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
A decrease in the average high-temperature is observed during December, shifting from a fresh 53.6°F (12°C) in November to a chilly 42.8°F (6°C). Throughout December, an average nighttime temperature of 28.9°F (-1.7°C) is experienced.Humidity
In Merwin, the average relative humidity in December is 73%.Rainfall
In Merwin, in December, during 4.3 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. In Merwin, during the entire year, the rain falls for 114.1 days and collects up to 13.9" (353mm) of precipitation.Snowfall
Months with snowfall are January through March, May, October through December. In Merwin, in December, snow falls for 2 days, with typically accumulated 0.31" (8mm) of snow. In Merwin, during the entire year, snow falls for 11.5 days and aggregates up to 2.2" (56mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of December in Merwin, sunrise is at 7:17 am and sunset at 4:58 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:08 pm CST.
Sunshine
The average sunshine in December in Merwin, Missouri, is 5.5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 2 in December transforms into this advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Direct Sun exposure should be minimized especially during midday when radiation is most intense. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
Is December cold in Merwin?
What is the average humidity in December in Merwin?
How many days does it rain in December in Merwin?
How much does it snow in Merwin in December?
What is the month with the shortest days in Merwin?
How many hours of daylight does Merwin have in December?
What time are sunrise and sunset in December in Merwin?
How many hours of sunshine does Merwin have in December?
What is the month with the lowest UV index in Merwin?
What is the UV index intensity in December in Merwin?
Average temperature in December
Merwin, MO
- Average high temperature in December: 42.8°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 28.9°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 (24.3°F).
Average pressure in December
Merwin, MO
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Merwin, MO
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in December
Merwin, MO
- Average humidity in December: 73%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Merwin, MO
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in December
Merwin, MO
- Average rainfall days in December: 4.3 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (3.5 days).
Average snowfall in December
Merwin, MO
- Average snowfall in December: 0.31"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, June, July, August and September (0").
Average snowfall days in December
Merwin, MO
- Average snowfall days in December: 2 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Merwin, MO
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in December
Merwin, MO
- Average sunshine days in December: 25.1 days
The month with the most sunshine days is January (25.2 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in December
Merwin, 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, November and December (UV index 2).
Average cloud cover in December
Merwin, MO
- Average cloud cover in December: 40
The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 26).
Average visibility in December
Merwin, 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).
Merwin, Missouri, USA
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