The temperatures in Hunterdon in September are quite cold with temperatures between 5°C and 14°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Hunterdon during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Hunterdon in September 2025.
If you’re planning to visit Hunterdon in the near future, we highly recommend that you review the 14 day weather forecast for Hunterdon before you arrive.
Temperatures
14° / 5°
Rainy Days
4
Snowy Days
0
Dry Days
26
Rainfall
40
mm
Sun Hours
9.8
Hrs
