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October Weather in Oregon, United States

Last updated: June 24, 2025

In October, the average temperature in Oregon, United States hovers around 11°C (51°F). Expect a range that can dip to a chilly -5°C (23°F) or rise to a warm 30°C (86°F). Be prepared for 117 mm (4.6 in) of precipitation spread over 14 days, and a notably high average humidity of 83%.

October Temperature in Oregon

In October, in Oregon, the average temperature is 11°C (51°F). The maximum can reach 30°C (86°F), and the minimum can be as low as -5°C (23°F). This variability makes Oregon an ideal destination for travelers seeking a mix of mild and extreme weather experiences.

October Weather in Oregon: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Oregon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oregon, October typically has an average temperature of 11°C (51°F), with highs reaching up to 30°C (86°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec212336465971757165513629
Data source: Temperature data for Oregon 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 Oregon

In Oregon in October, the precipitation amount is 117 mm (4.6 in) spread over 14 days.

October Precipitation Trends in Oregon

The chart displays monthly precipitation patterns in Oregon, 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 Oregon, October typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec52555895133121841111201174346
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Oregon

In Oregon in October, humidity is 83%. With an average temperature of 11°C (51°F), this humidity feels like a chilly dampness that clings to your skin, making any outdoor adventures a bit uncomfortable and best enjoyed with layered clothing and a light raincoat.

October Average Humidity in Oregon

This chart illustrates the average monthly humidity levels in Oregon, 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 Oregon is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Oregon

In Oregon 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 Oregon.

Maximum UV Index Levels in Oregon for October

The chart shows the monthly maximum UV Index (UVI) for Oregon 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 Oregon typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101098532
Data source: Oregon 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 Oregon Compares to Other Months

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

This table compares monthly weather conditions in Oregon, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)52 mm (2.1 inches)85%moderate
February Weather-5°C (23°F)54 mm (2.1 inches)85%moderate
March Weather2°C (36°F)58 mm (2.3 inches)85%moderate
April Weather8°C (46°F)95 mm (3.7 inches)85%very high
May Weather15°C (60°F)133 mm (5.2 inches)78%very high
June Weather21°C (71°F)121 mm (4.8 inches)80%very high
July Weather24°C (75°F)84 mm (3.3 inches)78%very high
August Weather22°C (71°F)111 mm (4.4 inches)76%very high
September Weather18°C (65°F)120 mm (4.7 inches)79%very high
October Weather11°C (51°F)117 mm (4.6 inches)83%moderate
November Weather2°C (37°F)43 mm (1.7 inches)88%moderate
December Weather-2°C (29°F)46 mm (1.8 inches)81%low

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