St. Charles Weather in December
December in St. Charles brings low temperatures, with daytime highs of 7°C (45°F) and nights around -3°C (27°F). Quite a bit of snow/rainfall is expected, around 100 mm (3.9 in), so pack an umbrella.
Rainfall in St. Charles in December
Based on our climate data of the past 30 years, about 11 days of snow/rain are anticipated, with 100 mm (3.9 in) on average. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in St. Charles in December
Daytime highs in St. Charles in December reach 7°C (45°F), with nights around -3°C (27°F). December is typically considered a winter month. It stays cool throughout the day, so warm layers are a good idea from morning to evening. With overnight lows of -3°C (27°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold.
Sunshine in St. Charles in December
The month experiences a moderate amount of sunlight, with 128 hours of sunshine. This provides a nice balance between sunshine and clouds.December in St. Charles has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our St. Charles's climate page.
St. Charles Temperature in December
Min Temperature
-3°C (27°F)
Max Temperature
7°C (45°F)
Chance of Rain
35%
Precipitation
100 mm (3.9 in)
Rainy days
11 days
Humidity
74% *
Sunshine
128 hours *
Percentage Sunshine
44% *
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
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What to Wear in St. Charles in December
Cold weather calls for smart layering in December. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Prepare for significant rainfall with proper waterproof clothing and shoes. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in St. Charles in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our St. Charles's climate page.
Temperature Rainfall Sunshine Humidity
See the full St. Charles climate overview or explore weather in the United States of America.
