Petersburg Weather in December

What's the weather like in Petersburg (Illinois) in December 2024?

The climate in Petersburg during December can be summarized as cold and reasonably dry.

December is in the winter in Petersburg and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a freezing 3°C (37°F), whilst at night -6°C (21°F) is normal.

Petersburg weather averages (imperial / metric)
Daytime temperature 2.7°C 36.8°F
Nightly temperature -6.3°C 20.8°F
Average temperature -1.8°C 28.8°F
Daily sunshine 4.5 hrs
Avg rainfall 64 mm 2.5 ins
Rainy days 10 days
Sea temperature 9.5°C 49°F
Humidity 77%
Windspeed 19.4kph 12 mph

On average December is the 3rd driest month of the year in Petersburg with around 64mm 2.5 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 4.5 hours of sunshine per day.

December temperatures in Petersburg

Petersburg average temperature in December

December rainfall

Petersburg average rain in December

December hourly sunshine

Petersburg average rain in December

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Petersburg in December 2024.

Other monthly averages

Best places to visit in December

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Petersburg weather stats

Petersburg weather statistics
Hottest month: July 30.2°C 86.4°F
Driest month: January 39mm 1.5ins
Sunniest month: July 10.9hrs
Coldest month: January -0.2°C 31.6°F
Wettest month: May 106mm 4.2ins
Map showing location of Petersburg (40.01172, -89.84817) Petersburg map pin © Google

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