December weather forecastGreenfield, OK
December
Weather in December
December, the first month of the winter in Greenfield, is still a chilly month, with temperature in the range of an average high of 48.6°F (9.2°C) and an average low of 32°F (0°C).Temperature
Greenfield's progression into December involves a drop in the average high-temperature, receding from a moderate 58.8°F (14.9°C) in November to a chilly 48.6°F (9.2°C). During December, Greenfield records an average temperature of 32°F (0°C) at night.Humidity
In December, the average relative humidity is 65%.Rainfall
The months with the least rainfall in Greenfield are January, February, November and December Rain falls for 5.3 days and accumulates 0.83" (21mm) of rain.Snowfall
January through April, October through December are months with snowfall. In December, it is snowing for 2.5 days. Throughout December, 0.47" (12mm) of snow is accumulated. Throughout the year, in Greenfield, Oklahoma, there are 10.7 snowfall days, and 4.13" (105mm) of snow is accumulated.Daylight
With an average of 9h and 48min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:25 am and sunset at 5:20 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:30 pm CST.
Sunshine
The months with the least sunshine are November and December, with an average of 6.4h of sunshine.UV index
December is the month with the lowest UV index, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. When the Sun is at its strongest around midday, find shade and limit exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Greenfield, OK
- Average high temperature in December: 48.6°F
The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is January (47.8°F).
- Average low temperature in December: 32°F
The month with the highest average low temperature is July (73.9°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).
Average pressure in December
Greenfield, OK
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Greenfield, OK
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is April (12.6mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).
Average humidity in December
Greenfield, OK
- Average humidity in December: 65%
The month with the highest relative humidity is May (67%).
The month with the lowest relative humidity is August (55%).
Average rainfall in December
Greenfield, OK
- Average rainfall in December: 0.83"
The wettest month (with the highest rainfall) is May (3.54").
The driest months (with the least rainfall) are January, February, November and December (0.83").
Average rainfall days in December
Greenfield, OK
- Average rainfall days in December: 5.3 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in December
Greenfield, OK
- Average snowfall in December: 0.47"
The month with the highest snowfall is February (1.57").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Greenfield, OK
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is February (3.3 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
Greenfield, OK
- Average daylight in December: 9h and 48min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 6h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The months with the least sunshine are November and December (Average sunshine: 6h and 24min).
Average sunshine days in December
Greenfield, OK
- Average sunshine days in December: 23 days
The month with the most sunshine days is January (24.4 days).
The month with the least sunshine days is April (14.8 days).
Average UV index in December
Greenfield, OK
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Greenfield, OK
- Average cloud cover in December: 28
The months with the most cloud cover are March and April (Cloud cover 34).
The months with the least cloud cover are June and August (Cloud cover 18).
Average visibility in December
Greenfield, OK
- 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).
