St. Louis
December
Weather in St. Louis for December 2025
Your guide to St. Louis weather in December - trends and predictions
With an average of 3 snowy days, St. Louis usually enjoys a light touch of snow in December.
In general, the average temperature in St. 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 St. 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
Rain 🌧️
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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
St. Louis in December average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 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 St. 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 St. 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 St. Louis forecast closer to your planned date for the most up-to-date weather information.
St. Louis in December - FAQ
What are the expected maximum and minimum temperatures in St. 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 St. Louis during December?
Moderate rainfall is anticipated in St. 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 St. Louis in December 2025?
St. Louis experiences an average snowfall of 3.03 cm during December, occurring over 3 days.
What are the typical wind conditions in St. Louis during December?
The average wind speed in St. Louis during December is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
St. Louis snow forecast December 2025
Track daily snowfall levels and discover St. Louis’s snowy potential this December ❄️
December rainfall patterns in St. Louis
Explore the daily rainfall trends and prepare for St. Louiss December weather 💧
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