July weather forecast
Lake Oswego, OR

Weather in July

July in Lake Oswego, Oregon, is a warm summer month, with an average temperature ranging between min 52.3°F (11.3°C) and max 80.8°F (27.1°C).

Temperature

In July, the average high-temperature slightly increases from an agreeable 72.1°F (22.3°C) in June to a warm 80.8°F (27.1°C). In Lake Oswego, in July, the average low-temperature is 52.3°F (11.3°C).

Heat index

In July, the average heat index is appraised at 84.2°F (29°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'felt air temperature', or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like metabolic differences, differences in body mass, height, and shape, wind, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In Lake Oswego, the average relative humidity in July is 64%.

Rainfall

July is the month with the least rainfall. Rain falls for 4.8 days and accumulates 0.31" (8mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In Lake Oswego, the average length of the day in July is 15h and 15min.
On the first day of the month, sunrise is at 5:26 am and sunset at 9:02 pm. On the last day of July, sunrise is at 5:53 am and sunset at 8:40 pm PDT.

Sunshine

In Lake Oswego, Oregon, the average sunshine in July is 10.9h.

UV index

With an average maximum UV index of 6, July is the month with the highest UV index in Lake Oswego. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 in July interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in July in Lake Oswego?

The average high-temperature, in July, in Lake Oswego, is 80.8°F (27.1°C), while the average low-temperature is 52.3°F (11.3°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in July is appraised at 84.2°F (29°C).

What is the average humidity in July in Lake Oswego?

In July, the average relative humidity is 64%.

What is the driest month in Lake Oswego?

The month with the least rainfall in Lake Oswego is July, when the rain falls for 4.8 days and typically collects 0.31" (8mm) of precipitation.

How many days does it rain in July in Lake Oswego?

In Lake Oswego, during July, the rain falls for 4.8 days and regularly aggregates up to 0.31" (8mm) of precipitation.

When it does not snow in Lake Oswego?

In Lake Oswego, Oregon, snow does not fall in April through October.

What is the average length of the day in July in Lake Oswego?

In July, the average day length in Lake Oswego, Oregon, is 15h and 15min.

When is the sunrise / sunset in July in Lake Oswego?

On the first day of July in Lake Oswego, Oregon, sunrise is at 5:26 am and sunset at 9:02 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 8:40 pm PDT.

How many hours of sunshine does Lake Oswego have in July?

In Lake Oswego, the average sunshine duration in July is 10.9h.

When is the highest UV index in Lake Oswego?

The month with the highest UV index in Lake Oswego is July, with an average maximum UV index of 6.

How high is the UV index in July in Lake Oswego?

The average daily maximum UV index in July in Lake Oswego is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Lake Oswego, OR

Average temperature in July - Lake Oswego, OR
  • Average high temperature in July: 80.8°F

The warmest month (with the highest average high temperature) is August (81.7°F).
The month with the lowest average high temperature is December (44.4°F).

  • Average low temperature in July: 52.3°F

The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).

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Average pressure in July
Lake Oswego, OR

Average pressure in July - Lake Oswego, 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).

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Average wind speed in July
Lake Oswego, OR

Average wind speed in July - Lake Oswego, OR
  • Average wind speed in July: 4mph

The windiest month (with the highest average wind speed) is January (6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in July
Lake Oswego, OR

Average humidity in July - Lake Oswego, OR
  • Average humidity in July: 64%

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (63%).

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Average rainfall in July
Lake Oswego, OR

Average rainfall in July - Lake Oswego, OR
  • Average rainfall in July: 0.31"

The wettest month (with the highest rainfall) is December (4.57").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days in July
Lake Oswego, OR

Average rainfall days in July - Lake Oswego, OR
  • Average rainfall days in July: 4.8 days

The month with the highest number of rainy days is March (20.4 days).
The month with the least rainy days is July (4.8 days).

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Average snowfall in July
Lake Oswego, OR

Average snowfall in July - Lake Oswego, OR
  • Average snowfall in July: 0"

The month with the highest snowfall is March (1.46").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in July
Lake Oswego, OR

Average snowfall days in July - Lake Oswego, 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).

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Average daylight in July /
Average sunshine in July
Lake Oswego, OR

Average daylight in July / Average sunshine in July - Lake Oswego, OR
  • Average daylight in July: 15h and 15min

The month with the longest days is June (Average daylight: 15h and 37min).
The month with the shortest days is December (Average daylight: 8h and 47min).

  • Average sunshine in July: 10h and 54min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

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Average sunshine days in July
Lake Oswego, OR

Average sunshine days in July - Lake Oswego, OR
  • Average sunshine days in July: 23.9 days

The month with the most sunshine days is July (23.9 days).
The month with the least sunshine days is February (8.3 days).

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Average UV index in July
Lake Oswego, OR

Average UV index in July - Lake Oswego, 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).

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Average cloud cover in July
Lake Oswego, OR

Average cloud cover in July - Lake Oswego, OR
  • Average cloud cover in July: 25

The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 22).

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Average visibility in July
Lake Oswego, OR

Average visibility in July - Lake Oswego, OR
  • Average visibility in July: 6mi

The months with the highest visibility are July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, May, June, November and December (5mi).

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