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Saint Louis County (Eureka)
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United States weather

Weather in Saint Louis County, Missouri for December 2025

Your guide to Saint Louis County weather in December - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Saint Louis County during December is quite rare, with fewer than 2 snowy days on average.
    According to Saint Louis County snow forecast for December 2025, no snow is expected until the end of the month.

    • Temperatures

  • Until now, December 2025 in Saint Louis County is slightly cooler than the historical average by -1.4 °F.

  • The forecast for the next days in Saint Louis County predicts temperatures to be around 13 °F, close to the historical average.

  • In general, the average temperature in Saint Louis County at the beginning of December is 2.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 14.9 °F by the end of December.

    • Rain 🌧️

  • Saint Louis County experiences moderate rainfall in December, with an average of 6 rainy days and a total precipitation of 184 mm.

    • More

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Average dry days
24
Dry days
Average rainy days
6
Rainy days
Average snowy days
1
Snow days
Average temperatures
7°/1°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
73 %
Avg humidity

Saint Louis County Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
0°
2
Moderate snow
1°
3
Partly cloudy
3°
4
Overcast
5°
5
Cloudy
3°
6
Cloudy
2°
7
Sunny
6°
8
Overcast
6°
9
Mist
10°
10
Overcast
8°
11
Patchy rain possible
4°
12
Partly cloudy
6°
13
Overcast
2°
14
Moderate or heavy rain shower
-0°
15
Mist
8°
16
Moderate or heavy rain shower
10°
17
Overcast
11°
18
Mist
10°
19
Partly cloudy
6°
20
Sunny
14°
21
Partly cloudy
5°
22
Cloudy
8°
23
Overcast
12°
24
Cloudy
20°
25
Partly cloudy
24°
26
Sunny
11°
27
Sunny
9°
28
Sunny
13°
29
Partly cloudy
21°
30
Patchy rain possible
17°
31
Patchy rain possible
9°

Temperatures trend during December in Saint Louis County

See the weather trend as well as the moving average line

December weather in Saint Louis County day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Sunny
Sunny
 0° /-4° 2.2 mm 1.6 cm
Dec. 2 Moderate snow
Moderate snow
 1° /-3° 10.6 mm 5.9 cm
Dec. 3 Partly cloudy
Partly cloudy
 3° /-4° 0 mm 0 cm
Dec. 4 Overcast
Overcast
 5° /-4° 0 mm 0 cm
Dec. 5 Cloudy
Cloudy
 3° /-7° 0 mm 0 cm
Dec. 6 Cloudy
Cloudy
 2° /-2° 0 mm 0 cm
Dec. 7 Sunny
Sunny
 6° /-1° 0 mm 0 cm
Dec. 8 Overcast
Overcast
 6° /0° 0 mm 0 cm
Dec. 9 Mist
Mist
 10° /3° 0 mm 0 cm
Dec. 10 Overcast
Overcast
 8° /0° 0 mm 0 cm
Dec. 11 Patchy rain possible
Patchy rain possible
 4° /-1° 0 mm 0 cm
Dec. 12 Partly cloudy
Partly cloudy
 6° /-1° 0 mm 0 cm
Dec. 13 Overcast
Overcast
 2° /-5° 0 mm 0 cm
Dec. 14 Moderate or heavy rain shower
Moderate or heavy rain shower
 0° /-6° 34.8 mm 0 cm
Dec. 15 Mist
Mist
 8° /-2° 0 mm 0 cm
Dec. 16 Moderate or heavy rain shower
Moderate or heavy rain shower
 10° /3° 14.7 mm 0 cm
Dec. 17 Overcast
Overcast
 11° /3° 0 mm 0 cm
Dec. 18 Mist
Mist
 10° /3° 0 mm 0 cm
Dec. 19 Partly cloudy
Partly cloudy
 6° /-2° 0 mm 0 cm
Dec. 20 Sunny
Sunny
 14° /0° 0 mm 0 cm
Dec. 21 Partly cloudy
Partly cloudy
 5° /-2° 0 mm 0 cm
Dec. 22 Cloudy
Cloudy
 8° /0° 0 mm 0 cm
Dec. 23 Overcast
Overcast
 12° /6° 0 mm 0 cm
Dec. 24 Cloudy
Cloudy
 20° /7° 0 mm 0 cm
Dec. 25 Partly cloudy
Partly cloudy
 24° /17° 0 mm 0 cm
Dec. 26 Sunny
Sunny
 11° /4° 0 mm 0 cm
Dec. 27 Sunny
Sunny
 9° /2° 0 mm 0 cm
Dec. 28 Sunny
Sunny
 13° /2° 0 mm 0 cm
Dec. 29 Partly cloudy
Partly cloudy
 21° /9° 0.1 mm 0 cm
Dec. 30 Patchy rain possible
Patchy rain possible
 17° /13° 2.3 mm 0 cm
Dec. 31 Patchy rain possible
Patchy rain possible
 9° /9° 1.2 mm 0 cm
Next
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.
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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 184 mm is expected in Saint Louis County during December, occurring over more than 6 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 6.96 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

Track daily snowfall levels and discover Saint Louis County’s snowy potential this December ❄️
On average, Saint Louis County sees 1 snowy days during December, with approximately 7 cm of total snowfall.

December rainfall patterns in Saint Louis County

Explore the daily rainfall trends and prepare for Saint Louis Countys December weather 💧
Typically, Saint Louis County has 6 rainy days in December with a total of 184 mm of rainfall.

UV exposure in Saint Louis County during December

Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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Location coordinates 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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