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 transition into December involves a decrease in the average high-temperature, falling from a chilly 48.6°F (9.2°C) in November to an icy 38.1°F (3.4°C). An average low-temperature of 28.6°F (-1.9°C) marks the nights throughout December.Humidity
In Irwin, Ohio, the average relative humidity in December is 83%.Rainfall
In Irwin, Ohio, in December, during 8.1 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. In Irwin, during the entire year, the rain falls for 148.3 days and collects up to 21.57" (548mm) of precipitation.Snowfall
Months with snowfall in Irwin are January through April, November and December. In December, it is snowing for 6 days. Throughout December, 1.18" (30mm) of snow is accumulated. Throughout the year, there are 28 snowfall days, and 6.46" (164mm) 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 the month, sunrise is at 7:37 am and sunset at 5:08 pm. On the last day of December, sunrise is at 7:56 am and sunset at 5:18 pm EST.
Sunshine
In Irwin, the average sunshine in December is 3.9h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 1 during December translates into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Irwin in December?
What is the average humidity in December in Irwin?
How many days does it rain in December in Irwin?
How much does it snow in Irwin in December?
What is the month with the shortest days in Irwin?
What is the average length of the day in December in Irwin?
What time are sunrise and sunset in December in Irwin?
How many hours of sunshine does Irwin have in December?
When is the lowest UV index in Irwin?
What is the UV index intensity in December in Irwin?
Average temperature in December
Irwin, OH
- Average high temperature in December: 38.1°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (32.2°F).
- Average low temperature in December: 28.6°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in December
Irwin, OH
- Average pressure in December: 30.12"Hg
The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Irwin, OH
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in December
Irwin, OH
- Average humidity in December: 83%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Irwin, OH
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is May (2.99").
The driest month (with the least rainfall) is November (1.22").
Average rainfall days in December
Irwin, OH
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is February (6.5 days).
Average snowfall in December
Irwin, OH
- Average snowfall in December: 1.18"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Irwin, OH
- Average snowfall days in December: 6 days
The month with the highest number of snowfall days is February (7.9 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, OH
- 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: 3h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in December
Irwin, OH
- Average sunshine days in December: 17 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in December
Irwin, OH
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Irwin, OH
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Irwin, OH
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (6mi).
The month with the lowest visibility is September (5mi).
Irwin, Ohio, USA
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