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 advent of December brings a subtle shift in temperature, with the average high moving from a comfortable 67.5°F (19.7°C) in November to a still refreshing 59.4°F (15.2°C). Iraan records an average low of 41.2°F (5.1°C) throughout the nights in December.Humidity
September, October and December, with an average relative humidity of 52%, are the most humid months.Rainfall
In Iraan, in December, during 4.1 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. In Iraan, during the entire year, the rain falls for 78 days and collects up to 10.59" (269mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. The month with the most snowfall is December, when snow falls for 0.9 days and typically aggregates up to 0.51" (13mm) of snow.Daylight
December has the shortest days of the year, with an average of 10h and 12min of daylight.On the first day of December, sunrise is at 7:28 am and sunset at 5:45 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 5:56 pm CST.
Sunshine
November and December, with an average of 6.9h of sunshine, are months with the least sunshine.UV index
With an average maximum UV index of 3, December is the month with the lowest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 3 during December translates into these guidelines:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Keep in mind! Snow's reflective quality 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
What are December temperatures?
What are the most humid months?
What is the average humidity in December?
How many days does it rain in December?
When does it snow the most?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Iraan have in December?
When is the sunrise / sunset in December?
What are the months with the least sunshine?
How many hours of sunshine does Iraan have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Iraan, TX
- Average high temperature in December: 59.4°F
The warmest month (with the highest average high temperature) is August (95.2°F).
The month with the lowest average high temperature is January (59.2°F).
- Average low temperature in December: 41.2°F
The months with the highest average low temperature are July and August (75.6°F).
The coldest month (with the lowest average low temperature) is January (39.6°F).
Average pressure in December
Iraan, TX
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are May and June (29.86"Hg).
Average wind speed in December
Iraan, TX
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is June (14.9mph).
The calmest month (with the lowest average wind speed) is December (9.5mph).
Average humidity in December
Iraan, TX
- Average humidity in December: 52%
The months with the highest relative humidity are September, October and December (52%).
The month with the lowest relative humidity is April (38%).
Average rainfall in December
Iraan, TX
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is May (1.89").
The driest month (with the least rainfall) is February (0.28").
Average rainfall days in December
Iraan, TX
- Average rainfall days in December: 4.1 days
The month with the highest number of rainy days is September (11 days).
The month with the least rainy days is January (2.8 days).
Average snowfall in December
Iraan, TX
- Average snowfall in December: 0.51"
The month with the highest snowfall is December (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Iraan, TX
- Average snowfall days in December: 0.9 days
The months with the highest number of snowfall days are January and February (1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Iraan, TX
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in December: 6h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The months with the least sunshine are November and December (Average sunshine: 6h and 54min).
Average sunshine days in December
Iraan, TX
- Average sunshine days in December: 25.1 days
The month with the most sunshine days is January (26.9 days).
The month with the least sunshine days is September (15.7 days).
Average UV index in December
Iraan, TX
- Average UV index in December: 3
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Iraan, TX
- Average cloud cover in December: 21
The month with the most cloud cover is September (Cloud cover 22).
The months with the least cloud cover are June and August (Cloud cover 13).
Average visibility in December
Iraan, TX
- 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).
Iraan, Texas, USA
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