Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The onset of December coincides with a reduction in the average high-temperature, falling from a cool 50.7°F (10.4°C) in November to a wintry 40.1°F (4.5°C). Romona registers a consistent average low-temperature of 28.6°F (-1.9°C) during December.Humidity
In December, the average relative humidity is 81%.Rainfall
In Romona, in December, it is raining for 10.1 days, with typically 2.2" (56mm) of accumulated precipitation. Throughout the year, there are 154.9 rainfall days, and 26.18" (665mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Romona, Indiana, in December, snow falls for 6.8 days, with typically accumulated 1.73" (44mm) of snow. Throughout the year, there are 30.1 snowfall days, and 7.83" (199mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:48 am and sunset at 5:24 pm. On the last day of the month, sunrise is at 8:06 am and sunset at 5:33 pm EST.
Sunshine
The months with the least sunshine are January and December, with an average of 4.3h of 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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In December, an average UV index of 2 transforms into the following instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Minimize direct exposure to the Sun during midday when its radiation is at its peak. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Romona have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Romona, 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
Romona, 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
Romona, 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
Romona, 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
Romona, 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
Romona, 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
Romona, 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
Romona, 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
Romona, IN
- 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 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
Romona, 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
Romona, 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
Romona, 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
Romona, 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).
Romona, Indiana, USA
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