Saint Marys Weather in December

December in Saint Marys typically sees daytime highs of 20°C (68°F) and nighttime lows of 9°C (48°F). Rainfall is also possible this month, so it's worth packing an umbrella. It falls within the winter season.

Rainfall in Saint Marys in December

Historically, approximately 8 days this month are expected to have rain, averaging 64 mm (2.5 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Saint Marys in December

Saint Marys in December has perfect weather. Days reach 20°C (68°F) and nights cool to 9°C (48°F). December is part of the winter season. Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights fall to 9°C (48°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Saint Marys in December

With about 181 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

If you favor pleasant temperatures and minimal rainfall, December is one of the best months to visit Saint Marys.

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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 Saint Marys's climate page.

Saint Marys Temperature in December

Min Temperature 9°C (48°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 28%  

Precipitation 64 mm (2.5 in)  

Rainy days 8 days  

Humidity 76% *  

Sunshine 181 hours *  

Percentage Sunshine 58% *  

* Data from: Jacksonville, the United States of America (29 KM, 18 Miles).

What to Wear in Saint Marys in December

For Saint Marys in December, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Saint Marys in December

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

Swimming

6/10

Cycling

10/10

Walking

10/10

Barbeque

7/10

Camping

4/10

Outdoor sports

10/10

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 Saint Marys's climate page.

More climate data for Saint Marys

Temperature Rainfall Sunshine Humidity

See the full Saint Marys climate overview or explore weather in the United States of America.