Portland weather in July: Portland, Oregon: normal highs, lows, rain and records for July
Portland in July has a normal high of 82°F and a normal low of 59°F, a daily mean of 70°F, rising from 78°F on the 1st to 84°F by the 31st. Measurable precipitation falls on 4 days in a normal July, 0.51 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 15°C, 13 mm of precipitation in July.
- NOAA stationPortland International Airport
- Station IDUSW00024229
- Location45.59°N 122.60°W
- Elevation19 ft (6 m)
- From the center4 miles
- Population635,749
- Jan 48° 36°
- Feb 52° 37°
- Mar 57° 40°
- Apr 62° 44°
- May 69° 49°
- Jun 74° 54°
- Jul 82° 59°
- Aug 82° 59°
- Sep 77° 54°
- Oct 64° 47°
- Nov 54° 41°
- Dec 47° 36°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Portland in July?
The normal high is 82°F and the normal low 59°F, for a daily mean of 70.2°F. July is 6.0°F warmer than June and 0.4°F cooler than August. July is the 2nd warmest month of the year in Portland and the 12th wettest. Across the month the normal high rises 6°F, from 78°F on July 1 to 84°F on July 31. From one year to the next July's mean temperature typically moves about 2.2°F either way (NOAA's standard deviation), so roughly two Julys in three average between 68°F and 72°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 20%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 78°F | 56°F | 20% | 9% |
| July 8 | 80°F | 58°F | 16% | 7% |
| July 15 | 82°F | 59°F | 13% | 6% |
| July 22 | 83°F | 59°F | 11% | 5% |
| July 31 | 84°F | 60°F | 10% | 4% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 26, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 78°F | 56°F | 20% | 9% | 15 h 40 min |
| July 2 | 79°F | 57°F | 19% | 9% | 15 h 40 min |
| July 3 | 79°F | 57°F | 19% | 9% | 15 h 40 min |
| July 4 | 79°F | 57°F | 18% | 8% | 15 h 40 min |
| July 5 | 80°F | 57°F | 17% | 8% | 15 h 40 min |
| July 6 | 80°F | 57°F | 17% | 8% | 15 h 30 min |
| July 7 | 80°F | 57°F | 16% | 7% | 15 h 30 min |
| July 8 | 80°F | 58°F | 16% | 7% | 15 h 30 min |
| July 9 | 81°F | 58°F | 15% | 7% | 15 h 30 min |
| July 10 | 81°F | 58°F | 15% | 7% | 15 h 30 min |
| July 11 | 81°F | 58°F | 15% | 6% | 15 h 30 min |
| July 12 | 82°F | 58°F | 14% | 6% | 15 h 30 min |
| July 13 | 82°F | 58°F | 14% | 6% | 15 h 30 min |
| July 14 | 82°F | 59°F | 13% | 6% | 15 h 20 min |
| July 15 | 82°F | 59°F | 13% | 6% | 15 h 20 min |
| July 16 | 82°F | 59°F | 13% | 5% | 15 h 20 min |
| July 17 | 83°F | 59°F | 13% | 5% | 15 h 20 min |
| July 18 | 83°F | 59°F | 12% | 5% | 15 h 20 min |
| July 19 | 83°F | 59°F | 12% | 5% | 15 h 20 min |
| July 20 | 83°F | 59°F | 12% | 5% | 15 h 10 min |
| July 21 | 83°F | 59°F | 11% | 5% | 15 h 10 min |
| July 22 | 83°F | 59°F | 11% | 5% | 15 h 10 min |
| July 23 | 83°F | 60°F | 11% | 4% | 15 h 10 min |
| July 24 | 84°F | 60°F | 11% | 4% | 15 h 10 min |
| July 25 | 84°F | 60°F | 11% | 4% | 15 h |
| July 26 | 84°F | 60°F | 10% | 4% | 15 h |
| July 27 | 84°F | 60°F | 10% | 4% | 15 h |
| July 28 | 84°F | 60°F | 10% | 4% | 15 h |
| July 29 | 84°F | 60°F | 10% | 4% | 14 h 50 min |
| July 30 | 84°F | 60°F | 10% | 4% | 14 h 50 min |
| July 31 | 84°F | 60°F | 10% | 4% | 14 h 50 min |
- Normal high
- 82°FJuly average
- Normal low
- 59°FJuly average
- Precipitation
- 0.51 inmonth total
- Days with precipitation
- 40.01 inch or more
- Days at 90°F or more
- 5
- Daylight
- 15 h 40 min to 14 h 50 minJuly 1 to July 31
- Days at 70°F or more
- 29
- Days at 80°F or more
- 18
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024229; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Portland in July?
On a given July day the chance of 0.01 inch or more is 13% on average, highest around July 1 (20%). In all, 0.51 in falls on 4 days of a normal July.
In a normal July in Portland, 5 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024229.
How humid and windy is Portland in July?
At 3 p.m. the normal temperature is 81°F with 40% relative humidity and a dew point of 54°F; at 6 a.m. it is 61°F with 79% humidity. The wind averages 7.0 mph, most often from the northwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 61°F | 54°F | 79% | 4.4 mph | 43% |
| 9 a.m. | 66°F | 55°F | 67% | 4.8 mph | 42% |
| noon | 75°F | 55°F | 51% | 7.1 mph | 59% |
| 3 p.m. | 81°F | 54°F | 40% | 9.1 mph | 66% |
| 6 p.m. | 81°F | 55°F | 42% | 10.3 mph | 67% |
| 9 p.m. | 71°F | 56°F | 59% | 8.9 mph | 71% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024229. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for July in Portland?
The warmest July temperature on Portland's official record (since 1940) is 107°F, on July 30, 1965; the coldest is 43°F, on July 2, 1955. The wettest July brought 2.68 in (1983).
The July mean against the 1991-2020 normal of 70.2°F: 2021 73.0°F (+2.8), 2022 73.7°F (+3.5), 2023 73.4°F (+3.2), 2024 74.4°F (+4.2), 2025 71.4°F (+1.2), 2026 70.7°F (+0.5). 6 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 73.0°F | +2.8°F | 0.00 in |
| 2022 | 73.7°F | +3.5°F | 0.17 in |
| 2023 | 73.4°F | +3.2°F | 0.00 in |
| 2024 | 74.4°F | +4.2°F | 0.08 in |
| 2025 | 71.4°F | +1.2°F | 0.33 in |
| 2026 | 70.7°F | +0.5°F | 0.16 in |
Source: records: ACIS, NWS threaded record PDXthr; recent months: ACIS, station USW00024229. Records and recent months use complete months only.
How does July in Portland compare across Oregon?
Across the 105 places PlainClimate covers in Oregon, July normal highs run from 64°F in Newport to 95°F in Ontario; Portland's is 82°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.