The average final 90 Degree Day in Atlanta is around September 9, though the record latest 90 degree day for the city is October 9, 1941. — Labor Day usually marks the “unofficial end of Summer”, with the Autumn Equinox taking place around 2 to 3 weeks later.
With both Labor Day and the Equinox fluctuating in date, meteorologists use August 31 as the more consistent end of summer, and September 1 marks the first day of “meteorological fall”.
However, it’s been a scorching hot summer, and the first half of September will not bring much relief!
From June 1 through August 31 -- “meteorological summer” -- the average temperature in Atlanta was 81.5 degrees. This is calculated by adding up all the morning lows and afternoon highs, then averaging by the number of days in the season.
With an average temperature of 81.6 degrees for the summer, Atlanta endured its 7th Hottest Summer on record.
Below are the Top Ten Hottest Summers in Atlanta:
How Many Days at or Above 90°?
Spring started off on a rather warm note, as Metro Atlanta registered its earliest ever 90 degree day on April 17, 2026. An additional two afternoons peaked at 90 degrees in the month of May.
June was hot, with as many as 10 days at or above 90 degrees
However, July and August were insufferable, with both months recording 90 degrees for a long stretch of time (25 days in July, 24 days in August).
September kept the streak alive with 6 days at or above 90 -- so far.
In total, Atlanta endured 68 days at or above 90 degrees this year, from May through September.
The breakdown is available below:
- April: 1 day
- May: 2 days
- June: 10 days
- July: 25 days
- August: 24 days
- September: 6 days (with more on the way)
How Many Days at or Above 95°?
Metro Atlanta soared past 90 degrees and nearly reached 100 a few times this year. The hottest two days this summer occurred on July 2 and August 17, when the thermometer reached 98 degrees.
Overall, Atlanta endured 18 days at or above 95 degrees this year, from June through early September.
The breakdown is available below:
- June: 2 days
- July: 4 days
- August: 7 days
- September: 5 days
More 90 degree days are in the forecast for this week before rain showers arrive over the weekend.
Historically, Does It Stay Hot Through Fall?
If this Fall is anything like the past few years, don’t get your hopes up for a consistent cool snap!
Both 2024 and 2025 featured 90 degree days on September 24.
On average, the final 90 Degree Day in Atlanta is around September 9, though the record latest 90 degree day for the city is October 9, 1941.
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