Alton Weather in December

In Alton, December brings low daytime temperatures around 7°C (45°F), with nights cooling to -2°C (28°F). Expect quite a bit of snow/rainfall this month.

Rainfall in Alton in December

Typically around 10 days of snow/rainfall are expected, averaging 89 mm (3.5 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Alton in December

Daytime temperatures in Alton reach 7°C (45°F) in December, dropping to -2°C (28°F) at night. The month of December belongs to the winter season. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. 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 Alton 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.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Alton. Our weather planner can help you explore destinations with more pleasant weather conditions.

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

Alton Temperature in December

Min Temperature -2°C (28°F)  

Max Temperature 7°C (45°F)  

Chance of Rain 34%  

Precipitation 89 mm (3.5 in)  

Rainy days 10 days  

Humidity 74% *  

Sunshine 128 hours *  

Percentage Sunshine 44% *  

* Data from: St. Louis, the United States of America (29 KM, 18 Miles).

What to Wear in Alton in December

Dress warmly and in layers for your trip to Alton in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Expect heavy rainfall, so bring good rain protection and waterproof bags. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Alton 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 Alton's climate page.

More climate data for Alton

Temperature Rainfall Sunshine Humidity

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