December weather forecast
Silex, IN

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Weather in December

December, the first month of the winter in Silex, is also an icy month, with an average temperature fluctuating between 40.1°F (4.5°C) and 28.6°F (-1.9°C).

Temperature

The arrival of December corresponds with a reduction in the average high-temperature, down from November's cool 50.7°F (10.4°C) to an icy 40.1°F (4.5°C). Throughout December, Silex registers a consistent average low-temperature of 28.6°F (-1.9°C).

Humidity

The average relative humidity in December is 81%.

Rainfall

In December, the rain falls for 10.1 days. Throughout December, 2.2" (56mm) of precipitation is accumulated. In Silex, during the entire year, the rain falls for 154.9 days and collects up to 26.18" (665mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Silex, Indiana, during December, snow falls for 6.8 days and regularly aggregates up to 1.73" (44mm) of snow. In Silex, during the entire year, snow falls for 30.1 days and aggregates up to 7.83" (199mm) of snow.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:48 am and sunset at 5:23 pm. On the last day of the month, sunrise is at 8:06 am and sunset at 5:33 pm EST.

Sunshine

January and December, with an average of 4.3h of sunshine, are months with the least sunshine.

UV index

January, February and 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 unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold during December?

The average high-temperature, in December, in Silex, is 40.1°F (4.5°C), while the average low-temperature is 28.6°F (-1.9°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 89.6°F (32°C).

What is the average humidity in December?

The average relative humidity in December is 81%.

How much does it rain in December?

In Silex, during December, the rain falls for 10.1 days and regularly aggregates up to 2.2" (56mm) of precipitation.

How much does it snow in December?

In Silex, during December, snow falls for 6.8 days and regularly aggregates up to 1.73" (44mm) 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.

What is the average length of the day in December?

In December, the average day length is 9h and 27min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:48 am and sunset at 5:23 pm. On the last day of the month, in Silex, sunrise is at 8:06 am and sunset at 5:33 pm EST.

What is the month with the least sunshine?

The months with the least sunshine are January and December, with an average of 4.3h of sunshine.

How many hours of sunshine does Silex have in December?

In December, the average sunshine duration is 4.3h.

What is the month with the lowest UV index?

January, February 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?

The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to 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
Silex, IN

Average temperature in December - Silex, IN
  • Average high temperature in December: 40.1°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (34.9°F).

  • Average low temperature in December: 28.6°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

Average pressure in December
Silex, IN

Average pressure in December - Silex, 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 (29.93"Hg).

Average wind speed in December
Silex, IN

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

The windiest month (with the highest average wind speed) is February (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in December
Silex, IN

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

The months with the highest relative humidity are May and July (82%).
The month with the lowest relative humidity is October (74%).

Average rainfall in December
Silex, IN

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

The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days in December
Silex, IN

Average rainfall days in December - Silex, IN
  • Average rainfall days in December: 10.1 days

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
Silex, IN

Average snowfall in December - Silex, IN
  • Average snowfall in December: 1.73"

The month with the highest snowfall is January (2.17").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Silex, IN

Average snowfall days in December - Silex, IN
  • Average snowfall days in December: 6.8 days

The month with the highest number of snowfall days is January (9.1 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
Silex, IN

Average daylight in December / Average sunshine in December - Silex, 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 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The months with the least sunshine are January and December (Average sunshine: 4h and 18min).

Average sunshine days in December
Silex, IN

Average sunshine days in December - Silex, IN
  • Average sunshine days in December: 15.4 days

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (9.8 days).

Average UV index in December
Silex, IN

Average UV index in December - Silex, 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 and December (UV index 2).

Average cloud cover in December
Silex, IN

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

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in December
Silex, IN

Average visibility in December - Silex, IN
  • Average visibility in December: 6mi

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

Silex, Indiana, USA

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