Alton
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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.

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).

Alton Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Alton - and find the best time to visit.

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 →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

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

Alton 3-Day Forecast

Popular in December

Where to go in December - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.