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October Weather in Juneau, United States

Last updated: June 24, 2025

In October, the average temperature in Juneau, United States hovers around 10°C (51°F), with lows dipping to a chilly -5°C (24°F) and soaring highs reaching 29°C (85°F). Expect about 112 mm (4.4 in) of precipitation spread over 13 days, contributing to a notable average humidity of 83%. Prepare for a month that’s diverse in weather, blending cool breezes with the occasional warm spell!

October Temperature in Juneau

In October in Juneau, the average temperature is 10°C (51°F). Maximums can reach 29°C (85°F), while minimums can drop to as low as -5°C (24°F). This temperature range means that travelers should be prepared for a mix of warm and chilly weather during their visit.

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

The chart illustrates October temperature patterns in Juneau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Juneau, October typically has an average temperature of 10°C (51°F), with highs reaching up to 29°C (85°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec202134455869737064513628
Data source: Temperature data for Juneau 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 Juneau

In Juneau in October, the precipitation amount is 112 mm (4.4 in) over the course of 13 days.

October Precipitation Trends in Juneau

The chart displays monthly precipitation patterns in Juneau, 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 Juneau, October typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec48505810412011010397931124546
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Juneau

In Juneau 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 Juneau

This chart illustrates the average monthly humidity levels in Juneau, 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 Juneau 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 Juneau

In Juneau 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 Juneau.

Maximum UV Index Levels in Juneau for October

The chart shows the monthly maximum UV Index (UVI) for Juneau 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 Juneau typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101097532
Data source: Juneau 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 Juneau Compares to Other Months

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

This table compares monthly weather conditions in Juneau, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)48 mm (1.9 inches)85%moderate
February Weather-6°C (22°F)50 mm (2.0 inches)85%moderate
March Weather1°C (35°F)58 mm (2.3 inches)85%moderate
April Weather7°C (45°F)104 mm (4.1 inches)85%very high
May Weather15°C (59°F)120 mm (4.7 inches)78%very high
June Weather21°C (69°F)110 mm (4.3 inches)80%very high
July Weather23°C (74°F)102 mm (4.0 inches)78%very high
August Weather21°C (71°F)97 mm (3.8 inches)76%very high
September Weather18°C (64°F)93 mm (3.6 inches)79%high
October Weather10°C (51°F)112 mm (4.4 inches)83%moderate
November Weather2°C (36°F)45 mm (1.8 inches)88%moderate
December Weather-2°C (29°F)46 mm (1.8 inches)81%low

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