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
In December, the average high-temperature decreases from a mild 60.3°F (15.7°C) in November to a chilly 49.8°F (9.9°C). An average low-temperature of 35.8°F (2.1°C) is noted during the month of December.Humidity
In December, the average relative humidity in Saint Louis is 69%.Rainfall
In Saint Louis, during December, the rain falls for 6 days and regularly aggregates up to 0.79" (20mm) of precipitation. Throughout the year, in Saint Louis, there are 111.2 rainfall days, and 17.13" (435mm) of precipitation is accumulated.Snowfall
Months with snowfall in Saint Louis are January through April, November and December. In December, it is snowing for 0.8 days. Throughout December, 0.2" (5mm) of snow is accumulated. Throughout the year, in Saint Louis, there are 4.3 snowfall days, and 1.5" (38mm) of snow is accumulated.Daylight
The month with the shortest days in Saint Louis is December, with an average of 9h and 48min of daylight.On the first day of December, sunrise is at 7:17 am and sunset at 5:15 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:26 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 5.8h of sunshine.UV index
With an average maximum UV index of 2, December is the month with the lowest UV index in Saint Louis. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
What are the temperatures in Saint Louis in December?
What is the average humidity in December in Saint Louis?
How many days does it rain in December in Saint Louis?
How much does it snow in Saint Louis in December?
What is the month with the shortest days in Saint Louis?
What is the average length of the day in December in Saint Louis?
When is the sunrise / sunset in December in Saint Louis?
What is the month with the least sunshine in Saint Louis?
How many hours of sunshine does Saint Louis have in December?
When is the lowest UV index in Saint Louis?
What is the UV index reading in December in Saint Louis?
Average temperature in December
Saint Louis, OK
- Average high temperature in December: 49.8°F
The warmest month (with the highest average high temperature) is August (92.5°F).
The month with the lowest average high temperature is January (49.3°F).
- Average low temperature in December: 35.8°F
The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).
Average pressure in December
Saint Louis, OK
- 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 (29.89"Hg).
Average wind speed in December
Saint Louis, OK
- Average wind speed in December: 9.6mph
The windiest months (with the highest average wind speed) are March and April (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).
Average humidity in December
Saint Louis, OK
- Average humidity in December: 69%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (63%).
Average rainfall in December
Saint Louis, OK
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days in December
Saint Louis, OK
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is May (12.4 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in December
Saint Louis, OK
- Average snowfall in December: 0.2"
The month with the highest snowfall is February (0.75").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Saint Louis, OK
- Average snowfall days in December: 0.8 days
The month with the highest number of snowfall days is February (1.8 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
Saint Louis, OK
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in December
Saint Louis, OK
- Average sunshine days in December: 22.8 days
The month with the most sunshine days is January (24 days).
The months with the least sunshine days are April, May and September (15.9 days).
Average UV index in December
Saint Louis, OK
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Saint Louis, OK
- Average cloud cover in December: 35
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in December
Saint Louis, OK
- 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).
Saint Louis, Oklahoma, USA
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