December weather forecast
Latham, IL

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Weather in December

December, the first month of the winter in Latham, is also an icy month, with an average temperature ranging between max 38.3°F (3.5°C) and min 27.5°F (-2.5°C).

Temperature

Latham's weather in December involves a decrease in the average high-temperature, moving down from November's chilly 49.8°F (9.9°C) to a wintry 38.3°F (3.5°C). In the month of December, Latham records a consistent average low-temperature of 27.5°F (-2.5°C).

Humidity

In Latham, the average relative humidity in December is 79%.

Rainfall

The month with the least rainfall is December, when the rain falls for 8.3 days and typically collects 1.1" (28mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In Latham, during December, snow falls for 6.7 days and regularly aggregates up to 1.02" (26mm) of snow. In Latham, during the entire year, snow falls for 29.7 days and aggregates up to 7.13" (181mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 6:59 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:41 pm CST.

Sunshine

In December, the average sunshine is 4.5h.

UV index

In Latham, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 2 during December translates into the following guidance:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Updated: Aug 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

December temperatures vary between a high-temperature of 38.3°F (3.5°C) and a low-temperature of 27.5°F (-2.5°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in August is computed to be 87.8°F (31°C).

What is the average humidity in December?

The average relative humidity in December is 79%.

What is the driest month?

The month with the least rainfall is December, when the rain falls for 8.3 days and typically collects 1.1" (28mm) of precipitation.

How many days does it rain in December?

In Latham, in December, during 8.3 rainfall days, 1.1" (28mm) of precipitation is typically accumulated.

How many days does it snow in December?

In Latham, during December, snow falls for 6.7 days and regularly aggregates up to 1.02" (26mm) of snow.

What is the month with the shortest days in Latham?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

What is the average length of the day in December?

In Latham, the average day length in December is 9h and 23min.

What time are sunrise and sunset in December?

On the first day of December in Latham, sunrise is at 6:59 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:41 pm CST.

How long on average sun shines in December?

In December, the average sunshine duration is 4.5h.

What is the UV index reading in December?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal hazard to health 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
Latham, IL

Average temperature in December - Latham, IL
  • Average high temperature in December: 38.3°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in December: 27.5°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

Average pressure in December
Latham, IL

Average pressure in December - Latham, IL
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in December
Latham, IL

Average wind speed in December - Latham, IL
  • Average wind speed in December: 9.8mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

Average humidity in December
Latham, IL

Average humidity in December - Latham, IL
  • Average humidity in December: 79%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).

Average rainfall in December
Latham, IL

Average rainfall in December - Latham, IL
  • Average rainfall in December: 1.1"

The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is December (1.1").

Average rainfall days in December
Latham, IL

Average rainfall days in December - Latham, IL
  • Average rainfall days in December: 8.3 days

The month with the highest number of rainy days is May (17 days).
The months with the least rainy days are January and February (6.3 days).

Average snowfall in December
Latham, IL

Average snowfall in December - Latham, IL
  • Average snowfall in December: 1.02"

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

Average snowfall days in December
Latham, IL

Average snowfall days in December - Latham, IL
  • Average snowfall days in December: 6.7 days

The month with the highest number of snowfall days is January (9.4 days).
The months with the least snowfall days are May, June, July and August (0 days).

Average daylight in December /
Average sunshine in December
Latham, IL

Average daylight in December / Average sunshine in December - Latham, IL
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 4h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in December
Latham, IL

Average sunshine days in December - Latham, IL
  • Average sunshine days in December: 17.1 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (10.8 days).

Average UV index in December
Latham, IL

Average UV index in December - Latham, IL
  • Average UV index in December: 2

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

Average cloud cover in December
Latham, IL

Average cloud cover in December - Latham, IL
  • Average cloud cover in December: 53

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are June and September (Cloud cover 31).

Average visibility in December
Latham, IL

Average visibility in December - Latham, IL
  • Average visibility in December: 6mi

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

Latham, Illinois, USA

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