Mercerville-Hamilton Square weather
Best months for weather: May–Oct. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Mercerville-Hamilton Square, New Jersey, United States.
Best Time to Visit
Peak season May–OctOff season Dec–Mar
Mercerville-Hamilton Square weather by month
When is the best time to visit Mercerville-Hamilton Square?
Based on weather alone, the best time to visit Mercerville-Hamilton Square is May–Oct, according to NASA's 2001–2025 climate averages. Dec–Mar tends to be the least pleasant. Average highs run from 4°C (39°F) in January to 28°C (83°F) in July.
What is the rainiest month in Mercerville-Hamilton Square?
December is the wettest month, with about 115 mm (4.5 in) of rain on average. February is the driest, with about 80 mm (3.1 in).
What is the hottest month in Mercerville-Hamilton Square?
July is the warmest, with average highs of 28°C (83°F) and lows of 20°C (68°F). January is the coolest, with highs of 4°C (39°F) and lows of -4°C (26°F).
Does Mercerville-Hamilton Square have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is December at about 115 mm (4.5 in).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), forecast and current conditions from Open-Meteo. Page updated . How we rate months