December
Plato, IA

Average pressure in December - Plato, IA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in December
Plato, IA

Average wind speed in December - Plato, IA
  • Average wind speed in December: 9.9mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in December
Plato, IA

Average humidity in December - Plato, IA
  • Average humidity in December: 81%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

Average rainfall in December
Plato, IA

Average rainfall in December - Plato, IA
  • Average rainfall in December: 1.42"

The wettest month (with the highest rainfall) is May (4.61").
The driest month (with the least rainfall) is January (1.3").

Average rainfall days in December
Plato, IA

Average rainfall days in December - Plato, IA
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (4.4 days).

Average snowfall in December
Plato, IA

Average snowfall in December - Plato, IA
  • Average snowfall in December: 2.44"

The month with the highest snowfall is January (5.24").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Plato, IA

Average snowfall days in December - Plato, IA
  • Average snowfall days in December: 7.3 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
Plato, IA

Average daylight in December / Average sunshine in December - Plato, IA
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 4h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in December
Plato, IA

Average sunshine days in December - Plato, IA
  • Average sunshine days in December: 18.6 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is June (9.2 days).

Average UV index in December
Plato, IA

Average UV index in December - Plato, IA
  • Average UV index in December: 1

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

Average cloud cover in December
Plato, IA

Average cloud cover in December - Plato, IA
  • Average cloud cover in December: 53

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in December
Plato, IA

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

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

Plato, Iowa, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location