Weather in Bonn, North Rhine-Westphalia, Germany in September
In an average September, Bonn sees a daily high around 19°C and a low around 9°C, based on 1981–2026 of local climate records.
| Average high | 19°C |
|---|---|
| Typical high range | 14°C to 25°C |
| Average low | 9°C |
| Typical low range | 5°C to 13°C |
| Average daily precipitation | 3 mm |
September records
The most extreme September on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
32°C
2020-09-15
Lowest
9°C
2025-09-25
Low
Highest
18°C
2024-09-02
Lowest
1°C
2008-09-19
Feels-like
Highest
34°C
2023-09-11
Lowest
-4°C
1995-09-29
Humidity
Highest
15.5 g/m³
2023-09-12
Lowest
5.1 g/m³
2018-09-26
Wind
Highest
55 km/h
2012-09-24
Lowest
4 km/h
1991-09-09
Precip
Wettest
164 mm
1984
Driest
18 mm
1997
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