Portland, OR weather in July
Expect warm, mostly dry weather in Portland in July, with highs near 80°F and lows near 58°F. Rain falls on about 4 days. It is one of the warmest months in Portland. Great for outdoor plans.
- Normal high
- 80°F
- Normal low
- 58°F
- Wet days
- 4
- 0.5 in total
- Muggy days
- 0
- dew point 65°F+
How July changes from start to finish
| July 1 | July 31 | |
|---|---|---|
| Normal high | 77°F | 82°F |
| Normal low | 56°F | 59°F |
| Chance of a wet day | 18% | 10% |
| Sunrise / sunset | 5:25 am / 9:03 pm | 5:53 am / 8:40 pm |
| Daylight | 15.6 h | 14.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical July day
- 6 am60°Fdew point 54°F
- 9 am66°Fdew point 54°F
- Noon73°Fdew point 54°F
- 3 pm79°Fdew point 54°F
- 6 pm78°Fdew point 55°F
- 9 pm70°Fdew point 55°F
NOAA hourly normals (local standard time) from Portland Intl Airport (6 mi away); average wind 7 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F16 of 31
- Hot dayshigh 90°F or more4 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow4 of 31
- Notable rainat least 0.10 in2 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per July, counted from daily records for each year 1991-2020.
Rain in July
Normal precipitation is 0.5 in; a dry July brings about 0.09 in and a wet one about 0.7 in (25th and 75th percentiles). Days with half an inch or more are rare.
How July varies from year to year
- Warmest July, 1991-20202009: average high 86°F
- Coolest July1993: average high 71°F
- Wettest July1993: 2.4 in
- Driest July2003: no measurable precipitation
- Highest reading105°F (July 29, 2009)
- Lowest reading47°F (July 5, 1996)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
July compared with June and August
| June | July | August | |
|---|---|---|---|
| Normal high | 73°F | 80°F | 81°F |
| Normal low | 53°F | 58°F | 59°F |
| Wet days | 9 | 4 | 4 |
| Comfortable days | 19 | 16 | 15 |
| Daylight | 15.6 h | 15.3 h | 14.1 h |
Highs change by +7°F from June and +1°F into August.
Nearby alternatives in July
- Warmer: Leavenworth, WA172 mi · high 87°F · 3 wet days
- Cooler: Cannon Beach, OR67 mi · high 67°F · 6 wet days
How Portland ranks in July
- Normal high320th warmest of 378 cities; 5th of 6 in Oregon
- Wet days76th driest of 378
- Comfortable days26th most of 340
What to pack for Portland in July
- Sunglasses and sunscreen – about 15.3 hours of daylight and highs near 80°F
Heating and cooling
July has 18 heating degree days and 145 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Portland in July?
The normal high is 80°F and the normal low is 58°F. From 1991 to 2020 the hottest July reading was 105°F (most recently on July 29, 2009).
Does it rain a lot in Portland in July?
About 4 days in July have at least 0.01 in of precipitation, and the normal total is 0.5 in. The wettest July in 1991-2020 was in 1993 (2.4 in); the driest was in 2003, with no measurable precipitation.
Is July a good time to visit Portland?
July ranks 2nd of 12 months on our comfort score for Portland (76 out of 100). It has about 16 comfortable days and about 4 days at 90°F or hotter. The best month is June.
Where the numbers come from
- Temperature: Portland Kgw-Tv (USC00356749), 0.7 mi WSW of the city center, 159 ft (127 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Rain, snowfall, snow depth, frost dates and humidity and wind by hour: Portland Intl Airport (USW00024229), 5.9 mi NE of the city center, 19 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Portland International Airport (726980-24229), 6.0 mi NNE of the city center, 22 ft . Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).