December weather forecast
Plato, IA

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Weather in December

December, the first month of the winter in Plato, is still a cold month, with temperature in the range of an average low of 23°F (-5°C) and an average high of 33.8°F (1°C).

Temperature

A decrease in the average high-temperature is observed during December, shifting from a frosty 46.2°F (7.9°C) in November to a wintry 33.8°F (1°C). During December, Plato records a consistent average nighttime temperature of 23°F (-5°C).

Humidity

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

Rainfall

In Plato, during December, the rain falls for 6.5 days and regularly aggregates up to 1.42" (36mm) of 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, during 7.3 snowfall days, 2.44" (62mm) of snow is typically accumulated. 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

The average sunshine in December in Plato is 4.5h.

UV index

The months with the lowest UV index in Plato are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: A daily high UV index of 1 in December leads to these guidelines:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold is December in Plato?

The average high-temperature, in December, in Plato, is 33.8°F (1°C), while the average low-temperature is 23°F (-5°C). In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 87.8°F (31°C).

What is the average humidity in December in Plato?

The average relative humidity in December in Plato, Iowa, is 81%.

How many days does it rain in December in Plato?

In Plato, during December, the rain falls for 6.5 days and regularly aggregates up to 1.42" (36mm) of precipitation.

How many days does it snow in December in Plato?

In December, in Plato, it is snowing for 7.3 days. Throughout December, 2.44" (62mm) of snow is accumulated.

What is the month with the shortest days in Plato?

December has the shortest days of the year in Plato, 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 are sunrise and sunset in December in Plato?

On the first day of December in Plato, Iowa, 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 long on average sun shines in December in Plato?

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

When is the lowest UV index in Plato?

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

What is the UV index intensity in December in Plato?

In Plato, Iowa, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to 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
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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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Plato, Iowa, USA

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