Birmingham, AL weather in September
September in Birmingham: warm and often humid, with some rain. Highs 86°F, lows 65°F, about 7 wet days.
- Normal high
- 86°F
- Normal low
- 65°F
- Wet days
- 7
- 4.0 in total
- Muggy days
- 14
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 89°F | 82°F |
| Normal low | 69°F | 61°F |
| Chance of a wet day | 27% | 23% |
| Sunrise / sunset | 6:21 am / 7:13 pm | 6:40 am / 6:33 pm |
| Daylight | 12.9 h | 11.9 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical September day
- 6 am67°Fdew point 63°F
- 9 am77°Fdew point 64°F
- Noon83°Fdew point 63°F
- 3 pm84°Fdew point 62°F
- 6 pm78°Fdew point 63°F
- 9 pm72°Fdew point 64°F
NOAA hourly normals (local standard time) from Birmingham Airport (5 mi away); average wind 5 mph; clear or few clouds in 42% of daytime hours, mostly cloudy or overcast in 35%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F3 of 30
- Hot dayshigh 90°F or more9 of 30
- Muggy daysdaily mean dew point 65°F or more14 of 30
- Wet daysat least 0.01 in of rain or melted snow7 of 30
- Notable rainat least 0.10 in4 of 30
- Freezing nightslow 32°F or below0 of 30
- Snow on the groundsnow depth 1 in or more0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain in September
Normal precipitation is 4.0 in; a dry September brings about 1.4 in and a wet one about 5.7 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How September varies from year to year
- Warmest September, 1991-20202019: average high 95°F
- Coolest September2001: average high 81°F
- Wettest September2011: 12.1 in
- Driest September2008: 0.4 in
- Highest reading99°F (September 17, 2019)
- Lowest reading41°F (September 26, 2001)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
September compared with August and October
| August | September | October | |
|---|---|---|---|
| Normal high | 91°F | 86°F | 76°F |
| Normal low | 71°F | 65°F | 54°F |
| Wet days | 11 | 7 | 7 |
| Comfortable days | 0 | 3 | 14 |
| Daylight | 13.4 h | 12.4 h | 11.3 h |
Highs change by -5°F from August and -10°F into October.
Nearby alternatives in September
- Cooler: Gatlinburg, TN241 mi · high 78°F · 11 wet days
How Birmingham ranks in September
- Normal high130th warmest of 378 cities; 6th of 6 in Alabama
- Wet days148th driest of 378
- Comfortable days233rd most of 342
What to pack for Birmingham in September
- Light, breathable clothing – highs near 86°F and about 14 muggy days
Heating and cooling
September has 6 heating degree days and 324 cooling degree days (base 65°F), 7% of the year's total heating and cooling demand.
Questions
How hot is Birmingham in September?
The normal high is 86°F and the normal low is 65°F. From 1991 to 2020 the hottest September reading was 99°F (most recently on September 17, 2019).
Does it rain a lot in Birmingham in September?
About 7 days in September have at least 0.01 in of precipitation, and the normal total is 4.0 in. The wettest September in 1991-2020 was in 2011 (12.1 in); the driest was in 2008 (0.4 in).
Is September a good time to visit Birmingham?
September ranks 8th of 12 months on our comfort score for Birmingham (48 out of 100). It has about 3 comfortable days and about 9 days at 90°F or hotter. The best month is April.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Birmingham Airport (USW00013876), 4.5 mi NE of the city center, 615 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Birmingham International Airport (722280-13876), 4.5 mi NE of the city center, 616 ft . Hourly observations, 1991-2020.