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United States weather

Weather in St. Louis, Missouri for December 2025

Your guide to St. Louis weather in December - trends and predictions

    Snow Forecast ❄️

  • With an average of 3 snowy days, St. Louis usually enjoys a light touch of snow in December.
    According to St. Louis snow forecast for December 2025, no snow is expected in the next 2 weeks.

    • Temperatures

  • Expect cooler weather in the next days in St. Louis with the forecast suggesting a temperature of 2.5 °F, lower than the historical average.

  • In general, the average temperature in St. Louis at the beginning of December is 6.9 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 8.1 °F by the end of December.

    • Rain 🌧️

  • St. 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

St. 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
Partly cloudy
4°
7
Overcast
3°
8
Partly cloudy
-1°
9
Sunny
11°
10
Partly cloudy
7°
11
Sunny
12°
12
Sunny
-0°
13
Sunny
1°
14
Sunny
-0°
15
Sunny
-1°
16
Sunny
-3°
17
Partly cloudy
-1°
18
Overcast
1°
19
Overcast
6°
20
Cloudy
7°
21
Sunny
8°
22
Sunny
7°
23
Overcast
7°
24
Cloudy
7°
25
Sunny
7°
26
Partly cloudy
8°
27
Overcast
9°
28
Overcast
8°
29
Patchy rain possible
8°
30
Overcast
9°
31
Overcast
8°

Temperatures trend during December in St. Louis

See the weather trend as well as the moving average line

December weather in St. 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 Partly cloudy
Partly cloudy
 4° /-1° 0 mm 0 cm
Dec. 7 Overcast
Overcast
 3° /-2° 0 mm 0 cm
Dec. 8 Partly cloudy
Partly cloudy
 -1° /-6° 0 mm 0 cm
Dec. 9 Sunny
Sunny
 11° /-1° 0 mm 0 cm
Dec. 10 Partly cloudy
Partly cloudy
 7° /2° 0 mm 0 cm
Dec. 11 Sunny
Sunny
 12° /0° 0 mm 0 cm
Dec. 12 Sunny
Sunny
 0° /-5° 0 mm 0 cm
Dec. 13 Sunny
Sunny
 1° /-5° 0 mm 0 cm
Dec. 14 Sunny
Sunny
 0° /-5° 0 mm 0 cm
Dec. 15 Sunny
Sunny
 -1° /-5° 0 mm 0 cm
Dec. 16 Sunny
Sunny
 -3° /-8° 0 mm 0 cm
Dec. 17 Partly cloudy
Partly cloudy
 -1° /-8° 0 mm 0 cm
Dec. 18 Overcast
Overcast
 1° /-5° 0 mm 0 cm
Dec. 19 Overcast
Overcast
 6° /-2° 0 mm 0 cm
Dec. 20 Cloudy
Cloudy
 7° /-1° 0 mm 0 cm
Dec. 21 Sunny
Sunny
 8° /0° 0 mm 0 cm
Dec. 22 Sunny
Sunny
 7° /-3° 1.8 mm 0 cm
Dec. 23 Overcast
Overcast
 7° /-2° 0.8 mm 0 cm
Dec. 24 Cloudy
Cloudy
 7° /0° 4.4 mm 0 cm
Dec. 25 Sunny
Sunny
 7° /-1° 3 mm 0 cm
Dec. 26 Partly cloudy
Partly cloudy
 8° /0° 1.5 mm 0 cm
Dec. 27 Overcast
Overcast
 9° /1° 11.7 mm 0.8 cm
Dec. 28 Overcast
Overcast
 8° /2° 5.7 mm 1.2 cm
Dec. 29 Patchy rain possible
Patchy rain possible
 8° /3° 3 mm 0.5 cm
Dec. 30 Overcast
Overcast
 9° /2° 9.4 mm 0 cm
Dec. 31 Overcast
Overcast
 8° /1° 0.2 mm 0 cm
Next
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.
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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 96.4 mm spread over approximately 16 days. Considering plans for rainy days is advisable.
Will it snow in St. Louis in December 2025?
St. Louis experiences an average snowfall of 2.424 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 ❄️
On average, St. Louis sees 3 snowy days during December, with approximately 2.4 cm of total snowfall.

December rainfall patterns in St. Louis

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

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Location coordinates Where is St. Louis?

Get accurate weather forecasts for St. Louis, located at latitude 38.627 and longitude -90.198. Stay updated with localized weather information tailored for St. Louis.

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