Weathermondo.com
United StatesThe weather in December in Saint Louis
It's cold in December in Saint Louis with an average temperature of 9°C. Temperatures this month range from a low of 4°C to a high of 12°C. At night, you can expect temperatures between -4°C and 2°C.
Looking for sun? December isn’t a good month to be in Saint Louis. There’s too much chance of rain this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in December for Saint Louis, Missouri. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 24°C in 2021, Saint Louis reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was -14°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of -21°C to a highest value of 15°C.
Precipitation and snowfall
In December, there is an average of 145 mm of precipitation, spread over 15 days. Of the total precipitation, about 4,8 cm falls as snow in December. The wind speed is around 4 Bft, mostly coming from the Southwest.
Daily weather in December for Saint Louis
Click on any day in December to get detailed info about the usual weather on that day in Saint Louis. Check out the historical temperatures and precipitation over the past 10 years on this day.
December weather comparison
| Saint Louis | New York | |
|---|---|---|
| Average temperature | 9°C | 9°C |
| Max. temperature | 12°C | 12°C |
| Min. temperature | -4°C | -5°C |
| Total precipitation | 145 mm | 133 mm |
| Rainy days | 15 days | 17 days |
| Total snowfall | 4,8 cm | 9,7 cm |
| Snowy days | 2 days | 3 days |
Start of December
The month of December starts in Saint Louis with cold temps, averaging around 10°C during the day and nights around 1°C.
Mid December
By mid-December, daytime temps drop to around 9°C, with nights around 0°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of December
By the end of December, the average daytime temperature in Saint Louis is around 9°C, while nighttime temps are about 0°C. There’s a significant chance of many days with precipitation.
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UV index
The UV index is a maximum of 3 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Check out the climate of Saint Louis for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in December in Saint Louis, Missouri. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in December in Saint Louis
Temperature in December in Saint Louis over the years
Precipitation charts
These charts show the average amount of precipitation in December in Saint Louis, Missouri. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in December in Saint Louis
Total precipitation in December in Saint Louis over the years
Daily Snowfall in December in Saint Louis
Snowfall in December in Saint Louis per year
Daily UV index in December in Saint Louis
This chart shows the average daily UV index in December in Saint Louis, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in December in Saint Louis
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Average weather in Saint Louis by month
Click on a month below to see detailed weather info for Saint Louis. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.