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June Weather in Juneau, United States

Last updated: June 24, 2025

In Juneau, United States, the average temperature in June hovers around 21°C (69°F). However, be prepared for a range, as temperatures can drop to a minimum of 6°C (43°F) and peak at a maximum of 34°C (93°F). During this time, expect 110 mm (4.3 in) of precipitation over 12 days, contributing to an average humidity of 80%. Stay hydrated and enjoy the season!

June Temperature in Juneau

In June in Juneau, the average temperature is 21°C (69°F). Maximums can reach 34°C (93°F), and minimums can dip as low as 6°C (43°F). This makes Juneau a great destination for travelers looking for mild weather with a mix of warm days and cool nights.

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

The chart illustrates June 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, June typically has an average temperature of 21°C (69°F), with highs reaching up to 34°C (93°F) and lows dropping to around 6°C (43°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.

June Precipitation in Juneau

In Juneau in June, the precipitation amount is 110 mm (4.3 in) over a span of 12 days.

June Precipitation Trends in Juneau

The chart displays monthly precipitation patterns in Juneau, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Juneau, June typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec48505810412011010397931124546
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Juneau

In Juneau in June, humidity is 80%. With an average temperature of 21°C (69°F), this humidity feels like a warm, sticky embrace, making outdoor activities a bit challenging for travelers as the air becomes heavy and can lead to fatigue while sightseeing.

June Average Humidity in Juneau

This chart illustrates the average monthly humidity levels in Juneau, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Juneau is approximately 80%, 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 June generated using information from the Copernicus Climate Change Service.

June UV Index in Juneau

In Juneau in June, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Juneau.

Maximum UV Index Levels in Juneau for June

The chart shows the monthly maximum UV Index (UVI) for Juneau in June, 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 June, the maximum UV index in Juneau typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101097532
Data source: Juneau June 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 June 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 June’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 June’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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