Jacksonville Beach weather in September: Jacksonville Beach, Florida: normal highs, lows, rain and records for September
Jacksonville Beach in September has a normal high of 86°F and a normal low of 76°F, a daily mean of 81°F, falling from 88°F on the 1st to 84°F by the 30th. Measurable precipitation falls on 13 days in a normal September, 7.19 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 24°C, 183 mm of precipitation in September.
- NOAA stationJacksonville Beach
- Station IDUSC00084366
- Location30.29°N 81.39°W
- Elevation10 ft (3 m)
- From the center1 miles
- Population23,630
- Jan 65° 49°
- Feb 68° 52°
- Mar 72° 57°
- Apr 77° 63°
- May 83° 70°
- Jun 87° 75°
- Jul 89° 77°
- Aug 89° 77°
- Sep 86° 76°
- Oct 80° 69°
- Nov 73° 60°
- Dec 67° 53°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Jacksonville Beach in September?
The normal high is 86°F and the normal low 76°F, for a daily mean of 80.8°F. September is 2.0°F cooler than August and 6.1°F warmer than October. September is the 4th warmest month of the year in Jacksonville Beach and the 2nd wettest. Across the month the normal high falls 4°F, from 88°F on September 1 to 84°F on September 30. From one year to the next September's mean temperature typically moves about 1.2°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 80°F and 82°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 46%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 88°F | 77°F | 46% | 32% |
| September 8 | 87°F | 76°F | 45% | 31% |
| September 15 | 86°F | 76°F | 44% | 31% |
| September 22 | 85°F | 75°F | 42% | 30% |
| September 30 | 84°F | 74°F | 39% | 28% |
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 | 88°F | 77°F | 46% | 32% | 12 h 50 min |
| September 2 | 87°F | 77°F | 46% | 32% | 12 h 50 min |
| September 3 | 87°F | 77°F | 46% | 32% | 12 h 40 min |
| September 4 | 87°F | 77°F | 45% | 32% | 12 h 40 min |
| September 5 | 87°F | 77°F | 45% | 32% | 12 h 40 min |
| September 6 | 87°F | 77°F | 45% | 32% | 12 h 40 min |
| September 7 | 87°F | 77°F | 45% | 31% | 12 h 40 min |
| September 8 | 87°F | 76°F | 45% | 31% | 12 h 40 min |
| September 9 | 87°F | 76°F | 45% | 31% | 12 h 30 min |
| September 10 | 87°F | 76°F | 45% | 31% | 12 h 30 min |
| September 11 | 87°F | 76°F | 44% | 31% | 12 h 30 min |
| September 12 | 86°F | 76°F | 44% | 31% | 12 h 30 min |
| September 13 | 86°F | 76°F | 44% | 31% | 12 h 30 min |
| September 14 | 86°F | 76°F | 44% | 31% | 12 h 30 min |
| September 15 | 86°F | 76°F | 44% | 31% | 12 h 20 min |
| September 16 | 86°F | 76°F | 43% | 31% | 12 h 20 min |
| September 17 | 86°F | 76°F | 43% | 31% | 12 h 20 min |
| September 18 | 86°F | 76°F | 43% | 31% | 12 h 20 min |
| September 19 | 86°F | 75°F | 43% | 30% | 12 h 20 min |
| September 20 | 85°F | 75°F | 43% | 30% | 12 h 10 min |
| September 21 | 85°F | 75°F | 42% | 30% | 12 h 10 min |
| September 22 | 85°F | 75°F | 42% | 30% | 12 h 10 min |
| September 23 | 85°F | 75°F | 42% | 30% | 12 h 10 min |
| September 24 | 85°F | 75°F | 41% | 29% | 12 h 10 min |
| September 25 | 85°F | 75°F | 41% | 29% | 12 h 10 min |
| September 26 | 85°F | 74°F | 41% | 29% | 12 h |
| September 27 | 84°F | 74°F | 40% | 29% | 12 h |
| September 28 | 84°F | 74°F | 40% | 28% | 12 h |
| September 29 | 84°F | 74°F | 39% | 28% | 12 h |
| September 30 | 84°F | 74°F | 39% | 28% | 12 h |
- Normal high
- 86°FSeptember average
- Normal low
- 76°FSeptember average
- Precipitation
- 7.19 inmonth total
- Days with precipitation
- 130.01 inch or more
- Days at 90°F or more
- 3
- Daylight
- 12 h 50 min to 12 hSeptember 1 to September 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 28
- Sunshine
- 78%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00084366; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Jacksonville Beach in September?
On a given September day the chance of 0.01 inch or more is 43% on average, highest around September 1 (46%). In all, 7.19 in falls on 13 days of a normal September, 2 of them with an inch or more.
In a normal September in Jacksonville Beach, 3 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00084366.
What are the records for September in Jacksonville Beach?
The warmest September temperature on this station's record (since 1944) is 98°F, on September 5, 1944; the coldest is 53°F, on September 27, 1956. The wettest September brought 24.35 in (1979).
The September mean against the 1991-2020 normal of 80.8°F: 2021 82.0°F (+1.2), 2022 81.2°F (+0.4), 2023 80.7°F (−0.1), 2024 81.4°F (+0.6), 2025 79.6°F (−1.2), 2026 79.8°F (−1.0). 3 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 82.0°F | +1.2°F | 8.61 in |
| 2022 | 81.2°F | +0.4°F | 9.86 in |
| 2023 | 80.7°F | −0.1°F | 4.34 in |
| 2024 | 81.4°F | +0.6°F | 10.99 in |
| 2025 | 79.6°F | −1.2°F | 5.02 in |
| 2026 | 79.8°F | −1.0°F | 2.78 in |
Source: records: ACIS, station USC00084366; recent months: ACIS, station USC00084366. Records and recent months use complete months only.
How does September in Jacksonville Beach 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; Jacksonville Beach's is 86°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Jacksonville Beach in August89°F by day, 77°F at night
- Jacksonville Beach in October80°F by day, 69°F at night
- Jacksonville Beach 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