Fort Pierce Weather in September
Fort Pierce in September averages 31°C (88°F) during the day and 23°C (73°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Fort Pierce in September
On average, there are about 19 days with rain during this month, averaging 153 mm (6 in). This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Fort Pierce in September
Fort Pierce in September gets highs of 31°C (88°F) during the day and drops to 23°C (73°F) at night. It's usually most comfortable outside during the morning and later in the day. With overnight lows of 23°C (73°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.If you prefer dry days with pleasant temperatures, January, February, March, April, November and December typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Fort Pierce's climate page.
Fort Pierce Temperature in September
Min Temperature
23°C (73°F)
Max Temperature
31°C (88°F)
Chance of Rain
64%
Precipitation
153 mm (6 in)
Rainy days
19 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Fort Pierce typically stay consistent throughout September, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Fort Pierce in September
Browse day-by-day weather records for Fort Pierce spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Fort Pierce historical weather extremes in September
According to our 28 years of weather records for Fort Pierce, the following extremes were recorded between 1997 and 2025.
- Fort Pierce recorded its highest September temperature of 35°C (95°F) on September 30, 1998.
- The lowest daytime temperature in September was 25°C (77°F), recorded on September 29, 2001.
- The coldest night in September in Fort Pierce was on September 29, 2006, with a minimum of 17°C (63°F).
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
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tolerable
unpleasant
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What to Wear in Fort Pierce 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. Heavy rain is guaranteed, please bring a good poncho and waterproof everything!What To Do in Fort Pierce in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Fort Pierce's climate page.
See the full Fort Pierce climate overview or explore weather in the United States of America.
