Birmingham, AL weather in August
Expect hot, oppressively humid weather with frequent rain in Birmingham in August, with highs near 91°F and lows near 71°F. Rain falls on about 11 days. It is one of the warmest months in Birmingham.
- Normal high
- 91°F
- Normal low
- 71°F
- Wet days
- 11
- 4.3 in total
- Muggy days
- 26
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 91°F | 89°F |
| Normal low | 72°F | 69°F |
| Chance of a wet day | 37% | 30% |
| Sunrise / sunset | 5:59 am / 7:47 pm | 6:20 am / 7:14 pm |
| Daylight | 13.8 h | 12.9 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 August day
- 6 am73°Fdew point 69°F
- 9 am82°Fdew point 70°F
- Noon87°Fdew point 69°F
- 3 pm88°Fdew point 68°F
- 6 pm83°Fdew point 68°F
- 9 pm77°Fdew point 69°F
NOAA hourly normals (local standard time) from Birmingham Airport (5 mi away); average wind 5 mph; clear or few clouds in 35% 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°F0 of 31
- Hot dayshigh 90°F or more19 of 31
- Muggy daysdaily mean dew point 65°F or more26 of 31
- Wet daysat least 0.01 in of rain or melted snow11 of 31
- Notable rainat least 0.10 in7 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 4.3 in; a dry August brings about 2.5 in and a wet one about 5.6 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 1 an inch or more.
How August varies from year to year
- Warmest August, 1991-20202007: average high 98°F
- Coolest August1992: average high 86°F
- Wettest August2003: 9.5 in
- Driest August2011: 0.5 in
- Highest reading105°F (August 23, 2007)
- Lowest reading52°F (August 29, 1992)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 91°F | 91°F | 86°F |
| Normal low | 72°F | 71°F | 65°F |
| Wet days | 12 | 11 | 7 |
| Comfortable days | 0 | 0 | 3 |
| Daylight | 14.1 h | 13.4 h | 12.4 h |
Highs change by 0°F from July and -5°F into September.
Nearby alternatives in August
- Drier: Memphis, TN217 mi · high 92°F · 8 wet days
- Cooler: Gatlinburg, TN241 mi · high 82°F · 14 wet days
How Birmingham ranks in August
- Normal high120th warmest of 378 cities; 6th of 6 in Alabama
- Wet days296th driest of 378
- Comfortable days240th most of 341
What to pack for Birmingham in August
- Light, breathable clothing – highs near 91°F and about 26 muggy days
- A rain jacket or umbrella – rain on about 11 days
Heating and cooling
August has 0 heating degree days and 494 cooling degree days (base 65°F), 10% of the year's total heating and cooling demand.
Questions
How hot is Birmingham in August?
The normal high is 91°F and the normal low is 71°F. From 1991 to 2020 the hottest August reading was 105°F (most recently on August 23, 2007).
Does it rain a lot in Birmingham in August?
About 11 days in August have at least 0.01 in of precipitation, and the normal total is 4.4 in. The wettest August in 1991-2020 was in 2003 (9.5 in); the driest was in 2011 (0.5 in).
Is August a good time to visit Birmingham?
August ranks 12th of 12 months on our comfort score for Birmingham (38 out of 100). It has almost no comfortable days and about 19 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.