Hattiesburg weather in September: Hattiesburg, Mississippi: normal highs, lows, rain and records for September
Hattiesburg in September has a normal high of 88°F and a normal low of 67°F, a daily mean of 77°F, falling from 91°F on the 1st to 85°F by the 30th. Measurable precipitation falls on 9 days in a normal September, 4.15 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 31°C and low of 19°C, 105 mm of precipitation in September.
- NOAA stationHattiesburg Chain Municipal Airport
- Station IDUSW00013833
- Location31.28°N 89.25°W
- Elevation151 ft (46 m)
- From the center4 miles
- Population48,522
- Jan 60° 38°
- Feb 65° 42°
- Mar 72° 48°
- Apr 78° 54°
- May 85° 62°
- Jun 90° 70°
- Jul 92° 72°
- Aug 92° 72°
- Sep 88° 67°
- Oct 80° 55°
- Nov 69° 44°
- Dec 62° 41°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Hattiesburg in September?
The normal high is 88°F and the normal low 67°F, for a daily mean of 77.4°F. September is 4.4°F cooler than August and 10.1°F warmer than October. September is the 4th warmest month of the year in Hattiesburg and the 10th wettest. Across the month the normal high falls 6°F, from 91°F on September 1 to 85°F on September 30. From one year to the next September's mean temperature typically moves about 1.8°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 76°F and 79°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 34%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 91°F | 70°F | 34% | 23% |
| September 8 | 90°F | 69°F | 32% | 21% |
| September 15 | 88°F | 67°F | 29% | 20% |
| September 22 | 87°F | 65°F | 27% | 18% |
| September 30 | 85°F | 62°F | 25% | 15% |
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 | 70°F | 34% | 23% | 12 h 50 min |
| September 2 | 90°F | 70°F | 34% | 23% | 12 h 50 min |
| September 3 | 90°F | 70°F | 34% | 22% | 12 h 50 min |
| September 4 | 90°F | 70°F | 33% | 22% | 12 h 40 min |
| September 5 | 90°F | 70°F | 33% | 22% | 12 h 40 min |
| September 6 | 90°F | 69°F | 32% | 22% | 12 h 40 min |
| September 7 | 90°F | 69°F | 32% | 21% | 12 h 40 min |
| September 8 | 90°F | 69°F | 32% | 21% | 12 h 40 min |
| September 9 | 89°F | 69°F | 31% | 21% | 12 h 40 min |
| September 10 | 89°F | 69°F | 31% | 21% | 12 h 30 min |
| September 11 | 89°F | 68°F | 31% | 21% | 12 h 30 min |
| September 12 | 89°F | 68°F | 30% | 20% | 12 h 30 min |
| September 13 | 89°F | 68°F | 30% | 20% | 12 h 30 min |
| September 14 | 89°F | 68°F | 30% | 20% | 12 h 30 min |
| September 15 | 88°F | 67°F | 29% | 20% | 12 h 20 min |
| September 16 | 88°F | 67°F | 29% | 19% | 12 h 20 min |
| September 17 | 88°F | 67°F | 29% | 19% | 12 h 20 min |
| September 18 | 88°F | 67°F | 28% | 19% | 12 h 20 min |
| September 19 | 88°F | 66°F | 28% | 19% | 12 h 20 min |
| September 20 | 87°F | 66°F | 28% | 18% | 12 h 10 min |
| September 21 | 87°F | 66°F | 28% | 18% | 12 h 10 min |
| September 22 | 87°F | 65°F | 27% | 18% | 12 h 10 min |
| September 23 | 87°F | 65°F | 27% | 17% | 12 h 10 min |
| September 24 | 86°F | 65°F | 27% | 17% | 12 h 10 min |
| September 25 | 86°F | 64°F | 26% | 17% | 12 h 10 min |
| September 26 | 86°F | 64°F | 26% | 16% | 12 h |
| September 27 | 86°F | 64°F | 26% | 16% | 12 h |
| September 28 | 85°F | 63°F | 25% | 15% | 12 h |
| September 29 | 85°F | 63°F | 25% | 15% | 12 h |
| September 30 | 85°F | 62°F | 25% | 15% | 12 h |
- Normal high
- 88°FSeptember average
- Normal low
- 67°FSeptember average
- Precipitation
- 4.15 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 15
- 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
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013833; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Hattiesburg in September?
On a given September day the chance of 0.01 inch or more is 29% on average, highest around September 1 (34%). In all, 4.15 in falls on 9 days of a normal September, 1 of them with an inch or more.
In a normal September in Hattiesburg, 15 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013833.
What are the records for September in Hattiesburg?
The warmest September temperature on Hattiesburg's official record (since 1893) is 103°F, on September 23, 1925; the coldest is 40°F, on September 30, 1895. The wettest September brought 14.81 in (1957).
The September mean against the 1991-2020 normal of 77.4°F: 2021 76.5°F (−0.9), 2022 76.6°F (−0.8), 2023 81.2°F (+3.8), 2024 79.3°F (+1.9), 2025 80.4°F (+3.0), 2026 82.0°F (+4.6). 4 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 76.5°F | −0.9°F | 7.30 in |
| 2022 | 76.6°F | −0.8°F | 0.86 in |
| 2023 | 81.2°F | +3.8°F | 1.54 in |
| 2024 | 79.3°F | +1.9°F | 3.14 in |
| 2025 | 80.4°F | +3.0°F | 0.62 in |
| 2026 | 82.0°F | +4.6°F | 1.17 in |
Source: records: ACIS, NWS threaded record HBGthr; recent months: ACIS, station USW00013833. Records and recent months use complete months only.
How does September in Hattiesburg compare across Mississippi?
Across the 81 places PlainClimate covers in Mississippi, September normal highs run from 83°F in Holly Springs to 91°F in Monticello; Hattiesburg's is 88°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Hattiesburg in August92°F by day, 72°F at night
- Hattiesburg in October80°F by day, 55°F at night
- Hattiesburg through the yearEvery month, frost dates, records and recent years
- Mississippi in SeptemberThe statewide normal and the warmest and coolest places
- Monticello: Mississippi's warmest Septembernormal high 91°F