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Nashville vs Portland weather: climate comparison
Nashville is the warmer of the two, averaging 60°F (16°C) over the year against 54°F (12°C) in Portland. Nashville is wetter, with 55.1 in (1399 mm) of precipitation a year to Portland's 50.4 in (1280 mm). Below: every month side by side, from 30 years of ERA5 data (1996–2025).
- Mean temperature
- 15.8°C Nashville
12.0°C Portland - Annual precipitation
- 1398.6 mm Nashville
1279.7 mm Portland - Rainy days a year
- 131 Nashville
146 Portland - Sunshine per day
- 8.9 h Nashville
8.5 h Portland
Month by month
| Month | Nashville | Portland |
|---|---|---|
| January | 8.1°C | 8.1°C |
| February | 10.8°C | 9.5°C |
| March | 15.6°C | 12.0°C |
| April | 20.6°C | 14.8°C |
| May | 25.4°C | 18.6°C |
| June | 29.8°C | 22.2°C |
| July | 31.4°C | 27.6°C |
| August | 31.0°C | 27.9°C |
| September | 27.9°C | 23.9°C |
| October | 21.9°C | 16.8°C |
| November | 15.1°C | 11.0°C |
| December | 10.1°C | 7.7°C |
Year at a glance
| Measure | Nashville | Portland |
|---|---|---|
| Mean annual temperature | 15.8°C | 12.0°C |
| Warmest month (avg high) | Jul · 31°C | Aug · 28°C |
| Coldest month (avg low) | Jan · -1°C | Feb · 2°C |
| Annual range (warmest high − coldest low) | 32°C | 26°C |
| Annual precipitation | 1398.6 mm | 1279.7 mm |
| Rainy days per year | 131 | 146 |
| Wettest / driest month | Apr / Oct | Dec / Jul |
| Average sunshine per day | 8.9 h | 8.5 h |
In short: Nashville is the warmest overall (15.8°C mean); Nashville gets the most precipitation (1398.6 mm a year); Nashville is the sunniest (8.9 h a day on average); Portland has the smallest swing between its warmest and coldest months.
Record high 1996–2025: Nashville 41.4°C (2012-06-29), Portland 46.0°C (2021-06-28). Record low: Nashville -20.9°C (1996-02-04), Portland -15.3°C (1996-02-02).
Source: Open-Meteo Historical Weather API (CC BY 4.0). Values are ERA5 reanalysis model data on a ~9–25 km grid, not readings from a weather station, so a single town’s thermometer can differ by a few degrees and local showers can be missed. Monthly means of daily ERA5 values, 1996–2025, for the grid cells nearest Nashville (36.17, -86.73) and Portland (45.52, -122.64).
Which months differ most?
The gap in average highs is widest in June, when Nashville runs 14°F / 8°C warmer, and narrowest in January (0°F / 0°C apart). The biggest rainfall difference is in July: Nashville gets 4.7 in (119 mm) more on average.
Add a third or fourth city, or swap in any other place, in the full comparison tool. For one city in depth, see the Nashville climate and Portland climate pages.
Compare Nashville or Portland with another city
Questions people ask
Is Nashville warmer than Portland?
Nashville is warmer on average: its mean annual temperature is 60°F (16°C) against 54°F (12°C) in Portland (ERA5, 1996–2025).
Which gets more rain, Nashville or Portland?
Nashville, with about 55.1 in (1399 mm) of precipitation a year and 131 days with at least 1 mm, compared with 50.4 in (1280 mm) and 146 days in Portland.
Which is sunnier, Nashville or Portland?
Nashville averages more sunshine: 8.9 h a day against 8.5 h. Sunshine duration is modelled from cloud cover.
How reliable is this comparison?
Both cities use the same 30-year reanalysis, so differences are consistent. Absolute values describe a grid cell several kilometres wide and can differ by a degree or two from the airport station.