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October Weather in Joint Base Lewis McChord, United States

Last updated: June 24, 2025

In October, the average temperature in Joint Base Lewis McChord, United States hovers around 10°C (51°F). However, temperatures can vary significantly, with minimums dipping to -3°C (28°F) and maximums reaching up to 23°C (74°F). Additionally, prepare for an average of 142 mm (5.6 in) of precipitation spread over 14 days, accompanied by a relatively high average humidity of 83%.

October Temperature in Joint Base Lewis McChord

In October in Joint Base Lewis McChord, the average temperature is 10°C (51°F). Maximums can reach 23°C (74°F) and minimums can be as low as -3°C (28°F). Pack for varied weather conditions to make the most of your travels!

October Weather in Joint Base Lewis McChord: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Joint Base Lewis McChord, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Joint Base Lewis McChord, October typically has an average temperature of 10°C (51°F), with highs reaching up to 23°C (74°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec413944495560656560504541
Data source: Temperature data for Joint Base Lewis McChord 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 Joint Base Lewis McChord

In Joint Base Lewis McChord in October, the precipitation amount is 142 mm (5.6 in) occurring over a span of 14 days.

October Precipitation Trends in Joint Base Lewis McChord

The chart displays monthly precipitation patterns in Joint Base Lewis McChord, 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 Joint Base Lewis McChord, October typically receives around 142 mm (5.6 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec1831891361186858111390142180201
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Joint Base Lewis McChord

In Joint Base Lewis McChord in October, humidity is 83%. With an average temperature of 10°C (51°F), this humidity feels like a chilly dampness that permeates your clothes, making it essential to dress in layers for travel, as the cool air combined with the high humidity can create an uncomfortable and bone-chilling atmosphere.

October Average Humidity in Joint Base Lewis McChord

This chart illustrates the average monthly humidity levels in Joint Base Lewis McChord, 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 Joint Base Lewis McChord 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 Joint Base Lewis McChord

In Joint Base Lewis McChord 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 Joint Base Lewis McChord.

Maximum UV Index Levels in Joint Base Lewis McChord for October

The chart shows the monthly maximum UV Index (UVI) for Joint Base Lewis McChord 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 Joint Base Lewis McChord typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987532
Data source: Joint Base Lewis McChord 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 Joint Base Lewis McChord Compares to Other Months

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

This table compares monthly weather conditions in Joint Base Lewis McChord, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)183 mm (7.2 inches)86%low
February Weather4°C (40°F)189 mm (7.4 inches)84%moderate
March Weather7°C (44°F)136 mm (5.4 inches)85%moderate
April Weather9°C (49°F)118 mm (4.7 inches)83%high
May Weather13°C (55°F)68 mm (2.7 inches)84%very high
June Weather16°C (60°F)58 mm (2.3 inches)84%very high
July Weather18°C (65°F)11 mm (0.4 inches)82%very high
August Weather18°C (66°F)13 mm (0.5 inches)73%very high
September Weather16°C (60°F)90 mm (3.5 inches)74%high
October Weather10°C (51°F)142 mm (5.6 inches)83%moderate
November Weather7°C (45°F)180 mm (7.1 inches)86%moderate
December Weather5°C (41°F)201 mm (7.9 inches)87%low

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