Fort Myers weather in September: Fort Myers, Florida: normal highs, lows, rain and records for September
Fort Myers in September has a normal high of 90°F and a normal low of 74°F, a daily mean of 82°F, falling from 91°F on the 1st to 89°F by the 30th. Measurable precipitation falls on 16 days in a normal September, 9.00 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 24°C, 229 mm of precipitation in September.
- NOAA stationFort Myers Page Field Airport
- Station IDUSW00012835
- Location26.59°N 81.86°W
- Elevation15 ft (5 m)
- From the center3 miles
- Population99,918
- Jan 75° 54°
- Feb 78° 57°
- Mar 81° 60°
- Apr 85° 64°
- May 90° 69°
- Jun 91° 74°
- Jul 92° 75°
- Aug 92° 75°
- Sep 90° 74°
- Oct 87° 69°
- Nov 81° 62°
- Dec 77° 57°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Fort Myers in September?
The normal high is 90°F and the normal low 74°F, for a daily mean of 82.2°F. September is 1.2°F cooler than August and 4.2°F warmer than October. September is the 4th warmest month of the year in Fort Myers and the 4th wettest. Across the month the normal high falls 2°F, from 91°F on September 1 to 89°F on September 30. From one year to the next September's mean temperature typically moves about 0.8°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 81°F and 83°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 57%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 91°F | 75°F | 57% | 41% |
| September 8 | 91°F | 75°F | 55% | 39% |
| September 15 | 90°F | 75°F | 52% | 36% |
| September 22 | 90°F | 74°F | 47% | 32% |
| September 30 | 89°F | 73°F | 41% | 26% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 91°F | 75°F | 57% | 41% | 12 h 40 min |
| September 2 | 91°F | 75°F | 56% | 41% | 12 h 40 min |
| September 3 | 91°F | 75°F | 56% | 41% | 12 h 40 min |
| September 4 | 91°F | 75°F | 56% | 41% | 12 h 40 min |
| September 5 | 91°F | 75°F | 56% | 40% | 12 h 40 min |
| September 6 | 91°F | 75°F | 56% | 40% | 12 h 30 min |
| September 7 | 91°F | 75°F | 55% | 40% | 12 h 30 min |
| September 8 | 91°F | 75°F | 55% | 39% | 12 h 30 min |
| September 9 | 90°F | 75°F | 55% | 39% | 12 h 30 min |
| September 10 | 90°F | 75°F | 54% | 39% | 12 h 30 min |
| September 11 | 90°F | 75°F | 54% | 38% | 12 h 30 min |
| September 12 | 90°F | 75°F | 53% | 38% | 12 h 30 min |
| September 13 | 90°F | 75°F | 53% | 37% | 12 h 20 min |
| September 14 | 90°F | 75°F | 52% | 37% | 12 h 20 min |
| September 15 | 90°F | 75°F | 52% | 36% | 12 h 20 min |
| September 16 | 90°F | 74°F | 51% | 36% | 12 h 20 min |
| September 17 | 90°F | 74°F | 51% | 35% | 12 h 20 min |
| September 18 | 90°F | 74°F | 50% | 35% | 12 h 20 min |
| September 19 | 90°F | 74°F | 50% | 34% | 12 h 10 min |
| September 20 | 90°F | 74°F | 49% | 33% | 12 h 10 min |
| September 21 | 90°F | 74°F | 48% | 33% | 12 h 10 min |
| September 22 | 90°F | 74°F | 47% | 32% | 12 h 10 min |
| September 23 | 90°F | 74°F | 47% | 31% | 12 h 10 min |
| September 24 | 90°F | 74°F | 46% | 30% | 12 h 10 min |
| September 25 | 89°F | 74°F | 45% | 30% | 12 h 10 min |
| September 26 | 89°F | 74°F | 44% | 29% | 12 h |
| September 27 | 89°F | 74°F | 43% | 28% | 12 h |
| September 28 | 89°F | 73°F | 42% | 28% | 12 h |
| September 29 | 89°F | 73°F | 42% | 27% | 12 h |
| September 30 | 89°F | 73°F | 41% | 26% | 12 h |
- Normal high
- 90°FSeptember average
- Normal low
- 74°FSeptember average
- Precipitation
- 9.00 inmonth total
- Days with precipitation
- 160.01 inch or more
- Days at 90°F or more
- 20
- Daylight
- 12 h 40 min to 12 hSeptember 1 to September 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 29
- Sunshine
- 78%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00012835; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Fort Myers in September?
On a given September day the chance of 0.01 inch or more is 50% on average, highest around September 1 (57%). In all, 9.00 in falls on 16 days of a normal September, 3 of them with an inch or more.
In a normal September in Fort Myers, 20 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00012835.
How humid and windy is Fort Myers in September?
At 3 p.m. the normal temperature is 86°F with 61% relative humidity and a dew point of 71°F; at 6 a.m. it is 74°F with 93% humidity. The wind averages 6.7 mph, most often from the east in the afternoon. A dew point of 65°F or more feels muggy to most people.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 74°F | 72°F | 93% | 4.5 mph | 80% |
| 9 a.m. | 80°F | 73°F | 78% | 7.8 mph | 70% |
| noon | 86°F | 72°F | 63% | 8.7 mph | 45% |
| 3 p.m. | 86°F | 71°F | 61% | 9.3 mph | 45% |
| 6 p.m. | 82°F | 71°F | 71% | 7.7 mph | 62% |
| 9 p.m. | 78°F | 72°F | 82% | 5.8 mph | 72% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00012835. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for September in Fort Myers?
The warmest September temperature on Fort Myers's official record (since 1892) is 98°F, on September 3, 1912; the coldest is 63°F, on September 23, 1922. The wettest September brought 17.35 in (1922).
The September mean against the 1991-2020 normal of 82.2°F: 2021 83.3°F (+1.1), 2022 83.8°F (+1.6), 2023 83.7°F (+1.5), 2024 84.4°F (+2.2), 2025 82.6°F (+0.4), 2026 82.3°F (at normal). 5 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 83.3°F | +1.1°F | 9.03 in |
| 2022 | 83.8°F | +1.6°F | 13.92 in |
| 2023 | 83.7°F | +1.5°F | 7.15 in |
| 2024 | 84.4°F | +2.2°F | 10.84 in |
| 2025 | 82.6°F | +0.4°F | 6.56 in |
| 2026 | 82.3°F | at normal | 5.63 in |
Source: records: ACIS, NWS threaded record FMYthr; recent months: ACIS, station USW00012835. Records and recent months use complete months only.
How does September in Fort Myers compare across Florida?
Across the 106 places PlainClimate covers in Florida, September normal highs run from 86°F in Jacksonville Beach to 92°F in Plant City; Fort Myers's is 90°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Fort Myers in August92°F by day, 75°F at night
- Fort Myers in October87°F by day, 69°F at night
- Fort Myers through the yearEvery month, frost dates, records and recent years
- Florida in SeptemberThe statewide normal and the warmest and coolest places
- Plant City: Florida's warmest Septembernormal high 92°F