Nashville records about 1222mm of rain across roughly 119 wet days a year, which is a 33% chance on an average day. May is the wettest month at 126mm (10% of the annual total) and August the driest at 86mm. Local rain type: thunderstorms. Nashville gets substantial rain year-round — no month is truly dry. Spring storms can be severe with tornado risk.
Chance of rain on an average day: 33%
Rainfall climatology for Nashville. The live hour-by-hour answer for today loads at the top of this page from Open-Meteo and refreshes through the day — the figures below describe a typical year, not today.
Last updated: · Live forecast data refreshes hourly.
| Annual rainfall | 1222mm |
| Rain days per year | 119 |
| Odds on an average day | 33% |
| Wettest month | May — 126mm over 12 days |
| Driest month | August — 86mm over 8 days |
| Rain type | thunderstorms |
| Best dry window | September and October offer the driest conditions with comfortable temperatures. |
| Worst rain window | March through May brings severe storm season including tornado risk. |
May delivers 47% more rain than August (126mm vs 86mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 10% of the annual total, so rain in Nashville is spread through the year — there is no season you can rely on being dry.
Nashville rain arrives in short, heavy bursts — shelter and timing matter more than gear.
Rain falls on about 12 days in May against 8 in August — the frequency swing matters more for planning than the millimetre totals.
Climate normals. Use them to judge whether today's live forecast at the top of the page is typical or unusual for the season.
| Month | Rainfall | Rain days | Chance on a given day | Highs |
|---|---|---|---|---|
| January | 98mm | 9 | 30% | 9°C |
| February | 101mm | 10 | 33% | 9°C |
| March | 119mm | 12 | 40% | 12°C |
| April | 100mm | 10 | 33% | 18°C |
| May | 126mm | 12 | 40% | 23°C |
| June | 103mm | 10 | 33% | 29°C |
| July | 103mm | 10 | 33% | 32°C |
| August | 86mm | 8 | 27% | 32°C |
| September | 89mm | 9 | 30% | 29°C |
| October | 89mm | 9 | 30% | 23°C |
| November | 97mm | 9 | 30% | 18°C |
| December | 118mm | 11 | 37% | 12°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Nashville we combine the hourly probability curve, expected volume in millimetres, and the city's own rainfall record into a single umbrella verdict.
| Factor | Weight | What it measures |
|---|---|---|
| Hourly probability | 40% | Peak and sustained chance of measurable rain across the next 24 hours. |
| Expected volume | 30% | Total millimetres, which separates a passing shower from a genuine soaking. |
| Timing & duration | 20% | When rain starts, when it eases, and the longest continuous dry window. |
| Local rain type | 10% | Drizzle, brief showers, thunderstorms or monsoon — each needs different gear. |
Live hourly values come from Open-Meteo and refresh through the day. Monthly rainfall figures are climate normals, so they describe a typical year rather than a forecast.
Nashville records rain on roughly 119 days a year — about a 33% chance on any given day — totalling around 1222mm.
May, with about 126mm over 12 rain days. That is 10% of the entire year's rainfall in a single month.
August is the driest month at 86mm across roughly 8 days. September and October offer the driest conditions with comfortable temperatures.
Nashville gets substantial rain year-round — no month is truly dry. Spring storms can be severe with tornado risk.
No. Probability is the chance that at least 0.2mm of rain falls at your location at some point in the period. Check the expected millimetres alongside it: 40% with 0.4mm is a passing shower, 40% with 12mm is a soaking.