Marco Island weather in September: Marco Island, Florida: normal highs, lows, rain and records for September
Marco Island in September has a normal high of 90°F and a normal low of 75°F, a daily mean of 83°F, falling from 91°F on the 1st to 89°F by the 30th. Measurable precipitation falls on 18 days in a normal September, 9.92 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 24°C, 252 mm of precipitation in September.
- NOAA stationMarco Island
- Station IDUSC00085359
- Location25.95°N 81.71°W
- Elevation10 ft (3 m)
- From the center1 miles
- Population16,554
- Jan 74° 55°
- Feb 76° 57°
- Mar 79° 60°
- Apr 83° 65°
- May 88° 70°
- Jun 90° 74°
- Jul 91° 76°
- Aug 92° 76°
- Sep 90° 75°
- Oct 87° 71°
- Nov 81° 63°
- Dec 77° 59°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Marco Island in September?
The normal high is 90°F and the normal low 75°F, for a daily mean of 82.6°F. September is 1.2°F cooler than August and 3.8°F warmer than October. September is the 3rd warmest month of the year in Marco Island and the 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 0.7°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 82°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 62%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 91°F | 76°F | 62% | 43% |
| September 8 | 91°F | 76°F | 60% | 42% |
| September 15 | 90°F | 75°F | 56% | 39% |
| September 22 | 90°F | 75°F | 51% | 35% |
| September 30 | 89°F | 74°F | 45% | 30% |
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 | 76°F | 62% | 43% | 12 h 40 min |
| September 2 | 91°F | 76°F | 62% | 43% | 12 h 40 min |
| September 3 | 91°F | 76°F | 62% | 43% | 12 h 40 min |
| September 4 | 91°F | 76°F | 62% | 43% | 12 h 40 min |
| September 5 | 91°F | 76°F | 61% | 42% | 12 h 40 min |
| September 6 | 91°F | 76°F | 61% | 42% | 12 h 30 min |
| September 7 | 91°F | 76°F | 61% | 42% | 12 h 30 min |
| September 8 | 91°F | 76°F | 60% | 42% | 12 h 30 min |
| September 9 | 90°F | 76°F | 60% | 41% | 12 h 30 min |
| September 10 | 90°F | 76°F | 59% | 41% | 12 h 30 min |
| September 11 | 90°F | 76°F | 59% | 41% | 12 h 30 min |
| September 12 | 90°F | 76°F | 58% | 40% | 12 h 20 min |
| September 13 | 90°F | 76°F | 58% | 40% | 12 h 20 min |
| September 14 | 90°F | 75°F | 57% | 39% | 12 h 20 min |
| September 15 | 90°F | 75°F | 56% | 39% | 12 h 20 min |
| September 16 | 90°F | 75°F | 56% | 38% | 12 h 20 min |
| September 17 | 90°F | 75°F | 55% | 37% | 12 h 20 min |
| September 18 | 90°F | 75°F | 54% | 37% | 12 h 20 min |
| September 19 | 90°F | 75°F | 54% | 36% | 12 h 10 min |
| September 20 | 90°F | 75°F | 53% | 36% | 12 h 10 min |
| September 21 | 90°F | 75°F | 52% | 35% | 12 h 10 min |
| September 22 | 90°F | 75°F | 51% | 35% | 12 h 10 min |
| September 23 | 90°F | 75°F | 51% | 34% | 12 h 10 min |
| September 24 | 90°F | 75°F | 50% | 34% | 12 h 10 min |
| September 25 | 89°F | 74°F | 49% | 33% | 12 h 10 min |
| September 26 | 89°F | 74°F | 48% | 32% | 12 h |
| September 27 | 89°F | 74°F | 47% | 32% | 12 h |
| September 28 | 89°F | 74°F | 46% | 31% | 12 h |
| September 29 | 89°F | 74°F | 45% | 30% | 12 h |
| September 30 | 89°F | 74°F | 45% | 30% | 12 h |
- Normal high
- 90°FSeptember average
- Normal low
- 75°FSeptember average
- Precipitation
- 9.92 inmonth total
- Days with precipitation
- 180.01 inch or more
- Days at 90°F or more
- 15
- 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
- 30
- Sunshine
- 79%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00085359; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Marco Island in September?
On a given September day the chance of 0.01 inch or more is 55% on average, highest around September 1 (62%). In all, 9.92 in falls on 18 days of a normal September, 3 of them with an inch or more.
In a normal September in Marco Island, 15 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00085359.
What are the records for September in Marco Island?
The warmest September temperature on this station's record (since 2002) is 96°F, on September 6, 2020; the coldest is 65°F, on September 30, 2022. The wettest September brought 18.36 in (2003).
The September mean against the 1991-2020 normal of 82.6°F: 2021 82.5°F (−0.1), 2022 83.1°F (+0.5), 2023 83.2°F (+0.6), 2024 83.8°F (+1.2), 2025 81.4°F (−1.2), 2026 82.4°F (−0.2). 3 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 82.5°F | −0.1°F | 10.95 in |
| 2022 | 83.1°F | +0.5°F | 8.00 in |
| 2023 | 83.2°F | +0.6°F | 3.83 in |
| 2024 | 83.8°F | +1.2°F | 10.11 in |
| 2025 | 81.4°F | −1.2°F | 10.79 in |
| 2026 | 82.4°F | −0.2°F | 3.41 in |
Source: records: ACIS, station USC00085359; recent months: ACIS, station USC00085359. Records and recent months use complete months only.
How does September in Marco Island 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; Marco Island's is 90°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Marco Island in August92°F by day, 76°F at night
- Marco Island in October87°F by day, 71°F at night
- Marco Island 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