Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
Portland observes a slight ascent in average high-temperatures during July, adjusting from an agreeable 72.1°F (22.3°C) in June to a warm 80.6°F (27°C). The average low-temperature of 52.5°F (11.4°C) in July represents a significant drop from the daily high.Heat index
During July, the heat index is estimated at 82.4°F (28°C). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.Factoring in the heat index, values are geared towards shaded areas with light breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gauges the sensation of temperature factoring in the air's moisture content. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Humidity
The average relative humidity in July is 64%.Rainfall
The month with the least rainfall in Portland is July, when the rain falls for 4.9 days and typically collects 0.31" (8mm) of precipitation.Snowfall
In Portland, Oregon, snow does not fall in April through October.Daylight
In July, the average length of the day is 15h and 16min.On the first day of July, sunrise is at 5:26 am and sunset at 9:03 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 8:39 pm PDT.
Sunshine
In July, the average sunshine is 10.8h.UV index
The month with the highest UV index is July, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 6 in July leads to these recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
What is the temperature in July in Portland?
What is the average humidity in July in Portland?
What is the driest month in Portland?
How many days does it rain in July in Portland?
When it does not snow in Portland?
How many hours of daylight does Portland have in July?
When is the sunrise / sunset in July in Portland?
How many hours of sunshine does Portland have in July?
When is the highest UV index in Portland?
What is the UV index intensity in July in Portland?
Average temperature in July
Portland, OR
- Average high temperature in July: 80.6°F
The warmest month (with the highest average high temperature) is August (81.5°F).
The month with the lowest average high temperature is December (44.1°F).
- Average low temperature in July: 52.5°F
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).
Average pressure in July
Portland, OR
- Average pressure in July: 30.03"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in July
Portland, OR
- Average wind speed in July: 4.1mph
The windiest month (with the highest average wind speed) is January (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in July
Portland, OR
- Average humidity in July: 64%
The months with the highest relative humidity are January, February and December (83%).
The month with the lowest relative humidity is August (63%).
Average rainfall in July
Portland, OR
- Average rainfall in July: 0.31"
The wettest month (with the highest rainfall) is December (4.53").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in July
Portland, OR
- Average rainfall days in July: 4.9 days
The month with the highest number of rainy days is March (20.4 days).
The month with the least rainy days is July (4.9 days).
Average snowfall in July
Portland, OR
- Average snowfall in July: 0"
The month with the highest snowfall is March (1.5").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in July
Portland, OR
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in July /
Average sunshine in July
Portland, OR
- Average daylight in July: 15h and 2min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in July: 10h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in July
Portland, OR
- Average sunshine days in July: 23.8 days
The months with the most sunshine days are July and August (23.8 days).
The month with the least sunshine days is March (8.3 days).
Average UV index in July
Portland, OR
- Average UV index in July: 6
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in July
Portland, OR
- Average cloud cover in July: 26
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in July
Portland, OR
- Average visibility in July: 6mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (5mi).
Portland, Oregon, USA
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