Birmingham weather in September: Birmingham, Alabama: normal highs, lows, rain and records for September
Birmingham in September has a normal high of 86°F and a normal low of 65°F, a daily mean of 76°F, falling from 89°F on the 1st to 82°F by the 30th. Measurable precipitation falls on 7 days in a normal September, 4.00 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 19°C, 102 mm of precipitation in September.
- NOAA stationBirmingham Airport
- Station IDUSW00013876
- Location33.57°N 86.75°W
- Elevation615 ft (188 m)
- From the center4 miles
- Population196,357
- Jan 55° 35°
- Feb 59° 38°
- Mar 67° 45°
- Apr 75° 52°
- May 82° 61°
- Jun 88° 69°
- Jul 91° 72°
- Aug 91° 71°
- Sep 86° 65°
- Oct 76° 54°
- Nov 65° 43°
- Dec 57° 38°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Birmingham in September?
The normal high is 86°F and the normal low 65°F, for a daily mean of 75.6°F. September is 5.3°F cooler than August and 10.7°F warmer than October. September is the 4th warmest month of the year in Birmingham and the 11th wettest. Across the month the normal high falls 7°F, from 89°F on September 1 to 82°F on September 30. From one year to the next September's mean temperature typically moves about 2.7°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 73°F and 78°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 28%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 89°F | 69°F | 28% | 18% |
| September 8 | 88°F | 68°F | 26% | 16% |
| September 15 | 86°F | 66°F | 25% | 15% |
| September 22 | 84°F | 64°F | 24% | 15% |
| September 30 | 82°F | 61°F | 23% | 14% |
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 | 89°F | 69°F | 28% | 18% | 12 h 50 min |
| September 2 | 89°F | 69°F | 28% | 18% | 12 h 50 min |
| September 3 | 89°F | 69°F | 27% | 18% | 12 h 50 min |
| September 4 | 89°F | 69°F | 27% | 17% | 12 h 50 min |
| September 5 | 88°F | 68°F | 27% | 17% | 12 h 50 min |
| September 6 | 88°F | 68°F | 26% | 17% | 12 h 40 min |
| September 7 | 88°F | 68°F | 26% | 16% | 12 h 40 min |
| September 8 | 88°F | 68°F | 26% | 16% | 12 h 40 min |
| September 9 | 88°F | 67°F | 26% | 16% | 12 h 40 min |
| September 10 | 87°F | 67°F | 25% | 16% | 12 h 40 min |
| September 11 | 87°F | 67°F | 25% | 16% | 12 h 30 min |
| September 12 | 87°F | 67°F | 25% | 16% | 12 h 30 min |
| September 13 | 87°F | 66°F | 25% | 16% | 12 h 30 min |
| September 14 | 87°F | 66°F | 25% | 15% | 12 h 30 min |
| September 15 | 86°F | 66°F | 25% | 15% | 12 h 30 min |
| September 16 | 86°F | 65°F | 24% | 15% | 12 h 20 min |
| September 17 | 86°F | 65°F | 24% | 15% | 12 h 20 min |
| September 18 | 86°F | 65°F | 24% | 15% | 12 h 20 min |
| September 19 | 85°F | 65°F | 24% | 15% | 12 h 20 min |
| September 20 | 85°F | 64°F | 24% | 15% | 12 h 20 min |
| September 21 | 85°F | 64°F | 24% | 15% | 12 h 10 min |
| September 22 | 84°F | 64°F | 24% | 15% | 12 h 10 min |
| September 23 | 84°F | 63°F | 24% | 15% | 12 h 10 min |
| September 24 | 84°F | 63°F | 24% | 15% | 12 h 10 min |
| September 25 | 84°F | 62°F | 23% | 15% | 12 h 10 min |
| September 26 | 83°F | 62°F | 23% | 14% | 12 h |
| September 27 | 83°F | 62°F | 23% | 14% | 12 h |
| September 28 | 83°F | 61°F | 23% | 14% | 12 h |
| September 29 | 82°F | 61°F | 23% | 14% | 12 h |
| September 30 | 82°F | 61°F | 23% | 14% | 11 h 50 min |
- Normal high
- 86°FSeptember average
- Normal low
- 65°FSeptember average
- Precipitation
- 4.00 inmonth total
- Days with precipitation
- 70.01 inch or more
- Days at 90°F or more
- 9
- Daylight
- 12 h 50 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 25
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013876; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Birmingham in September?
On a given September day the chance of 0.01 inch or more is 25% on average, highest around September 1 (28%). In all, 4.00 in falls on 7 days of a normal September, 1 of them with an inch or more.
In a normal September in Birmingham, 9 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013876.
How humid and windy is Birmingham in September?
At 3 p.m. the normal temperature is 80°F with 47% relative humidity and a dew point of 57°F; at 6 a.m. it is 62°F with 85% humidity. The wind averages 5.4 mph, most often from the north-northeast in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 62°F | 58°F | 85% | 3.5 mph | 65% |
| 9 a.m. | 72°F | 59°F | 64% | 7.2 mph | 57% |
| noon | 78°F | 58°F | 50% | 8.0 mph | 48% |
| 3 p.m. | 80°F | 57°F | 47% | 8.3 mph | 47% |
| 6 p.m. | 73°F | 59°F | 62% | 4.9 mph | 64% |
| 9 p.m. | 67°F | 59°F | 75% | 3.9 mph | 72% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00013876. 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 Birmingham?
The warmest September temperature on Birmingham's official record (since 1895) is 106°F, on September 6, 1925; the coldest is 37°F, on September 30, 1967. The wettest September brought 13.19 in (1906).
The September mean against the 1991-2020 normal of 75.6°F: 2021 75.1°F (−0.5), 2022 73.8°F (−1.8), 2023 77.0°F (+1.5), 2024 76.4°F (+0.8), 2025 78.4°F (+2.8), 2026 81.9°F (+6.3). 4 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 75.1°F | −0.5°F | 1.56 in |
| 2022 | 73.8°F | −1.8°F | 2.16 in |
| 2023 | 77.0°F | +1.5°F | 1.94 in |
| 2024 | 76.4°F | +0.8°F | 5.47 in |
| 2025 | 78.4°F | +2.8°F | 1.90 in |
| 2026 | 81.9°F | +6.3°F | 1.99 in |
Source: records: ACIS, NWS threaded record BHMthr; recent months: ACIS, station USW00013876. Records and recent months use complete months only.
How does September in Birmingham compare across Alabama?
Across the 80 places PlainClimate covers in Alabama, September normal highs run from 81°F in Valley Head to 90°F in Eufaula; Birmingham's is 86°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.