Arco Weather in December

What's the weather like in Arco (Idaho) in December 2024?

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

December is in the winter in Arco and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a freezing -0°C (32°F), whilst at night -11°C (12°F) is normal.

Arco weather averages (imperial / metric)
Daytime temperature	-0.3°C 31.6°F
Nightly temperature	-11.2°C 11.9°F
Average temperature	-5.7°C 21.7°F
Daily sunshine	4.1 hrs
Avg rainfall	25 mm 1 ins
Rainy days	12 days
Sea temperature	10°C 50°F
Humidity	75%
Windspeed	15.1kph 9 mph

On average December is the 3rd wettest month of the year in Arco with around 25mm 1 inches of rain making it a dry time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.

On the flip side this corresponds to an average of 4.1 hours of sunshine per day.

December temperatures in Arco

December rainfall

December hourly sunshine

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 Arco 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

Arco weather stats

Arco weather statistics
Hottest month:	July	28.3°C 82.9°F
Driest month:	October	16mm 0.6ins
Sunniest month:	July	13hrs
Coldest month:	January	-1.6°C 29.1°F
Wettest month:	June	33mm 1.3ins

Map showing location of Arco (43.63657, -113.30028)