Hillsboro, OR weather in July
In July, Hillsboro sees highs around 81°F and lows around 54°F: warm and dry. There are about 3 days with rain. It is one of the warmest months in Hillsboro. Great for outdoor plans.
- Normal high
- 81°F
- Normal low
- 54°F
- Wet days
- 3
- 0.3 in total
- Muggy days
- 0
- dew point 65°F+
How July changes from start to finish
| July 1 | July 31 | |
|---|---|---|
| Normal high | 77°F | 84°F |
| Normal low | 52°F | 55°F |
| Chance of a wet day | 13% | 7% |
| Sunrise / sunset | 5:27 am / 9:04 pm | 5:54 am / 8:41 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 am57°Fdew point 52°F
- 9 am66°Fdew point 53°F
- Noon74°Fdew point 54°F
- 3 pm80°Fdew point 53°F
- 6 pm78°Fdew point 54°F
- 9 pm66°Fdew point 54°F
NOAA hourly normals (local standard time) from Portland-Hillsboro Airport (2 mi away); average wind 5 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F13 of 31
- Hot dayshigh 90°F or more8 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow3 of 31
- Notable rainat least 0.10 in1 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 0.3 in; a dry July brings about 0.01 in and a wet one about 0.5 in (25th and 75th percentiles). Days with half an inch or more are rare.
How July varies from year to year
- Warmest July, 1991-20201994: average high 89°F
- Coolest July1993: average high 75°F
- Wettest July1993: 1.8 in
- Driest July1994: no measurable precipitation
- Highest reading108°F (July 28, 1998)
- Lowest reading39°F (July 7, 2001)
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 | 81°F | 82°F |
| Normal low | 50°F | 54°F | 54°F |
| Wet days | 8 | 3 | 3 |
| Comfortable days | 18 | 13 | 12 |
| Daylight | 15.6 h | 15.3 h | 14.1 h |
Highs change by +8°F from June and +1°F into August.
Nearby alternatives in July
- Warmer: Leavenworth, WA181 mi · high 87°F · 3 wet days
- Cooler: Cannon Beach, OR53 mi · high 67°F · 6 wet days
How Hillsboro ranks in July
- Normal high308th warmest of 378 cities; 4th of 6 in Oregon
- Wet days65th driest of 378
- Comfortable days36th most of 340
What to pack for Hillsboro in July
- Layers – afternoons near 81°F but nights near 54°F
- Sunglasses and sunscreen – about 15.3 hours of daylight and highs near 81°F
Heating and cooling
July has 42 heating degree days and 122 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is Hillsboro in July?
The normal high is 81°F and the normal low is 54°F. From 1991 to 2020 the hottest July reading was 108°F (July 28, 1998).
Does it rain a lot in Hillsboro in July?
About 3 days in July have at least 0.01 in of precipitation, and the normal total is 0.3 in. The wettest July in 1991-2020 was in 1993 (1.8 in); the driest was in 1994, with no measurable precipitation.
Is July a good time to visit Hillsboro?
July ranks 3rd of 12 months on our comfort score for Hillsboro (70 out of 100). It has about 13 comfortable days and about 8 days at 90°F or hotter. The best month is June.
Where the numbers come from
- Temperature and snow depth: Forest Grove (USC00352997), 5.5 mi W of the city center, 180 ft . NOAA normals and daily records, 1991-2020.
- Rain and snowfall: Dilley 2 S (USC00352325), 7.3 mi SW of the city center, 194 ft . NOAA normals and daily records, 1991-2020.
- Frost dates and humidity and wind by hour: Portland-Hillsboro Airport (USW00094261), 2.3 mi ENE of the city center, 204 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Portland International Airport (726980-24229), 19 mi ENE of the city center, 22 ft (173 ft lower than the city). Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).