City of Saint Louis (St. Louis)
December
Weather in City of Saint Louis for December 2025
Your guide to City of Saint Louis weather in December - trends and predictions
With an average of 3 snowy days, City of Saint Louis usually enjoys a light touch of snow in December.
In general, the average temperature in City of Saint Louis at the beginning of December is 9.7 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 8.1 °F by the end of December.
The climate of City of Saint Louis in December is notably wet, with an average of 15 rainy days, and a total of 68 mm of precipitation.
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Snow Forecast ❄️
Temperatures
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13
Dry days
15
Rainy days
3
Snow days
8°/1°
Temperatures
20 km/h
Avg max wind
68 %
Avg humidity
City of Saint Louis in December average weather
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  8° | 2  12° | 3  11° | 4 9° | 5 10° | 6 8° | |
| 7 10° | 8 11° | 9  13° | 10 10° | 11 10° | 12 10° | 13 9° |
| 14 11° | 15 10° | 16  10° | 17 6° | 18 5° | 19 6° | 20 7° |
| 21 8° | 22 7° | 23 7° | 24 7° | 25 7° | 26  8° | 27 9° |
| 28 8° | 29 8° | 30 9° | 31 8° |
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Temperatures trend during December in City of Saint Louis
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 | Patchy rain possible | 8° /1° | 7.9 mm | 0 cm | |
| Dec. 2 | Overcast | 12° /3° | 0.2 mm | 0 cm | |
| Dec. 3 | Sunny | 11° /1° | 0.2 mm | 0 cm | |
| Dec. 4 | Overcast | 9° /1° | 0 mm | 0 cm | |
| Dec. 5 | Patchy rain possible | 10° /0° | 0.9 mm | 0 cm | |
| Dec. 6 | Sunny | 8° /0° | 0.9 mm | 0 cm | |
| Dec. 7 | Overcast | 10° /0° | 0.1 mm | 0 cm | |
| Dec. 8 | Overcast | 11° /4° | 1.5 mm | 0 cm | |
| Dec. 9 | Cloudy | 13° /4° | 2.3 mm | 0 cm | |
| Dec. 10 | Overcast | 10° /2° | 1.8 mm | 0 cm | |
| Dec. 11 | Overcast | 10° /0° | 0.7 mm | 0 cm | |
| Dec. 12 | Sunny | 10° /1° | 1.6 mm | 0 cm | |
| Dec. 13 | Overcast | 9° /1° | 4.4 mm | 0 cm | |
| Dec. 14 | Sunny | 11° /2° | 17 mm | 0 cm | |
| Dec. 15 | Overcast | 10° /4° | 0 mm | 0 cm | |
| Dec. 16 | Moderate or heavy rain shower | 10° /3° | 10.4 mm | 0 cm | |
| Dec. 17 | Sunny | 6° /1° | 3 mm | 0 cm | |
| Dec. 18 | Overcast | 5° /-1° | 2 mm | 0 cm | |
| Dec. 19 | Overcast | 6° /-2° | 0 mm | 0 cm | |
| Dec. 20 | Cloudy | 7° /-1° | 0 mm | 0 cm | |
| Dec. 21 | Sunny | 8° /0° | 0 mm | 0 cm | |
| Dec. 22 | Sunny | 7° /-3° | 1.8 mm | 0 cm | |
| Dec. 23 | Overcast | 7° /-2° | 0.8 mm | 0 cm | |
| Dec. 24 | Cloudy | 7° /0° | 4.4 mm | 0 cm | |
| Dec. 25 | Sunny | 7° /-1° | 3 mm | 0 cm | |
| Dec. 26 | Partly cloudy | 8° /0° | 1.5 mm | 0 cm | |
| Dec. 27 | Overcast | 9° /1° | 11.7 mm | 0.8 cm | |
| Dec. 28 | Overcast | 8° /2° | 5.7 mm | 1.2 cm | |
| Dec. 29 | Patchy rain possible | 8° /3° | 3 mm | 0.5 cm | |
| Dec. 30 | Overcast | 9° /2° | 9.4 mm | 0 cm | |
| Dec. 31 | Overcast | 8° /1° | 0.2 mm | 0 cm | |
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Important Notice
Our weather forecast for City of Saint Louis in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the City of Saint Louis forecast closer to your planned date for the most up-to-date weather information.
City of Saint Louis in December - FAQ
What are the expected maximum and minimum temperatures in City of Saint Louis during December?
Prepare for cooler days with highs just around 8° and colder nights, dipping below 1°.
How much rainfall should be expected in City of Saint Louis during December?
Moderate rainfall is anticipated in City of Saint Louis during December, with a total of 68 mm spread over approximately 15 days. Considering plans for rainy days is advisable.
Will it snow in City of Saint Louis in December 2025?
City of Saint Louis experiences an average snowfall of 3.03 cm during December, occurring over 3 days.
What are the typical wind conditions in City of Saint Louis during December?
The average wind speed in City of Saint Louis during December is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
City of Saint Louis snow forecast December 2025
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December rainfall patterns in City of Saint Louis
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