December weather forecastArrow Rock, MO
December
Weather in December
December, the first month of the winter in Arrow Rock, is also an icy month, with an average temperature ranging between min 27.7°F (-2.4°C) and max 41.5°F (5.3°C).Temperature
The arrival of December signals a shift in temperature, down from a cool 52.7°F (11.5°C) in November to an icy 41.5°F (5.3°C). Throughout the month of December, Arrow Rock expects an average low of 27.7°F (-2.4°C).Humidity
In December, the average relative humidity is 76%.Rainfall
In Arrow Rock, Missouri, during December, the rain falls for 6.1 days and regularly aggregates up to 1.57" (40mm) of precipitation. Throughout the year, in Arrow Rock, there are 135.7 rainfall days, and 28.11" (714mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, May, October through December. In December, it is snowing for 3.5 days. Throughout December, 1.54" (39mm) of snow is accumulated. Throughout the year, there are 17.6 snowfall days, and 9.06" (230mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:12 am and sunset at 4:49 pm. On the last day of December, in Arrow Rock, sunrise is at 7:30 am and sunset at 4:59 pm CST.
Sunshine
In December, the average sunshine is 5.1h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Arrow Rock, MO
- Average high temperature in December: 41.5°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 (36.9°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in December
Arrow Rock, MO
- 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 (29.91"Hg).
Average wind speed in December
Arrow Rock, MO
- Average wind speed in December: 9.2mph
The windiest month (with the highest average wind speed) is March (9.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in December
Arrow Rock, MO
- Average humidity in December: 76%
The months with the highest relative humidity are May and June (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Arrow Rock, MO
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in December
Arrow Rock, MO
- Average rainfall days in December: 6.1 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in December
Arrow Rock, MO
- Average snowfall in December: 1.54"
The month with the highest snowfall is February (2.95").
The months with the least snowfall are April, June, July, August and September (0").
Average snowfall days in December
Arrow Rock, MO
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is February (5.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Arrow Rock, MO
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 6min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in December
Arrow Rock, MO
- Average sunshine days in December: 20 days
The months with the most sunshine days are January and December (20 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in December
Arrow Rock, MO
- Average UV index in December: 2
The months with the highest UV index are 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
Arrow Rock, MO
- Average cloud cover in December: 45
The months with the most cloud cover are January, February and March (Cloud cover 48).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in December
Arrow Rock, 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).
