Saint Louis County (Eureka)
December
Weather in Saint Louis County for December 2025
Your guide to Saint Louis County weather in December - trends and predictions
Snowfall in Saint Louis County during December is quite rare, with fewer than 2 snowy days on average.
In general, the average temperature in Saint Louis County at the beginning of December is 3.6 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 9.1 °F by the end of December.
Saint Louis County experiences moderate rainfall in December, with an average of 7 rainy days and a total precipitation of 183.9 mm.
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Snow Forecast ❄️
Temperatures
Rain 🌧️
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23
Dry days
7
Rainy days
1
Snow days
7°/1°
Temperatures
17 km/h
Avg max wind
74 %
Avg humidity
Saint Louis County Weather December
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  0° | 2  0° | 3  2° | 4  11° | 5  0° | 6 2° | |
| 7 10° | 8 9° | 9  10° | 10 6° | 11  2° | 12 6° | 13 3° |
| 14  5° | 15 11° | 16 14° | 17 10° | 18 8° | 19 7° | 20 4° |
| 21 3° | 22 5° | 23 5° | 24  5° | 25 6° | 26 8° | 27  11° |
| 28 11° | 29 11° | 30 9° | 31 8° |
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Access Saint Louis County weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during December in Saint Louis County
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 | Sunny | 0° /-4° | 0 mm | 0 cm | |
| Dec. 2 | Moderate snow | 0° /-2° | 9.6 mm | 7 cm | |
| Dec. 3 | Partly cloudy | 2° /-5° | 0 mm | 0 cm | |
| Dec. 4 | Overcast | 11° /0° | 0 mm | 0 cm | |
| Dec. 5 | Cloudy | 0° /-7° | 0 mm | 0 cm | |
| Dec. 6 | Cloudy | 2° /-3° | 0 mm | 0 cm | |
| Dec. 7 | Sunny | 10° /0° | 0 mm | 0 cm | |
| Dec. 8 | Overcast | 9° /4° | 0 mm | 0 cm | |
| Dec. 9 | Mist | 10° /7° | 0 mm | 0 cm | |
| Dec. 10 | Overcast | 6° /0° | 0 mm | 0 cm | |
| Dec. 11 | Patchy rain possible | 2° /-2° | 0 mm | 0 cm | |
| Dec. 12 | Partly cloudy | 6° /-2° | 0 mm | 0 cm | |
| Dec. 13 | Overcast | 3° /-4° | 0 mm | 0 cm | |
| Dec. 14 | Moderate or heavy rain shower | 5° /0° | 69.6 mm | 0 cm | |
| Dec. 15 | Mist | 11° /6° | 0 mm | 0 cm | |
| Dec. 16 | Moderate or heavy rain shower | 14° /7° | 29.5 mm | 0 cm | |
| Dec. 17 | Overcast | 10° /3° | 0 mm | 0 cm | |
| Dec. 18 | Mist | 8° /3° | 0 mm | 0 cm | |
| Dec. 19 | Partly cloudy | 7° /-1° | 0 mm | 0 cm | |
| Dec. 20 | Partly cloudy | 4° /-2° | 0 mm | 0 cm | |
| Dec. 21 | Partly cloudy | 3° /-2° | 0 mm | 0 cm | |
| Dec. 22 | Sunny | 5° /-1° | 0 mm | 0 cm | |
| Dec. 23 | Overcast | 5° /2° | 0 mm | 0 cm | |
| Dec. 24 | Heavy rain at times | 5° /4° | 33.3 mm | 0 cm | |
| Dec. 25 | Fog | 6° /4° | 0.9 mm | 0 cm | |
| Dec. 26 | Fog | 8° /6° | 0 mm | 0 cm | |
| Dec. 27 | Heavy rain | 11° /7° | 35.7 mm | 0 cm | |
| Dec. 28 | Overcast | 11° /9° | 3 mm | 0 cm | |
| Dec. 29 | Fog | 11° /9° | 0 mm | 0 cm | |
| Dec. 30 | Overcast | 9° /7° | 2.4 mm | 0 cm | |
| Dec. 31 | Overcast | 8° /1° | 0 mm | 0 cm | |
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Important Notice
Our weather forecast for Saint Louis County 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 Saint Louis County forecast closer to your planned date for the most up-to-date weather information.
Saint Louis County in December - FAQ
What are the expected maximum and minimum temperatures in Saint Louis County during December?
Prepare for cooler days with highs just around 7° and colder nights, dipping below 1°.
How much rainfall should be expected in Saint Louis County during December?
Significant rainfall exceeding 183.9 mm is expected in Saint Louis County during December, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Saint Louis County in December 2025?
Saint Louis County typically sees 7 cm of snowfall during December.
What are the typical wind conditions in Saint Louis County during December?
The average wind speed in Saint Louis County during December is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
Saint Louis County snow forecast December 2025
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December rainfall patterns in Saint Louis County
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Where is Saint Louis County?Get accurate weather forecasts for Saint Louis County, located at latitude 38.503 and longitude -90.628. Stay updated with localized weather information tailored for Saint Louis County.
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