Frankfurt Weather in September
In September, Frankfurt averages a high of 21°C (69°F) and a low of 11°C (52°F), based on 55 years of historical weather data from FRANKFURT/MAIN-WESTEND.
21°C
Average high
69°F
11°C
Average low
52°F
33°C
Record high
91°F · 2024
1°C
Record low
34°F · 1979
What to Expect in Frankfurt in September
Typical September days in Frankfurt reach 21°C (69°F) during the afternoon and cool to around 11°C (52°F) overnight. On average, measurable rain falls on about 40% of days this month. Over the past 55 years, September temperatures in Frankfurt have ranged from a record high of 33°C (2024) down to a record low of 1°C (1979).
For a day-by-day look or other months, see the full Frankfurt weather history.