Weather in Boston in September
In an average September, Boston sees a daily high around 74°F and a low around 58°F, based on 1980–2026 of local climate records.
| Average high | 74°F |
|---|---|
| Typical high range | 65°F to 83°F |
| Average low | 58°F |
| Typical low range | 48°F to 66°F |
| Average daily precipitation | 0.10 in |
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
96°F
1983-09-11
Lowest
53°F
1992-09-30
Low
Highest
76°F
2018-09-04
Lowest
36°F
2000-09-29
Feels-like
Highest
132°F
2013-09-11
Lowest
30°F
2000-09-29
Humidity
Highest
22.0 g/m³
2018-09-06
Lowest
4.3 g/m³
1981-09-30
Wind
Highest
32 mph
1985-09-27
Lowest
3 mph
2017-09-16
Gust
Highest
73 mph
1985-09-27
Lowest
9 mph
2011-09-26
Precip
Wettest
8.44 in
2008
Driest
0.70 in
1980
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