December weather forecast
Sulphur, IN

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Weather in December

The first month of the winter, December, is also a frosty month in Sulphur, Indiana, with temperature in the range of an average high of 43.9°F (6.6°C) and an average low of 31.8°F (-0.1°C).

Temperature

The transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a fresh 52.9°F (11.6°C) in November to a frosty 43.9°F (6.6°C). In December, Sulphur encounters an average low-temperature of 31.8°F (-0.1°C) during the night.

Humidity

February and December, with an average relative humidity of 80%, are the most humid months.

Rainfall

In Sulphur, in December, during 11.3 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. In Sulphur, Indiana, during the entire year, the rain falls for 160 days and collects up to 29.45" (748mm) of precipitation.

Snowfall

Months with snowfall in Sulphur are January through April, September through December. In Sulphur, during December, snow falls for 5.5 days and regularly aggregates up to 1.14" (29mm) of snow. In Sulphur, during the entire year, snow falls for 26.8 days and aggregates up to 7.91" (201mm) of snow.

Daylight

With an average of 9h and 36min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:44 am and sunset at 5:26 pm. On the last day of December, sunrise is at 8:02 am and sunset at 5:36 pm EST.

Sunshine

December has the least sunshine of the year, with an average of 4.4h of sunshine.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 2 suggests this advice:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

How cold is it in December?

The average high-temperature, in December, in Sulphur, is 43.9°F (6.6°C), while the average low-temperature is 31.8°F (-0.1°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 96.8°F (36°C).

What are the most humid months in Sulphur?

February and December, with an average relative humidity of 80%, are most humid months in Sulphur.

What is the average humidity in December?

In December, the average relative humidity is 80%.

How much does it rain in December?

In December, the rain falls for 11.3 days. Throughout December, 2.2" (56mm) of precipitation is accumulated.

How much does it snow in December?

In Sulphur, during December, snow falls for 5.5 days and regularly aggregates up to 1.14" (29mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 36min of daylight.

How many hours of daylight does Sulphur have in December?

In Sulphur, the average day length in December is 9h and 34min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:44 am and sunset at 5:26 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 5:36 pm EST.

What is the month with the least sunshine?

December has the least sunshine of the year, with an average of 4.4h of sunshine.

How many hours of sunshine does Sulphur have in December?

In December, the average sunshine duration is 4.4h.

What is the month with the lowest UV index?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Sulphur, Indiana.

How high is the UV index in December?

In December, the average daily maximum UV index in Sulphur is 2. 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
Sulphur, IN

Average temperature in December - Sulphur, IN
  • Average high temperature in December: 43.9°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in December: 31.8°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

Average pressure in December
Sulphur, IN

Average pressure in December - Sulphur, IN
  • 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 (29.95"Hg).

Average wind speed in December
Sulphur, IN

Average wind speed in December - Sulphur, IN
  • Average wind speed in December: 7.1mph

The windiest months (with the highest average wind speed) are January and February (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in December
Sulphur, IN

Average humidity in December - Sulphur, IN
  • Average humidity in December: 80%

The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is October (74%).

Average rainfall in December
Sulphur, IN

Average rainfall in December - Sulphur, IN
  • Average rainfall in December: 2.2"

The wettest month (with the highest rainfall) is April (3.31").
The driest month (with the least rainfall) is September (1.61").

Average rainfall days in December
Sulphur, IN

Average rainfall days in December - Sulphur, IN
  • Average rainfall days in December: 11.3 days

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is November (9.8 days).

Average snowfall in December
Sulphur, IN

Average snowfall in December - Sulphur, IN
  • Average snowfall in December: 1.14"

The month with the highest snowfall is January (2.24").
The months with the least snowfall are May, June, July and August (0").

Average snowfall days in December
Sulphur, IN

Average snowfall days in December - Sulphur, IN
  • Average snowfall days in December: 5.5 days

The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are May, June, July and August (0 days).

Average daylight in December /
Average sunshine in December
Sulphur, IN

Average daylight in December / Average sunshine in December - Sulphur, IN
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in December: 4h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 24min).

Average sunshine days in December
Sulphur, IN

Average sunshine days in December - Sulphur, IN
  • Average sunshine days in December: 15.2 days

The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is May (11.1 days).

Average UV index in December
Sulphur, IN

Average UV index in December - Sulphur, IN
  • Average UV index in December: 2

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

Average cloud cover in December
Sulphur, IN

Average cloud cover in December - Sulphur, IN
  • Average cloud cover in December: 55

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
Sulphur, IN

Average visibility in December - Sulphur, IN
  • Average visibility in December: 5mi

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

Sulphur, Indiana, USA

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