December weather forecast
Joppa, IN

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Weather in December

The first month of the winter, December, is also an icy month in Joppa, Indiana, with an average temperature varying between 39.6°F (4.2°C) and 28.2°F (-2.1°C).

Temperature

December brings a decrease in the average high-temperature, falling from November's chilly 49.5°F (9.7°C) to a cold 39.6°F (4.2°C). The nights of December anticipate an average low-temperature of 28.2°F (-2.1°C).

Humidity

The average relative humidity in December is 82%.

Rainfall

In Joppa, in December, during 11.3 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. In Joppa, during the entire year, the rain falls for 171.4 days and collects up to 36.1" (917mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Joppa, in December, snow falls for 7.6 days, with typically accumulated 3.11" (79mm) of snow. In Joppa, during the entire year, snow falls for 33.7 days and aggregates up to 12.48" (317mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:47 am and sunset at 5:22 pm. On the last day of December, sunrise is at 8:06 am and sunset at 5:31 pm EST.

Sunshine

In December, the average sunshine is 4.2h.

UV index

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: A daily high UV index of 2 in December leads to these guidelines:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.

Frequently asked questions

How cold does it get in December?

An average high-temperature, in December, in Joppa, is 39.6°F (4.2°C) and the average low-temperature is 28.2°F (-2.1°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is calculated to be 87.8°F (31°C).

What is the average humidity in December?

The average relative humidity in December is 82%.

How much does it rain in December?

In Joppa, during December, the rain falls for 11.3 days and regularly aggregates up to 2.76" (70mm) of precipitation.

How much does it snow in Joppa in December?

In Joppa, in December, snow falls for 7.6 days, with typically accumulated 3.11" (79mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 24min of daylight.

How many hours of daylight does Joppa have in December?

In Joppa, the average day length in December is 9h and 25min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:47 am and sunset at 5:22 pm. On the last day of the month, sunrise is at 8:06 am and sunset at 5:31 pm EST.

How many hours of sunshine does Joppa have in December?

In Joppa, the average sunshine duration in December is 4.2h.

What is the month with the lowest UV index?

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in December?

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk 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
Joppa, IN

Average temperature in December - Joppa, IN
  • Average high temperature in December: 39.6°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (34.2°F).

  • Average low temperature in December: 28.2°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 (21.2°F).

Average pressure in December
Joppa, IN

Average pressure in December - Joppa, IN
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
Joppa, IN

Average wind speed in December - Joppa, IN
  • Average wind speed in December: 8.9mph

The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity in December
Joppa, IN

Average humidity in December - Joppa, IN
  • Average humidity in December: 82%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (74%).

Average rainfall in December
Joppa, IN

Average rainfall in December - Joppa, IN
  • Average rainfall in December: 2.76"

The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is September (2.2").

Average rainfall days in December
Joppa, IN

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

The month with the highest number of rainy days is May (20.7 days).
The month with the least rainy days is January (8.8 days).

Average snowfall in December
Joppa, IN

Average snowfall in December - Joppa, IN
  • Average snowfall in December: 3.11"

The month with the highest snowfall is January (3.35").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Joppa, IN

Average snowfall days in December - Joppa, IN
  • Average snowfall days in December: 7.6 days

The month with the highest number of snowfall days is January (9.6 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
Joppa, IN

Average daylight in December / Average sunshine in December - Joppa, IN
  • Average daylight in December: 9h and 2min

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 24min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in December
Joppa, IN

Average sunshine days in December - Joppa, IN
  • Average sunshine days in December: 13.7 days

The month with the most sunshine days is October (16.6 days).
The month with the least sunshine days is May (8.4 days).

Average UV index in December
Joppa, IN

Average UV index in December - Joppa, 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, October, November and December (UV index 2).

Average cloud cover in December
Joppa, IN

Average cloud cover in December - Joppa, 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
Joppa, IN

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

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

Joppa, Indiana, USA

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