Saint Marys Weather in September

September in Saint Marys brings very high temperatures, with daytime highs of 30°C (86°F) and nights around 22°C (72°F). Quite a bit of rainfall is expected, around 142 mm (5.6 in), so pack an umbrella.

Rainfall in Saint Marys in September

Past climate data indicates that roughly 14 days will see rain, totalling around 142 mm (5.6 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Saint Marys in September

Daytime highs in Saint Marys in September reach 30°C (86°F), with nights around 22°C (72°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. Nights remain mild at 22°C (72°F), making evenings a pleasant time to be outdoors.

Sunshine in Saint Marys in September

With approximately 231 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

September in Saint Marys can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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.

Saint Marys Temperature in September

Min Temperature 22°C (72°F)  

Max Temperature 30°C (86°F)  

Chance of Rain 47%  

Precipitation 142 mm (5.6 in)  

Rainy days 14 days  

Humidity 81% *  

Sunshine 231 hours *  

Percentage Sunshine 62% *  

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

What to Wear in Saint Marys in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Saint Marys in September

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

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

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.