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Weather in City of Saint Louis, Missouri for December 2025

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

    Snow Forecast ❄️

  • With an average of 3 snowy days, City of Saint Louis usually enjoys a light touch of snow in December.
    According to City of Saint Louis snow forecast for December 2025, no snow is expected until the end of the month.

    • Temperatures

  • Until now, December 2025 in City of Saint Louis has been significantly cooler than historical averages by -5.9 °F, with average temperature of 2.4 °F.

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

  • In general, the average temperature in City of Saint Louis at the beginning of December is 7.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 14.6 °F by the end of December.

    • Rain 🌧️

  • City of Saint Louis in December brings notable rainfall, with an average of 16 rainy days and a total precipitation of 96.4 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
12
Dry days
Average rainy days
16
Rainy days
Average snowy days
3
Snow days
Average temperatures
8°/1°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
70 %
Avg humidity

City of Saint Louis Weather December

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

Temperatures trend during December in City of Saint Louis

See the weather trend as well as the moving average line

December weather in City of Saint Louis day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Overcast
Overcast
 7° /0° 7.1 mm 0.2 cm
Dec. 2 Overcast
Overcast
 9° /1° 2.9 mm 1.4 cm
Dec. 3 Sunny
Sunny
 9° /0° 0.2 mm 0 cm
Dec. 4 Overcast
Overcast
 7° /-1° 0 mm 0 cm
Dec. 5 Patchy rain possible
Patchy rain possible
 9° /-2° 0.7 mm 0 cm
Dec. 6 Sunny
Sunny
 6° /-1° 0.7 mm 0 cm
Dec. 7 Overcast
Overcast
 8° /0° 0.1 mm 0 cm
Dec. 8 Overcast
Overcast
 9° /2° 1.2 mm 0 cm
Dec. 9 Overcast
Overcast
 12° /2° 1.8 mm 0 cm
Dec. 10 Overcast
Overcast
 10° /2° 1.4 mm 0 cm
Dec. 11 Overcast
Overcast
 8° /0° 0.6 mm 0 cm
Dec. 12 Sunny
Sunny
 9° /1° 1.4 mm 0 cm
Dec. 13 Overcast
Overcast
 8° /0° 3.7 mm 0 cm
Dec. 14 Sunny
Sunny
 8° /0° 14.2 mm 0 cm
Dec. 15 Overcast
Overcast
 9° /2° 0 mm 0 cm
Dec. 16 Overcast
Overcast
 9° /2° 8.7 mm 0 cm
Dec. 17 Cloudy
Cloudy
 7° /1° 2.5 mm 0 cm
Dec. 18 Overcast
Overcast
 6° /0° 1.7 mm 0 cm
Dec. 19 Overcast
Overcast
 6° /-2° 0 mm 0 cm
Dec. 20 Sunny
Sunny
 15° /0° 0 mm 0 cm
Dec. 21 Sunny
Sunny
 5° /-5° 0 mm 0 cm
Dec. 22 Partly cloudy
Partly cloudy
 6° /-2° 0 mm 0 cm
Dec. 23 Overcast
Overcast
 10° /5° 0 mm 0 cm
Dec. 24 Partly cloudy
Partly cloudy
 18° /6° 0 mm 0 cm
Dec. 25 Sunny
Sunny
 23° /16° 0 mm 0 cm
Dec. 26 Sunny
Sunny
 11° /4° 0 mm 0 cm
Dec. 27 Sunny
Sunny
 9° /1° 0 mm 0 cm
Dec. 28 Sunny
Sunny
 12° /3° 0 mm 0 cm
Dec. 29 Partly cloudy
Partly cloudy
 20° /9° 0 mm 0 cm
Dec. 30 Patchy rain possible
Patchy rain possible
 17° /13° 2.7 mm 0 cm
Dec. 31 Patchy rain possible
Patchy rain possible
 10° /9° 1.3 mm 0 cm
Next
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.
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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 96.4 mm spread over approximately 16 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 2.424 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

Track daily snowfall levels and discover City of Saint Louis’s snowy potential this December ❄️
On average, City of Saint Louis sees 3 snowy days during December, with approximately 2.4 cm of total snowfall.

December rainfall patterns in City of Saint Louis

Explore the daily rainfall trends and prepare for City of Saint Louiss December weather 💧
Typically, City of Saint Louis has 16 rainy days in December with a total of 96.4 mm of rainfall.

UV exposure in City of Saint Louis during December

Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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Get accurate weather forecasts for City of Saint Louis, located at latitude 38.627 and longitude -90.198. Stay updated with localized weather information tailored for City of Saint Louis.

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