Weather in Northampton in September
In an average September, Northampton sees a daily high around 18°C and a low around 10°C, based on 1980–2026 of local climate records.
| Average high | 18°C |
|---|---|
| Typical high range | 15°C to 22°C |
| Average low | 10°C |
| Typical low range | 7°C to 14°C |
| Average daily precipitation | 3 mm |
September records
The most extreme September on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
31°C
2023-09-09
Lowest
9°C
1993-09-27
Low
Highest
19°C
2016-09-06
Lowest
2°C
1986-09-19
Feels-like
Highest
37°C
2023-09-09
Lowest
-2°C
2018-09-25
Humidity
Highest
15.8 g/m³
2023-09-10
Lowest
5.8 g/m³
1990-09-21
Wind
Highest
47 km/h
2006-09-02
Lowest
6 km/h
2023-09-08
Gust
Highest
93 km/h
2018-09-20
Lowest
12 km/h
1987-09-28
Precip
Wettest
149 mm
2000
Driest
16 mm
1996
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