December weather forecastIrwin, KY
December
Weather in December
December, the first month of the winter in Irwin, is also an icy month, with an average temperature ranging between max 42.1°F (5.6°C) and min 31.1°F (-0.5°C).Temperature
The start of December signals a decrease in the average high-temperature, transitioning from a fresh 52°F (11.1°C) in November to an icy 42.1°F (5.6°C). An average low-temperature of 31.1°F (-0.5°C) is recorded in the month of December in Irwin.Humidity
In December, the average relative humidity in Irwin is 81%.Rainfall
In December, the rain falls for 7.7 days. Throughout December, 0.75" (19mm) of precipitation is accumulated. Throughout the year, in Irwin, there are 101.6 rainfall days, and 8.15" (207mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In December, in Irwin, it is snowing for 4.3 days. Throughout December, 0.24" (6mm) of snow is accumulated. In Irwin, Kentucky, during the entire year, snow falls for 21.9 days and aggregates up to 1.57" (40mm) of snow.Daylight
The month with the shortest days in Irwin is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:33 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 5:23 pm EST.
Sunshine
In December, the average sunshine is 4.2h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 2 during December leads to these instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Irwin, KY
- Average high temperature in December: 42.1°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in December: 31.1°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Irwin, KY
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Irwin, KY
- Average wind speed in December: 7.9mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in December
Irwin, KY
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April, August, September, October and November (76%).
Average rainfall in December
Irwin, KY
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is May (0.87").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in December
Irwin, KY
- Average rainfall days in December: 7.7 days
The month with the highest number of rainy days is May (11.5 days).
The month with the least rainy days is November (6 days).
Average snowfall in December
Irwin, KY
- Average snowfall in December: 0.24"
The months with the highest snowfall are January and February (0.39").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Irwin, KY
- Average snowfall days in December: 4.3 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
Irwin, KY
- 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 12min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Irwin, KY
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is May (15.1 days).
Average UV index in December
Irwin, KY
- 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
Irwin, KY
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Irwin, KY
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).
