Nashville is 6.3°C (11.3°F) warmer by day, Nashville has 4.7°C (8.5°F) warmer nights, Nashville gets 119 mm (4.7 in) more rain a year.
Boston is at its warmest in July and coolest in January, while Nashville peaks in August and bottoms out in January. Month for month, Nashville is the warmer of the two in 12 of 12 months.
Nashville is the wetter of the two, collecting 1,332 mm (52.4 in) of rain a year against 1,213 mm (47.8 in) in Boston. The most comfortable time to visit is June, July and August in Boston and May, June and September in Nashville.
| Boston | Metric | Nashville |
|---|---|---|
| 🌡️ Temperature | ||
| 57.4°F | 🌡️Average daytime high | 68.7°F |
| 40.1°F | 🌙Average nighttime low | 48.6°F |
| July | 🔥Hottest month | August |
| January | ❄️Coldest month | January |
| 🌧️ Rain | ||
| 47.8 in | 🌧️Annual rainfall | 52.4 in |
| October | ☔Wettest month | May |
| February | 🏜️Driest month | October |
| 💨 Climate | ||
| 80% | 💧Average humidity | 77% |
| 0.7 m/s | 💨Average wind speed | 1.7 m/s |
Overnight, Boston typically falls to around 4.5°C (40.1°F) while Nashville settles near 9.2°C (48.6°F).
Boston is hottest in July and coldest in January, whereas Nashville peaks in August and is coolest in January.
Boston sees the most rain in October and the least in February; Nashville is wettest in May and driest in October.
Boston feels the more humid of the two, averaging 80% relative humidity against 77%.
For Nashville, the pick of the year is May, June and September.
Month by month, here is the coldest night, the average day and the hottest afternoon each city can expect. Switch Compare to read rainfall, humidity, wind or solar instead, and Period to move between the long-term 45-year average and any single year — the shading is a quick warm-to-cool guide.
| Month | Boston | Nashville | ||||
|---|---|---|---|---|---|---|
| Min | Avg | Max | Min | Avg | Max | |
| January | 17.8 | 25❄️ | 32.4 | 27.3 | 36❄️ | 44.6 |
| February | 19.4 | 27.1 | 34.9 | 30.7 | 40.3 | 49.6 |
| March | 26.4 | 34.7 | 43 | 38.1 | 48.6 | 59 |
| April | 35.8 | 45.1 | 54.5 | 46.9 | 57.6 | 68 |
| May | 46.4 | 55.9 | 65.5 | 57 | 66.6 | 76.1 |
| June | 55.9 | 65.1 | 74.3 | 65.3 | 74.7 | 83.8 |
| July | 62.4 | 71.8🔥 | 81.1 | 69.6 | 79.2🔥 | 88.9 |
| August | 61.3 | 71.1 | 80.8 | 68.4 | 79.2 | 90 |
| September | 54.1 | 64 | 73.8 | 61 | 72.5 | 84 |
| October | 43.7 | 52.5 | 61.5 | 49.3 | 60.8 | 72.5 |
| November | 33.8 | 41.5 | 49.3 | 37.9 | 48.7 | 59.4 |
| December | 24.8 | 31.5 | 38.1 | 30.9 | 39.9 | 48.7 |
| Annual Avg | 40.1 | 48.7 | 57.4 | 48.6 | 58.6 | 68.7 |
Min / mean / max temperature (°F). 🔥 marks each city's hottest month, ❄️ its coldest; shading runs cool blue to warm red.
The same figures plotted out, so the shape of a typical year is easier to see than in a grid. Where the two lines run close together Boston and Nashville feel alike; where they separate, they are genuinely different places to be.
Hover or tap any point to read the exact figures. Boston Nashville
See how Boston and Nashville stack up against other cities. Swipe for more.
Choose which city to keep, then search for any other city in our database — we'll build the comparison for you.
Quick answers to the questions people ask most when comparing Boston and Nashville — each drawn straight from the climate figures above.
Nashville is the warmer of the two. It averages daytime highs of 20.4°C (68.7°F) against 14.1°C (57.4°F) in Boston — roughly 6.3°C (11.3°F) warmer by day. Nights are milder in Nashville, with average lows of 9.2°C (48.6°F) versus 4.5°C (40.1°F).
Boston is hottest in July, averaging highs of about 27.3°C (81.1°F), while Nashville peaks in August at around 32.2°C (90°F). That makes Nashville the hotter of the two at the height of summer.
Boston gets colder. In its coldest month (January) overnight lows average about -7.9°C (17.7°F), compared with -2.6°C (27.3°F) at the low point of the year in Nashville.
Nashville is the wetter city, collecting about 1,332 mm (52.4 in) of rain a year versus 1,213 mm (47.8 in) in Boston. Boston is wettest in October and driest in February; Nashville is wettest in May and driest in October.
Boston is the more humid of the two, averaging 80% relative humidity over the year against 77% in Nashville.
The most comfortable months in Boston are June, July and August, when average temperatures are at their mildest.
Nashville is at its most pleasant around May, June and September, based on the mildest average temperatures of the year.
Nashville is the warmer city in all 12 months of the year. The gap is widest in March, about 7.7°C (13.9°F), and narrowest in November, about 4°C (7.2°F).
Boston has the bigger seasonal swing, about 26°C (46.8°F) between its coldest and hottest months versus 24°C (43.2°F) in Nashville — so Nashville has the steadier, more even climate.
It depends what matters most to you: choose Nashville for warmer weather, pick Boston if you prefer drier conditions and go for Nashville if you want lower humidity. There is no single "better" climate — it comes down to whether you value warmth, dryness or comfort most.
Every figure on this page is calculated from NASA POWER satellite climate data spanning 1981–2025 (45 years). The averages describe the long-term climate of Boston and Nashville, not a single year's weather or a short-range forecast.
