December weather forecast
Moro, IL

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Weather in December

December, the first month of the winter in Moro, is still a cold month, with an average temperature ranging between min 29.8°F (-1.2°C) and max 41.4°F (5.2°C).

Temperature

In Moro, the beginning of December is marked by a lowered average high-temperature, shifting from November's fresh 52.2°F (11.2°C) to an icy 41.4°F (5.2°C). During the month of December, Moro's nighttime temperature lowers to an average of 29.8°F (-1.2°C).

Humidity

In Moro, the average relative humidity in December is 77%.

Rainfall

In Moro, in December, during 6.7 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. In Moro, during the entire year, the rain falls for 138 days and collects up to 23.9" (607mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In December, it is snowing for 3.8 days. Throughout December, 0.91" (23mm) of snow is accumulated. In Moro, Illinois, during the entire year, snow falls for 18.6 days and aggregates up to 4.53" (115mm) 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 the month, sunrise is at 7:00 am and sunset at 4:38 pm. On the last day of December, sunrise is at 7:18 am and sunset at 4:48 pm CST.

Sunshine

The average sunshine in December is 4.8h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.
Note: A daily high UV index of 2 in December leads to these guidelines:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in December?

In Moro, 41.4°F (5.2°C) is the average high-temperature and 29.8°F (-1.2°C) is the average low-temperature during December. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, in August is estimated at 93.2°F (34°C).

What is the average humidity in December?

In Moro, the average relative humidity in December is 77%.

How much does it rain in December?

In Moro, during December, the rain falls for 6.7 days and regularly aggregates up to 1.38" (35mm) of precipitation.

How much does it snow in Moro in December?

In Moro, Illinois, in December, during 3.8 snowfall days, 0.91" (23mm) of snow is typically accumulated.

What is the month with the shortest days?

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

How many hours of daylight does Moro have in December?

In December, the average day length is 9h and 29min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 7:00 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:48 pm CST.

How long on average sun shines in December?

In Moro, the average sunshine duration in December is 4.8h.

When is the lowest UV index?

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

What is the UV index intensity in December?

In Moro, 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 Sun's UV rays.
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
Moro, IL

Average temperature in December - Moro, IL
  • Average high temperature in December: 41.4°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in December: 29.8°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in December
Moro, IL

Average pressure in December - Moro, IL
  • 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 (29.92"Hg).

Average wind speed in December
Moro, IL

Average wind speed in December - Moro, IL
  • Average wind speed in December: 9mph

The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

Average humidity in December
Moro, IL

Average humidity in December - Moro, IL
  • Average humidity in December: 77%

The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall in December
Moro, IL

Average rainfall in December - Moro, IL
  • Average rainfall in December: 1.38"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is February (1.14").

Average rainfall days in December
Moro, IL

Average rainfall days in December - Moro, IL
  • Average rainfall days in December: 6.7 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (5.6 days).

Average snowfall in December
Moro, IL

Average snowfall in December - Moro, IL
  • Average snowfall in December: 0.91"

The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Moro, IL

Average snowfall days in December - Moro, IL
  • Average snowfall days in December: 3.8 days

The month with the highest number of snowfall days is January (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
Moro, IL

Average daylight in December / Average sunshine in December - Moro, IL
  • 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 5min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).

Average sunshine days in December
Moro, IL

Average sunshine days in December - Moro, IL
  • Average sunshine days in December: 20.4 days

The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is July (12.3 days).

Average UV index in December
Moro, IL

Average UV index in December - Moro, IL
  • 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
Moro, IL

Average cloud cover in December - Moro, IL
  • Average cloud cover in December: 49

The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).

Average visibility in December
Moro, IL

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

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

Moro, Illinois, USA

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