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
As December begins, there is a decrease in the average high-temperature, falling from a frosty 46.4°F (8°C) in November to a wintry 34°F (1.1°C). An average low-temperature of 23.2°F (-4.9°C) is recorded during the nights in December in Blue Grass, Iowa.Humidity
In December, the average relative humidity in Blue Grass is 81%.Rainfall
In Blue Grass, in December, during 7 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. Throughout the year, there are 151.1 rainfall days, and 31.14" (791mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Blue Grass, Iowa. In December, it is snowing for 8.6 days. Throughout December, 2.72" (69mm) of snow is accumulated. Throughout the year, there are 39.2 snowfall days, and 16.54" (420mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:10 am and sunset at 4:34 pm. On the last day of December, sunrise is at 7:29 am and sunset at 4:43 pm CST.
Sunshine
In Blue Grass, the average sunshine in December is 4.4h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the maximum UV index of 1 transforms into these recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Frequently asked questions
How cold is it in Blue Grass in December?
What is the average humidity in December in Blue Grass?
How much does it rain in Blue Grass in December?
How many days does it snow in December in Blue Grass?
What is the month with the shortest days in Blue Grass?
How many hours of daylight does Blue Grass have in December?
When is the sunrise / sunset in December in Blue Grass?
How long on average sun shines in December in Blue Grass?
What is the month with the lowest UV index in Blue Grass?
What is the UV index intensity in December in Blue Grass?
Average temperature in December
Blue Grass, IA
- Average high temperature in December: 34°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in December: 23.2°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in December
Blue Grass, IA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Blue Grass, IA
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in December
Blue Grass, IA
- Average humidity in December: 81%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Blue Grass, IA
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is May (5").
The driest month (with the least rainfall) is February (1.38").
Average rainfall days in December
Blue Grass, IA
- Average rainfall days in December: 7 days
The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in December
Blue Grass, IA
- Average snowfall in December: 2.72"
The month with the highest snowfall is January (4.88").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Blue Grass, IA
- Average snowfall days in December: 8.6 days
The month with the highest number of snowfall days is January (11.6 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
Blue Grass, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Blue Grass, IA
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is December (17.4 days).
The months with the least sunshine days are May and June (8.3 days).
Average UV index in December
Blue Grass, IA
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Blue Grass, IA
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Blue Grass, IA
- 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).
Blue Grass, Iowa, USA
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