Great Falls Weather in December

During December, Great Falls experiences very low daytime temperatures of 2°C (36°F) and cooler nights around -9°C (16°F). As part of the winter season, some snow/rainfall is to be expected.

Rainfall in Great Falls in December

Climate statistics over the past 30 years suggest around 7 days of snow/rain, with 18 mm (0.7 in) average for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Great Falls in December

In December, Great Falls sees very low temperatures, with highs of 2°C (36°F). Nights drop to around -9°C (16°F). The winter season is characteristic of December. Time outdoors is usually more comfortable with proper winter clothing and protection from wind. With overnight lows of -9°C (16°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold. Expect the coldest temperatures of the year this month. Make sure you have enough winter clothing to stay warm.

Sunshine in Great Falls in December

The month experiences a moderate amount of sunlight, with 108 hours of sunshine. This provides a nice balance between sunshine and clouds.

Wind Speed in Great Falls in December

Average wind conditions reach 5 m/s (10 knots) in December. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.

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

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 Great Falls's climate page.

Great Falls Temperature in December

Min Temperature -9°C (16°F)  

Max Temperature 2°C (36°F)  

Chance of Rain 25%  

Precipitation 18 mm (0.7 in)  

Rainy days 7 days  

Humidity 59%  

Windspeed 5 m/s (10 knots)  

Sunshine 108 hours  

Percentage Sunshine  

What to Wear in Great Falls in December

Dress warmly and in layers for your trip to Great Falls 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. Dry conditions mean you won't need to worry about rain protection. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Great Falls in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

2/10

Walking

2/10

Camping

2/10

Outdoor sports

2/10

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 Great Falls's climate page.

More climate data for Great Falls

Temperature Rainfall Sunshine Humidity Wind Speed

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