December weather forecastGreenfield, OH
December
Weather in December
The first month of the winter, December, is also a wintry month in Greenfield, Ohio, with an average temperature varying between 29.8°F (-1.2°C) and 40.3°F (4.6°C).Temperature
A change in temperatures is noted as November gives way to December, with average highs reducing from a fresh 50.4°F (10.2°C) to an icy 40.3°F (4.6°C). During December, the nighttime temperature in Greenfield averages of 29.8°F (-1.2°C).Humidity
January, February and December, with an average relative humidity of 82%, are the most humid months in Greenfield.Rainfall
In Greenfield, during December, the rain falls for 9.5 days and regularly aggregates up to 1.18" (30mm) of precipitation. Throughout the year, in Greenfield, there are 130.7 rainfall days, and 13.82" (351mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Greenfield, during December, snow falls for 6.4 days and regularly aggregates up to 1.14" (29mm) of snow. Throughout the year, in Greenfield, Ohio, there are 28.6 snowfall days, and 5.24" (133mm) of snow is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December in Greenfield, sunrise is at 7:34 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 5:20 pm EST.
Sunshine
In December, the average sunshine is 4.1h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: In December, the maximum UV index of 1 suggests this advice:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Stay sun-safe with clothing that is both closely woven and worn loosely. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Greenfield, OH
- Average high temperature in December: 40.3°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (34.7°F).
- Average low temperature in December: 29.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in December
Greenfield, OH
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Greenfield, OH
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Greenfield, OH
- Average humidity in December: 82%
The months with the highest relative humidity are January, February and December (82%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in December
Greenfield, OH
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is May (1.73").
The driest month (with the least rainfall) is September (0.71").
Average rainfall days in December
Greenfield, OH
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in December
Greenfield, OH
- Average snowfall in December: 1.14"
The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Greenfield, OH
- Average snowfall days in December: 6.4 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Greenfield, OH
- Average daylight in December: 9h and 30min
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 6min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Greenfield, OH
- Average sunshine days in December: 17.2 days
The month with the most sunshine days is November (21 days).
The month with the least sunshine days is July (12 days).
Average UV index in December
Greenfield, OH
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Greenfield, OH
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Greenfield, OH
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
