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October Weather in Cathlamet, United States

Last updated: June 24, 2025

In October, the average temperature in Cathlamet, United States hovers around 11°C (52°F), making it a cool yet pleasant time of year. Expect temperatures to range from a chilly 1°C (34°F) to a comfortable 21°C (71°F). While you're likely to encounter about 151 mm (5.9 in) of precipitation over the course of 13 days, the average humidity sits at a notable 83%. Prepare for a refreshing blend of cool air and occasional showers!

October Temperature in Cathlamet

In October in Cathlamet, the average temperature is 11°C (52°F). The maximum can reach 21°C (71°F), and the minimum can be as low as 1°C (34°F). It's an ideal time to explore Cathlamet while enjoying mild weather and a pleasant atmosphere.

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

The chart illustrates October temperature patterns in Cathlamet, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cathlamet, October typically has an average temperature of 11°C (52°F), with highs reaching up to 21°C (71°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec424145495459616360524641
Data source: Temperature data for Cathlamet 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 Cathlamet

In Cathlamet in October, the precipitation amount is 151 mm (5.9 in) over the course of 13 days.

October Precipitation Trends in Cathlamet

The chart displays monthly precipitation patterns in Cathlamet, 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 Cathlamet, October typically receives around 151 mm (5.9 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec2141921491347463111291151212230
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Cathlamet

In Cathlamet in October humidity is 83%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable, often leading travelers to seek shelter indoors or to dress in layered clothing to stay warm while exploring the area.

October Average Humidity in Cathlamet

This chart illustrates the average monthly humidity levels in Cathlamet, 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 Cathlamet is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%85%83%84%84%82%73%74%83%86%87%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Cathlamet

In Cathlamet 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 Cathlamet.

Maximum UV Index Levels in Cathlamet for October

The chart shows the monthly maximum UV Index (UVI) for Cathlamet 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 Cathlamet typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2356910987532
Data source: Cathlamet 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 Cathlamet Compares to Other Months

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

This table compares monthly weather conditions in Cathlamet, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (42°F)214 mm (8.4 inches)86%low
February Weather5°C (41°F)192 mm (7.5 inches)84%moderate
March Weather7°C (45°F)149 mm (5.9 inches)85%moderate
April Weather10°C (50°F)134 mm (5.3 inches)83%high
May Weather12°C (55°F)74 mm (2.9 inches)84%very high
June Weather15°C (59°F)62 mm (2.5 inches)84%very high
July Weather16°C (62°F)11 mm (0.4 inches)82%very high
August Weather17°C (63°F)12 mm (0.5 inches)73%very high
September Weather16°C (60°F)91 mm (3.6 inches)74%high
October Weather11°C (52°F)151 mm (5.9 inches)83%moderate
November Weather8°C (46°F)212 mm (8.3 inches)86%moderate
December Weather5°C (41°F)229 mm (9.0 inches)87%low

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