Saint Marys
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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.

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).

Saint Marys Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Saint Marys - and find the best time to visit.

Best Places in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

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

Saint Marys 3-Day Forecast

Popular in September

Where to go in September - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.