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
December involves a decrease in temperature, down from a fresh 54.5°F (12.5°C) in November to a frosty 45°F (7.2°C). During December, the nighttime temperature in Grassy averages to an icy 32.4°F (0.2°C).Humidity
In December, the average relative humidity is 77%.Rainfall
In December, in Grassy, the rain falls for 10 days. Throughout December, 2.24" (57mm) of precipitation is accumulated. In Grassy, during the entire year, the rain falls for 156.4 days and collects up to 35.47" (901mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In December, it is snowing for 1.9 days. Throughout December, 0.98" (25mm) of snow is accumulated. In Grassy, during the entire year, snow falls for 11.7 days and aggregates up to 4.69" (119mm) of snow.Daylight
The month with the shortest days in Grassy, Missouri, is December, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 6:56 am and sunset at 4:43 pm. On the last day of December, in Grassy, Missouri, sunrise is at 7:14 am and sunset at 4:53 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 4.7h of sunshine.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Grassy. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the maximum UV index of 2 translates into these guidelines:
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. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. 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
What is the temperature in December in Grassy?
What is the average humidity in December in Grassy?
How much does it rain in Grassy in December?
How much does it snow in Grassy in December?
What is the month with the shortest days in Grassy?
What is the average length of the day in December in Grassy?
When are sunrise and sunset in December in Grassy?
What is the month with the least sunshine in Grassy?
How many hours of sunshine does Grassy have in December?
What is the month with the lowest UV index in Grassy?
What is the UV index intensity in December in Grassy?
Average temperature in December
Grassy, MO
- Average high temperature in December: 45°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41°F).
- Average low temperature in December: 32.4°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in December
Grassy, MO
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Grassy, MO
- Average wind speed in December: 8.3mph
The windiest months (with the highest average wind speed) are January and February (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in December
Grassy, MO
- Average humidity in December: 77%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Grassy, MO
- Average rainfall in December: 2.24"
The wettest month (with the highest rainfall) is April (4.37").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in December
Grassy, MO
- Average rainfall days in December: 10 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in December
Grassy, MO
- Average snowfall in December: 0.98"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Grassy, MO
- Average snowfall days in December: 1.9 days
The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Grassy, MO
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in December
Grassy, MO
- Average sunshine days in December: 18.9 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in December
Grassy, MO
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Grassy, MO
- Average cloud cover in December: 47
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in December
Grassy, MO
- 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).
Grassy, Missouri, USA
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