December weather forecastMonrovia, IN
December
Weather in December
The first month of the winter, December, is still a cold month in Monrovia, Indiana, with an average temperature fluctuating between 28.2°F (-2.1°C) and 39.6°F (4.2°C).Temperature
The shift from November to December corresponds with a decrease in the average high-temperature, down to a cold 39.6°F (4.2°C) from a frosty 49.5°F (9.7°C). Throughout December, Monrovia anticipates an average low-temperature of 28.2°F (-2.1°C).Humidity
In December, the average relative humidity in Monrovia is 82%.Rainfall
In Monrovia, in December, it is raining for 11.3 days, with typically 2.76" (70mm) of accumulated precipitation. In Monrovia, Indiana, during the entire year, the rain falls for 171.4 days and collects up to 36.1" (917mm) of precipitation.Snowfall
Months with snowfall in Monrovia, Indiana, are January through April, October through December. In Monrovia, during December, snow falls for 7.6 days and regularly aggregates up to 3.11" (79mm) of snow. Throughout the year, in Monrovia, Indiana, there are 33.7 snowfall days, and 12.48" (317mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December in Monrovia, Indiana, sunrise is at 7:48 am and sunset at 5:22 pm. On the last day of the month, sunrise is at 8:06 am and sunset at 5:32 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 in Monrovia, Indiana. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: In December, the average maximum UV index of 2 translates into 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. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Monrovia, 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
Monrovia, 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
Monrovia, 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
Monrovia, 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
Monrovia, 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
Monrovia, 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
Monrovia, 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
Monrovia, 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
Monrovia, IN
- Average daylight in December: 9h and 24min
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 12min
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
Monrovia, 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
Monrovia, 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
Monrovia, 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
Monrovia, 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).
