December weather forecast
Saint Leon, IN

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Weather in December

December, the first month of the winter in Saint Leon, is also an icy month, with an average temperature fluctuating between 40.6°F (4.8°C) and 29.7°F (-1.3°C).

Temperature

Saint Leon's December weather shows a moderate shift in high-temperatures, falling from November's cool 50.9°F (10.5°C) to a cold 40.6°F (4.8°C). An average low-temperature of 29.7°F (-1.3°C) is observed during the December nights.

Humidity

December is the most humid month, with an average relative humidity of 82%.

Rainfall

In Saint Leon, during December, the rain falls for 10.5 days and regularly aggregates up to 1.69" (43mm) of precipitation. In Saint Leon, during the entire year, the rain falls for 149 days and collects up to 22.91" (582mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In December, it is snowing for 6.7 days. Throughout December, 1.54" (39mm) of snow is accumulated. In Saint Leon, during the entire year, snow falls for 29.7 days and aggregates up to 7.72" (196mm) of snow.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year in Saint Leon.
On the first day of December in Saint Leon, sunrise is at 7:41 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 7:59 am and sunset at 5:26 pm EST.

Sunshine

In Saint Leon, Indiana, the average sunshine in December is 4.2h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index in Saint Leon. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 1 in December transforms into the following instructions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Frequently asked questions

Is December cold in Saint Leon?

December temperatures in Saint Leon vary between a high-temperature of 40.6°F (4.8°C) and a low-temperature of 29.7°F (-1.3°C). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, is appraised at 89.6°F (32°C).

What is the most humid month in Saint Leon?

The most humid month in Saint Leon, Indiana, is December, with an average relative humidity of 82%.

What is the average humidity in December in Saint Leon?

The average relative humidity in December is 82%.

How much does it rain in Saint Leon in December?

In Saint Leon, during December, the rain falls for 10.5 days and regularly aggregates up to 1.69" (43mm) of precipitation.

How much does it snow in Saint Leon in December?

In December, in Saint Leon, it is snowing for 6.7 days. Throughout December, 1.54" (39mm) of snow is accumulated.

What is the month with the shortest days in Saint Leon?

The month with the shortest days in Saint Leon is December, with an average of 9h and 30min of daylight.

What is the average length of the day in December in Saint Leon?

In December, the average day length in Saint Leon, Indiana, is 9h and 28min.

When is the sunrise / sunset in December in Saint Leon?

In December, on the first day of the month, sunrise is at 7:41 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 7:59 am and sunset at 5:26 pm EST.

How long on average sun shines in December in Saint Leon?

In Saint Leon, Indiana, the average sunshine duration in December is 4.2h.

What is the month with the lowest UV index in Saint Leon?

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

How high is the UV index in December in Saint Leon?

The average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a low health threat 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
Saint Leon, IN

Average temperature in December - Saint Leon, IN
  • Average high temperature in December: 40.6°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in December: 29.7°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

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Average pressure in December
Saint Leon, IN

Average pressure in December - Saint Leon, IN
  • Average pressure in December: 30.13"Hg

The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in December
Saint Leon, IN

Average wind speed in December - Saint Leon, IN
  • Average wind speed in December: 8.3mph

The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in December
Saint Leon, IN

Average humidity in December - Saint Leon, IN
  • Average humidity in December: 82%

The month with the highest relative humidity is December (82%).
The months with the lowest relative humidity are September and October (75%).

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Average rainfall in December
Saint Leon, IN

Average rainfall in December - Saint Leon, IN
  • Average rainfall in December: 1.69"

The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is September (1.38").

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Average rainfall days in December
Saint Leon, IN

Average rainfall days in December - Saint Leon, IN
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is February (7.9 days).

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Average snowfall in December
Saint Leon, IN

Average snowfall in December - Saint Leon, IN
  • Average snowfall in December: 1.54"

The month with the highest snowfall is March (1.85").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Saint Leon, IN

Average snowfall days in December - Saint Leon, IN
  • Average snowfall days in December: 6.7 days

The month with the highest number of snowfall days is January (8.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Saint Leon, IN

Average daylight in December / Average sunshine in December - Saint Leon, IN
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 4h and 1min

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 6min).

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Average sunshine days in December
Saint Leon, IN

Average sunshine days in December - Saint Leon, IN
  • Average sunshine days in December: 15.5 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (10.7 days).

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Average UV index in December
Saint Leon, IN

Average UV index in December - Saint Leon, IN
  • Average UV index in December: 1

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

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Average cloud cover in December
Saint Leon, IN

Average cloud cover in December - Saint Leon, IN
  • Average cloud cover in December: 56

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in December
Saint Leon, IN

Average visibility in December - Saint Leon, IN
  • 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).

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Saint Leon, Indiana, USA

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