West Dennis (MA) Temperature by Month
West Dennis in Massachusetts, United States of America sees significant seasonal temperature differences, with daytime highs between 4°C (39°F) in February and 26°C (79°F) in July, averaging 15°C (59°F) annually. Explore the full monthly breakdown below.
West Dennis Monthly Temperatures
The climate in West Dennis is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 19°C (66°F) in July to -4°C (25°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in West Dennis by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. July, the city's warmest month, sees 301 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: West Dennis vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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West Dennis vs World: Temperature Compared
West Dennis's average annual maximum temperature is 15°C (59°F). To put that in context, here's how it compares to a few well-known destinations:
Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.
Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on West Dennis's weather — including monthly rainfall, sunshine hours, and humidity — visit our West Dennis climate page.
