Weather in Haverhill in September
How warm is it in Haverhill in September?
In September the typical daytime high in Haverhill is 23.5 °C on average, from 26.1 °C at the start to 20.6 °C at the end of the month.
That is 4.1 °C cooler than in August and 6.1 °C warmer than in October.
The last 10 years were 1.5 °C warmer than more than 40 years ago.
Click a day for more: afternoon and night, the usual range, records and how fast it is warming.
The average of the weather stations Nashua (32 km) and Blue Hill Coop (63 km); nearer ones count more.