Deadwood Weather in December

What's the weather like in Deadwood (South Dakota) in December 2025?

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

December is in the winter in Deadwood and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a freezing 1°C (34°F), whilst at night -11°C (12°F) is normal.

Deadwood weather averages (imperial / metric)
Daytime temperature 1°C 33.7°F
Nightly temperature -11.2°C 11.9°F
Average temperature -5.1°C 22.8°F
Daily sunshine 5.5 hrs
Avg rainfall 13 mm 0.5 ins
Rainy days 8 days
Sea temperature 8.8°C 47.8°F
Humidity 66%
Windspeed 19.1kph 12 mph

On average December is the 2nd driest month of the year in Deadwood with around 13mm 0.5 inches of rain making it a dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 5.5 hours of sunshine per day.

December temperatures in Deadwood

Deadwood average temperature in December

December rainfall

Deadwood average rain in December

December hourly sunshine

Deadwood 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 Deadwood in December 2025.

Other monthly averages

Best places to visit in December

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Deadwood weather stats

Deadwood weather statistics
Hottest month: July 29°C 84.2°F
Driest month: January 10mm 0.4ins
Sunniest month: August 11hrs
Coldest month: January -0.4°C 31.3°F
Wettest month: June 76mm 3ins
Map showing location of Deadwood (44.37665, -103.72964) Deadwood map pin © Google

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