December weather forecast and climate
Marion, OH

December, the first month of the winter, in Marion, is also a wintry month, with temperature in the range of an average low of 27.5°F (-2.5°C) and an average high of 37.6°F (3.1°C).

Temperature

In Marion, the average high-temperature in December decreases, from a chilly 47.8°F (8.8°C) in November, to a cold 37.6°F (3.1°C). The average low-temperature, is 27.5°F (-2.5°C).

Humidity

The average relative humidity in Marion is 83%.

Rainfall

In Marion, during 12 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. In Marion, during the entire year, the rain falls for 171.7 days and collects up to 31.3" (795mm) of precipitation.

Snowfall

Months with snowfall in Marion, Ohio, are January through May, October through December. In Marion, snow falls for 10.6 days, with typically accumulated 3.19" (81mm) of snow. In Marion, during the entire year, snow falls for 51.8 days, and aggregates up to 15.16" (385mm) of snow.

Daylight

The month with the shortest days in Marion is December, with an average of 9.3h of daylight.

Sunshine

In Marion, the average sunshine is 3.8h.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to the Sun's UV rays for the average person.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Marion?

In Marion, in December, the average high-temperature is 37.6°F (3.1°C), and the average low-temperature is 27.5°F (-2.5°C).

What is the average humidity in December in Marion?

The average relative humidity in December in Marion, Ohio, is 83%.

How much does it rain in Marion in December?

In December, the rain falls for 12 days. Throughout December, 2.17" (55mm) of precipitation is accumulated.

How many days does it snow in December in Marion?

In Marion, during December, snow falls for 10.6 days and regularly aggregates up to 3.19" (81mm) of snow.

What is the month with the shortest days in Marion?

The month with the shortest days is December, with an average of 9.3h of daylight.

What is the average length of the day in December in Marion?

In Marion, Ohio, the average length of the day in December is 9.3h.

How long on average sun shines in December in Marion?

In December, the average sunshine in Marion is 3.8h.

When is the lowest UV index in Marion?

The month with the lowest UV index in Marion is December, with an average maximum UV index of 1.

What is the UV index reading in December in Marion?

In December, the average daily maximum UV index is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from unprotected exposure to the UV radiation.
Average temperature in December - Marion, OH
  • Average high temperature in December: 3.1°C

The warmest month (with the highest average high temperature) is July (26.7°C).
The month with the lowest average high temperature is January (-0.4°C).

  • Average low temperature in December: -2.5°C

The month with the highest average low temperature is July (17.3°C).
The coldest month (with the lowest average low temperature) is January (-6.8°C).

Average pressure in December - Marion, OH
  • Average pressure in December: 1019.7mbar

The month with the highest atmospheric pressure is November (1020.2mbar).
The month with the lowest atmospheric pressure is June (1013.7mbar).

Average wind speed in December - Marion, OH
  • Average wind speed in December: 15.5km/h

The windiest month (with the highest average wind speed) is January (16.8km/h).
The calmest months (with the lowest average wind speed) are July and August (9.4km/h).

Average humidity in December - Marion, OH
  • Average humidity in December: 83%

Months with the highest relative humidity are January and February (84%).
Months with the lowest relative humidity are April, October and November (76%).

Average rainfall in December - Marion, OH
  • Average rainfall in December: 55mm

The wettest month (with the highest rainfall) is May (92mm).
The driest month (with the least rainfall) is September (49mm).

Average rainfall days in December - Marion, OH
  • Average rainfall days in December: 12 days

The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is January (8.8 days).

Average snowfall in December - Marion, OH
  • Average snowfall in December: 81mm

The month with the highest snowfall is February (101mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in December - Marion, OH
  • Average snowfall days in December: 10.6 days

The month with the highest number of snowfall days is January (14.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Marion, OH
  • Average daylight in December: 9.3h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 3.8h

The month with the most sunshine is July (Average sunshine: 10.1h).
The month with the least sunshine is January (Average sunshine: 3.3h).

Average sunshine days in December - Marion, OH
  • Average sunshine days in December: 12.1 days

The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is February (9.2 days).

Average UV index in December - Marion, OH
  • Average UV index in December: 1

Months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December - Marion, OH
  • Average cloud cover in December: 61

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in December - Marion, OH
  • Average visibility in December: 9km

Months with the highest visibility are March, April, May, June, July, October, November and December (9km).
Months with the lowest visibility are January, February, August and September (8km).