South Boston Temperature by Month
South Boston in Virginia, United States of America sees significant seasonal temperature differences, with daytime highs between 9°C (48°F) in January and 31°C (88°F) in July, averaging 21°C (70°F) annually. Explore the full monthly breakdown below.
South Boston Monthly Temperatures
Depending on the time of the year, temperatures range from very warm to cold in South Boston. Nighttime lows follow the same pattern, ranging from 19°C (66°F) to -3°C (27°F).
The chart below illustrates the average maximum day and minimum night temperatures in South Boston by month:
The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM.
The chart below shows the average temperature throughout the year:
Temperature: South Boston 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.
very warm
warm
pleasant
moderate
cold
very cold
South Boston vs World: Temperature Compared
South Boston's average annual maximum temperature is 21°C (70°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.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters — and seasons reversed compared to Europe.
Melbourne, Australia averages 20°C (68°F) annually — known for unpredictable weather, with four seasons sometimes happening in one day.
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 South Boston's weather — including monthly rainfall, sunshine hours, and humidity — visit our South Boston climate page.
