Blackwood (NJ) Temperature by Month
Blackwood in New Jersey, United States of America sees significant seasonal temperature differences, with daytime highs between 5°C (41°F) in January and 31°C (88°F) in July, averaging 18°C (64°F) annually. Explore the full monthly breakdown below.
Blackwood Monthly Temperatures
The weather in Blackwood experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 21°C (70°F) in July to -4°C (25°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Blackwood by month:
The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. July, the city's warmest month, averages 275 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Blackwood 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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Blackwood vs World: Temperature Compared
Blackwood's average annual maximum temperature is 18°C (64°F). To put that in context, here's how it compares to a few well-known destinations:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
Chicago, USA averages 15°C (59°F) annually — known for extreme seasonal swings, from bitterly cold winters to warm summers.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
What Does the Temperature Feel Like in Blackwood?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Blackwood, January is the coolest month, with average highs of 5°C (41°F) and humidity around 66% — considered high. In July, the warmest month, temperatures average 31°C (88°F) with 69% humidity — conditions that feel high. For a full picture, see our humidity page.
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 Blackwood's weather — including monthly rainfall, sunshine hours, and humidity — visit our Blackwood climate page.
