Portland weather in July
July in Portland: hot, dry, with clean air — one of the best months to visit.
#2 of 12 months in Portland · #35 of 604 destinations to visit in July · comfort 93/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Portland climate normals — July
| Daytime high | 29°C / 84°F | 🥵 hot |
|---|---|---|
| Nighttime low | 15°C / 59°F | |
| Feels like (high) | 29°C / 84°F | |
| Rainfall | 5 mm / 0.2 in | ☀️ dry |
| Rainy days | 1 days | |
| Humidity | 56% | 🍃 comfortable |
| Dew point | 12°C / 53°F | |
| Sunshine | 13 h/day | |
| Daylight | 15.3 h | |
| Wind | 12 km/h / 8 mph | |
| Air quality (US AQI) | 29 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Portland in July — FAQ
- Is July a good time to visit Portland?
- July in Portland: hot, dry, with clean air — one of the best months to visit. It ranks #2 of 12 months for Portland on SeasonMap's comfort score (93/100).
- What is the weather like in Portland in July?
- In July, Portland averages a daily high of 29.1°C and a low of 14.8°C, with about 5.1 mm of rain over roughly 1.2 rainy days.
- What is the air quality in Portland in July?
- Portland has a mean US Air Quality Index of about 29 in July.