December weather forecast
Rosstown, IN

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Weather in December

The first month of the winter, December, is also an icy month in Rosstown, Indiana, with an average temperature ranging between min 30.4°F (-0.9°C) and max 41.9°F (5.5°C).

Temperature

The beginning of December marks a decrease in the average high-temperature, transitioning from a fresh 51.4°F (10.8°C) in November to an icy 41.9°F (5.5°C). Throughout the month of December, Rosstown observes an average nighttime temperature of 30.4°F (-0.9°C).

Humidity

The most humid month is December, with an average relative humidity of 81%.

Rainfall

In Rosstown, in December, during 11.2 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. In Rosstown, during the entire year, the rain falls for 163.7 days and collects up to 33.11" (841mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Rosstown, in December, during 7.2 snowfall days, 1.81" (46mm) of snow is typically accumulated. In Rosstown, during the entire year, snow falls for 32.7 days and aggregates up to 9.69" (246mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 7:44 am and sunset at 5:21 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 5:31 pm EST.

Sunshine

January and December, with an average of 4.1h of sunshine, are months with the least sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Rosstown. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, an average UV index of 2 transforms into the following instructions:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.

Frequently asked questions

Is it cold during December?

In December, in Rosstown, the average high-temperature is 41.9°F (5.5°C), and the average low-temperature is 30.4°F (-0.9°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is estimated at 93.2°F (34°C).

What is the most humid month?

With an average relative humidity of 81%, December is the most humid month.

What is the average humidity in December?

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

How much does it rain in December?

In Rosstown, in December, it is raining for 11.2 days, with typically 2.44" (62mm) of accumulated precipitation.

How many days does it snow in December?

In Rosstown, during December, snow falls for 7.2 days and regularly aggregates up to 1.81" (46mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 30min of daylight.

What is the average length of the day in December?

In December, the average day length is 9h and 28min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:44 am and sunset at 5:21 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 5:31 pm EST.

What is the month with the least sunshine in Rosstown?

The months with the least sunshine are January and December, with an average of 4.1h of sunshine.

How many hours of sunshine does Rosstown have in December?

In Rosstown, the average sunshine duration in December is 4.1h.

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.

What is the UV index reading in December?

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability 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
Rosstown, IN

Average temperature in December - Rosstown, IN
  • Average high temperature in December: 41.9°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in December: 30.4°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in December
Rosstown, IN

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

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Rosstown, IN

Average wind speed in December - Rosstown, IN
  • Average wind speed in December: 7.6mph

The windiest months (with the highest average wind speed) are January and February (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

Average humidity in December
Rosstown, IN

Average humidity in December - Rosstown, IN
  • Average humidity in December: 81%

The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (74%).

Average rainfall in December
Rosstown, IN

Average rainfall in December - Rosstown, IN
  • Average rainfall in December: 2.44"

The wettest month (with the highest rainfall) is April (3.82").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days in December
Rosstown, IN

Average rainfall days in December - Rosstown, IN
  • Average rainfall days in December: 11.2 days

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is February (9.9 days).

Average snowfall in December
Rosstown, IN

Average snowfall in December - Rosstown, IN
  • Average snowfall in December: 1.81"

The month with the highest snowfall is February (2.72").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Rosstown, IN

Average snowfall days in December - Rosstown, IN
  • Average snowfall days in December: 7.2 days

The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Rosstown, 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 18min).
The months with the least sunshine are January and December (Average sunshine: 4h and 6min).

Average sunshine days in December
Rosstown, IN

Average sunshine days in December - Rosstown, IN
  • Average sunshine days in December: 13.5 days

The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is May (9.6 days).

Average UV index in December
Rosstown, IN

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

The months with the highest UV index are 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
Rosstown, IN

Average cloud cover in December - Rosstown, IN
  • Average cloud cover in December: 56

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in December
Rosstown, IN

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

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

Rosstown, Indiana, USA

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