St. Louis Weather in December

December in St. Louis sees daytime temperatures around 7°C (45°F) and lows of -2°C (28°F) at night. With around 96 mm (3.8 in) of snow/rainfall expected, it's worth packing a rain jacket.

Rainfall in St. Louis in December

Expect around 11 days of snow/rain based on historical data, with 96 mm (3.8 in) average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in St. Louis in December

In December, expect low temperatures in St. Louis, with highs of 7°C (45°F) and lows of -2°C (28°F) at night. Winter occurs in December. Cold conditions persist throughout the day, so warm clothing is important from the moment you head outside. Nights drop below freezing to -2°C (28°F). An extra blanket is worth packing if you're unsure about the heating where you're staying.

Sunshine in St. Louis in December

The area experiences a moderate amount of sunshine, with approximately 128 hours of sunlight expected. This means a decent mix of sun and overcast.

December in St. Louis can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our St. Louis's climate page.

St. Louis Temperature in December

Min Temperature -2°C (28°F)  

Max Temperature 7°C (45°F)  

Chance of Rain 37%  

Precipitation 96 mm (3.8 in)  

Rainy days 11 days  

Humidity 74%  

Sunshine 128 hours  

Percentage Sunshine 44%  

What to Wear in St. Louis in December

We recommend to layer up for chilly conditions in St. Louis in December. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in St. Louis in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

4/10

Walking

4/10

Camping

1/10

Outdoor sports

4/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our St. Louis's climate page.

More climate data for St. Louis

Temperature Rainfall Sunshine Humidity

See the full St. Louis climate overview or explore weather in the United States of America.