December weather forecastPost Oak, MO
December
Weather in December
December, the first month of the winter in Post Oak, is still a cold month, with temperature in the range of an average low of 28.6°F (-1.9°C) and an average high of 42.3°F (5.7°C).Temperature
Post Oak's progression into December involves a drop in the average high-temperature, receding from a fresh 53.1°F (11.7°C) in November to an icy 42.3°F (5.7°C). During December, the temperature in Post Oak is averaged to a low of 28.6°F (-1.9°C) at night.Humidity
In December, the average relative humidity is 75%.Rainfall
In Post Oak, during December, the rain falls for 7.1 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, there are 130 rainfall days, and 21.81" (554mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall in Post Oak. In Post Oak, in December, snow falls for 3.7 days, with typically accumulated 1.18" (30mm) of snow. Throughout the year, there are 19.3 snowfall days, and 5.39" (137mm) 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 7:14 am and sunset at 4:54 pm. On the last day of December, in Post Oak, Missouri, sunrise is at 7:32 am and sunset at 5:04 pm CST.
Sunshine
The average sunshine in December is 5.2h.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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Post Oak, MO
- Average high temperature in December: 42.3°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 (38.1°F).
- Average low temperature in December: 28.6°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in December
Post Oak, 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 (29.91"Hg).
Average wind speed in December
Post Oak, MO
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is March (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in December
Post Oak, MO
- Average humidity in December: 75%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Post Oak, MO
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in December
Post Oak, MO
- Average rainfall days in December: 7.1 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (5.5 days).
Average snowfall in December
Post Oak, MO
- Average snowfall in December: 1.18"
The month with the highest snowfall is January (1.77").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Post Oak, MO
- Average snowfall days in December: 3.7 days
The month with the highest number of snowfall days is February (6.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Post Oak, MO
- Average daylight in December: 9h and 30min
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 12min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in December
Post Oak, MO
- Average sunshine days in December: 20.6 days
The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is May (12.9 days).
Average UV index in December
Post Oak, 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
Post Oak, MO
- Average cloud cover in December: 44
The month with the most cloud cover is March (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in December
Post Oak, 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).
