New Iberia weather in September: New Iberia, Louisiana: normal highs, lows, rain and records for September
New Iberia in September has a normal high of 89°F and a normal low of 70°F, a daily mean of 80°F, falling from 91°F on the 1st to 86°F by the 30th. Measurable precipitation falls on 11 days in a normal September, 5.05 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 21°C, 128 mm of precipitation in September.
- NOAA stationNew Iberia Acadiana Regional Airport
- Station IDUSW00053915
- Location30.04°N 91.88°W
- Elevation24 ft (7 m)
- Population26,849
- Jan 63° 43°
- Feb 67° 47°
- Mar 73° 53°
- Apr 79° 59°
- May 86° 67°
- Jun 90° 73°
- Jul 92° 74°
- Aug 92° 74°
- Sep 89° 70°
- Oct 82° 60°
- Nov 72° 50°
- Dec 65° 45°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is New Iberia in September?
The normal high is 89°F and the normal low 70°F, for a daily mean of 79.6°F. September is 3.6°F cooler than August and 8.9°F warmer than October. September is the 4th warmest month of the year in New Iberia and the 6th wettest. Across the month the normal high falls 5°F, from 91°F on September 1 to 86°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 78°F and 81°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 44%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 91°F | 73°F | 44% | 28% |
| September 8 | 90°F | 72°F | 41% | 26% |
| September 15 | 89°F | 71°F | 37% | 23% |
| September 22 | 88°F | 69°F | 35% | 22% |
| September 30 | 86°F | 66°F | 32% | 19% |
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 | 73°F | 44% | 28% | 12 h 50 min |
| September 2 | 91°F | 73°F | 44% | 27% | 12 h 50 min |
| September 3 | 91°F | 73°F | 43% | 27% | 12 h 40 min |
| September 4 | 91°F | 73°F | 43% | 27% | 12 h 40 min |
| September 5 | 91°F | 72°F | 42% | 26% | 12 h 40 min |
| September 6 | 91°F | 72°F | 42% | 26% | 12 h 40 min |
| September 7 | 90°F | 72°F | 41% | 26% | 12 h 40 min |
| September 8 | 90°F | 72°F | 41% | 26% | 12 h 40 min |
| September 9 | 90°F | 72°F | 40% | 25% | 12 h 30 min |
| September 10 | 90°F | 72°F | 40% | 25% | 12 h 30 min |
| September 11 | 90°F | 71°F | 39% | 25% | 12 h 30 min |
| September 12 | 90°F | 71°F | 39% | 24% | 12 h 30 min |
| September 13 | 90°F | 71°F | 38% | 24% | 12 h 30 min |
| September 14 | 89°F | 71°F | 38% | 24% | 12 h 20 min |
| September 15 | 89°F | 71°F | 37% | 23% | 12 h 20 min |
| September 16 | 89°F | 70°F | 37% | 23% | 12 h 20 min |
| September 17 | 89°F | 70°F | 36% | 23% | 12 h 20 min |
| September 18 | 89°F | 70°F | 36% | 23% | 12 h 20 min |
| September 19 | 89°F | 70°F | 36% | 22% | 12 h 20 min |
| September 20 | 88°F | 69°F | 36% | 22% | 12 h 10 min |
| September 21 | 88°F | 69°F | 35% | 22% | 12 h 10 min |
| September 22 | 88°F | 69°F | 35% | 22% | 12 h 10 min |
| September 23 | 88°F | 68°F | 35% | 21% | 12 h 10 min |
| September 24 | 88°F | 68°F | 34% | 21% | 12 h 10 min |
| September 25 | 87°F | 68°F | 34% | 21% | 12 h 10 min |
| September 26 | 87°F | 67°F | 33% | 20% | 12 h |
| September 27 | 87°F | 67°F | 33% | 20% | 12 h |
| September 28 | 87°F | 67°F | 33% | 20% | 12 h |
| September 29 | 87°F | 66°F | 33% | 20% | 12 h |
| September 30 | 86°F | 66°F | 32% | 19% | 12 h |
- Normal high
- 89°FSeptember average
- Normal low
- 70°FSeptember average
- Precipitation
- 5.05 inmonth total
- Days with precipitation
- 110.01 inch or more
- Days at 90°F or more
- 16
- 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 USW00053915; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in New Iberia in September?
On a given September day the chance of 0.01 inch or more is 38% on average, highest around September 1 (44%). In all, 5.05 in falls on 11 days of a normal September, 1 of them with an inch or more.
In a normal September in New Iberia, 16 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00053915.
What are the records for September in New Iberia?
The warmest September temperature on this station's record (since 1998) is 100°F, on September 7, 2023; the coldest is 50°F, on September 23, 1999. The wettest September brought 9.77 in (1998).
The September mean against the 1991-2020 normal of 79.6°F: 2021 78.0°F (−1.6), 2022 79.0°F (−0.6), 2023 83.7°F (+4.1), 2024 79.6°F (at normal), 2025 79.6°F (at normal), 2026 81.8°F (+2.2). 2 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 78.0°F | −1.6°F | 9.30 in |
| 2022 | 79.0°F | −0.6°F | 3.20 in |
| 2023 | 83.7°F | +4.1°F | 4.33 in |
| 2024 | 79.6°F | at normal | 5.37 in |
| 2025 | 79.6°F | at normal | 1.00 in |
| 2026 | 81.8°F | +2.2°F | 2.39 in |
Source: records: ACIS, station USW00053915; recent months: ACIS, station USW00053915. Records and recent months use complete months only.
How does September in New Iberia compare across Louisiana?
Across the 65 places PlainClimate covers in Louisiana, September normal highs run from 85°F in Boyce to 90°F in Natchitoches; New Iberia's is 89°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- New Iberia in August92°F by day, 74°F at night
- New Iberia in October82°F by day, 60°F at night
- New Iberia through the yearEvery month, frost dates, records and recent years
- Louisiana in SeptemberThe statewide normal and the warmest and coolest places
- Natchitoches: Louisiana's warmest Septembernormal high 90°F