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October Weather in Lake Oswego, United States

Last updated: June 24, 2025

In Lake Oswego, United States, the average temperature in October hovers around 12°C (53°F), making it a cool yet pleasant time of year. You can expect temperatures to vary between a minimum of -2°C (29°F) and a maximum of 26°C (79°F). During this month, the region sees 105 mm (4.1 in) of precipitation distributed over 12 days, contributing to an average humidity level of 81%.

October Temperature in Lake Oswego

In October in Lake Oswego, the average temperature is 12°C (53°F). Maximums can reach 26°C (79°F), while minimums can drop as low as -2°C (29°F). Travelers should be prepared for fluctuating temperatures and pack layers to stay comfortable.

October Weather in Lake Oswego: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Lake Oswego, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lake Oswego, October typically has an average temperature of 12°C (53°F), with highs reaching up to 26°C (79°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec424146515864697064534641
Data source: Temperature data for Lake Oswego generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in Lake Oswego

In Lake Oswego in October, the precipitation amount is 105 mm (4.1 in) over the course of 12 days.

October Precipitation Trends in Lake Oswego

The chart displays monthly precipitation patterns in Lake Oswego, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Lake Oswego, October typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec16317213511758466862105155184
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Lake Oswego

In Lake Oswego in October, humidity is 81%. With an average temperature of 12°C (53°F), this humidity feels like a chilly dampness enveloping you, making outdoor activities uncomfortable and requiring layers to stay warm while you explore.

October Average Humidity in Lake Oswego

This chart illustrates the average monthly humidity levels in Lake Oswego, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Lake Oswego is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%85%83%83%84%82%74%71%81%87%87%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Lake Oswego

In Lake Oswego in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Lake Oswego.

Maximum UV Index Levels in Lake Oswego for October

The chart shows the monthly maximum UV Index (UVI) for Lake Oswego in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in Lake Oswego typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec23569101087532
Data source: Lake Oswego October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How October Weather in Lake Oswego Compares to Other Months

Weather in Lake Oswego varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Lake Oswego, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Lake Oswego, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)163 mm (6.4 inches)85%low
February Weather5°C (41°F)172 mm (6.8 inches)84%moderate
March Weather8°C (46°F)135 mm (5.3 inches)85%moderate
April Weather11°C (51°F)117 mm (4.6 inches)83%high
May Weather14°C (58°F)58 mm (2.3 inches)83%very high
June Weather18°C (64°F)46 mm (1.8 inches)83%very high
July Weather21°C (69°F)6 mm (0.2 inches)82%very high
August Weather21°C (70°F)8 mm (0.3 inches)74%very high
September Weather18°C (64°F)62 mm (2.4 inches)71%high
October Weather12°C (53°F)105 mm (4.1 inches)81%moderate
November Weather8°C (47°F)155 mm (6.1 inches)87%moderate
December Weather5°C (41°F)183 mm (7.2 inches)87%low

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