United States · urban-centre population 1,397,788
Portland
Weather values are area-weighted across the 565 km² urban centre (4 ERA5 cells).
32.1
matching days / year for “Eternal spring” · 2021-2025 recent-weather sample (not a 30-year normal)
Monthly high (p10–p90)
Whiskers span the 10th–90th percentile daily high; the tick marks the monthly average.
- January: average 8°C, p10 5°C, p90 11°C
- February: average 9°C, p10 5°C, p90 13°C
- March: average 12°C, p10 8°C, p90 18°C
- April: average 16°C, p10 10°C, p90 23°C
- May: average 20°C, p10 14°C, p90 27°C
- June: average 24°C, p10 17°C, p90 32°C
- July: average 29°C, p10 24°C, p90 35°C
- August: average 29°C, p10 22°C, p90 36°C
- September: average 25°C, p10 19°C, p90 31°C
- October: average 18°C, p10 12°C, p90 26°C
- November: average 11°C, p10 7°C, p90 15°C
- December: average 8°C, p10 5°C, p90 13°C
Matching days by month · Eternal spring
- January: 0.0 matching days per year
- February: 0.4 matching days per year
- March: 1.1 matching days per year
- April: 4.0 matching days per year
- May: 3.7 matching days per year
- June: 6.5 matching days per year
- July: 3.5 matching days per year
- August: 3.1 matching days per year
- September: 5.3 matching days per year
- October: 4.5 matching days per year
- November: 0.0 matching days per year
- December: 0.0 matching days per year
Presets
- Eternal spring: 32.1 days/yr
- Mild and dry: 38.0 days/yr
- Beach weather: 54.6 days/yr
- Crisp and clear: 11.1 days/yr
- Warm, not sweaty: 53.3 days/yr