December weather forecastMarengo, IN
December
Weather in December
December, the first month of the winter in Marengo, is still a chilly month, with an average temperature fluctuating between 42.8°F (6°C) and 30.9°F (-0.6°C).Temperature
December's onset brings a slight change in high-temperatures, falling from a fresh 52°F (11.1°C) in November to a chilly 42.8°F (6°C). Throughout the month of December, Marengo witnesses an average temperature of 30.9°F (-0.6°C).Humidity
February and December, with an average relative humidity of 81%, are the most humid months in Marengo.Rainfall
In Marengo, during December, the rain falls for 8.2 days and regularly aggregates up to 1.38" (35mm) of precipitation. Throughout the year, there are 137.1 rainfall days, and 20.28" (515mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Marengo, during December, snow falls for 5 days and regularly aggregates up to 0.59" (15mm) of snow. In Marengo, during the entire year, snow falls for 23.6 days and aggregates up to 3.46" (88mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Marengo.On the first day of December in Marengo, sunrise is at 7:44 am and sunset at 5:25 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 5:35 pm EST.
Sunshine
December has the least sunshine of the year in Marengo, with an average of 4.1h of sunshine.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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: A typical high UV index of 2 in December suggests the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Marengo, IN
- Average high temperature in December: 42.8°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in December: 30.9°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure in December
Marengo, 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
Marengo, IN
- Average wind speed in December: 6.9mph
The windiest months (with the highest average wind speed) are January, February and April (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in December
Marengo, IN
- Average humidity in December: 81%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Marengo, IN
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is July (2.24").
The driest month (with the least rainfall) is September (0.98").
Average rainfall days in December
Marengo, IN
- Average rainfall days in December: 8.2 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is December (8.2 days).
Average snowfall in December
Marengo, IN
- Average snowfall in December: 0.59"
The month with the highest snowfall is February (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Marengo, IN
- Average snowfall days in December: 5 days
The month with the highest number of snowfall days is January (6.6 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
Marengo, IN
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 6min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in December
Marengo, IN
- Average sunshine days in December: 17.9 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is May (12 days).
Average UV index in December
Marengo, 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
Marengo, IN
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Marengo, IN
- Average visibility in December: 5mi
The months with the highest visibility are April, October and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and December (5mi).
