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
With December's arrival, Gray sees a decrease in average high-temperatures, moving from a chilly 45.9°F (7.7°C) in November to a cold 32°F (0°C). During December, an average low-temperature of 20.7°F (-6.3°C) is observed.Humidity
The average relative humidity in December in Gray is 80%.Rainfall
In Gray, during December, the rain falls for 4.5 days and regularly aggregates up to 1.57" (40mm) of precipitation. Throughout the year, in Gray, Iowa, there are 126.1 rainfall days, and 26.38" (670mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Gray, in December, during 9.1 snowfall days, 3.07" (78mm) of snow is typically accumulated. In Gray, during the entire year, snow falls for 41.5 days and aggregates up to 18.23" (463mm) of snow.Daylight
The month with the shortest days in Gray, Iowa, is December, with an average of 9h and 12min of daylight.On the first day of December in Gray, sunrise is at 7:28 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 4:59 pm CST.
Sunshine
In Gray, the average sunshine in December is 4.7h.UV index
The months with the lowest UV index in Gray are January, February, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 2 during December leads to these instructions:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Around midday, solar radiation is most harmful; hence, exposure should be limited. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
How cold is it in Gray in December?
What is the average humidity in December in Gray?
How much does it rain in Gray in December?
How much does it snow in Gray in December?
What is the month with the shortest days in Gray?
What is the average length of the day in December in Gray?
When is the sunrise / sunset in December in Gray?
How many hours of sunshine does Gray have in December?
What are the months with the lowest UV index in Gray?
What is the UV index intensity in December in Gray?
Average temperature in December
Gray, IA
- Average high temperature in December: 32°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (26.6°F).
- Average low temperature in December: 20.7°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure in December
Gray, IA
- 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 (29.87"Hg).
Average wind speed in December
Gray, IA
- Average wind speed in December: 10.6mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in December
Gray, IA
- Average humidity in December: 80%
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are April and October (69%).
Average rainfall in December
Gray, IA
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in December
Gray, IA
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in December
Gray, IA
- Average snowfall in December: 3.07"
The month with the highest snowfall is February (4.96").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Gray, IA
- Average snowfall days in December: 9.1 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Gray, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Gray, IA
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in December
Gray, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in December
Gray, IA
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
Gray, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Gray, Iowa, USA
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