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
Welcoming December, Flat Iron observes a shift in the average high-temperature, falling from November's frosty 48.9°F (9.4°C) to an icy 37.6°F (3.1°C). Flat Iron registers a consistent average low-temperature of 27.5°F (-2.5°C) during December.Humidity
In Flat Iron, the average relative humidity in December is 81%.Rainfall
In Flat Iron, during December, the rain falls for 8.8 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, there are 151.8 rainfall days, and 25.63" (651mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Flat Iron, in December, snow falls for 7.9 days, with typically accumulated 2.09" (53mm) of snow. Throughout the year, there are 35.2 snowfall days, and 8.82" (224mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Flat Iron.On the first day of the month, sunrise is at 7:53 am and sunset at 5:25 pm. On the last day of December, sunrise is at 8:11 am and sunset at 5:34 pm EST.
Sunshine
The average sunshine in December is 4.5h.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 vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 during December translates into the following directions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What is the average humidity in December in Flat Iron?
How much 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 Flat Iron have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Flat Iron have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Flat Iron, IN
- Average high temperature in December: 37.6°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in December
Flat Iron, 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
Flat Iron, IN
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Flat Iron, IN
- Average humidity in December: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Flat Iron, IN
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is April (3.23").
The driest months (with the least rainfall) are February and September (1.38").
Average rainfall days in December
Flat Iron, IN
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (6.6 days).
Average snowfall in December
Flat Iron, IN
- Average snowfall in December: 2.09"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Flat Iron, IN
- Average snowfall days in December: 7.9 days
The month with the highest number of snowfall days is January (10.6 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
Flat Iron, IN
- 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 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Flat Iron, IN
- Average sunshine days in December: 15.6 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in December
Flat Iron, 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
Flat Iron, IN
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are June, August and September (Cloud cover 32).
Average visibility in December
Flat Iron, IN
- 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).
Flat Iron, Indiana, USA
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