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March Weather in Juneau, United States

Last updated: June 24, 2025

In March, the average temperature in Juneau, United States hovers around 1°C (35°F). You can expect a chilly minimum of -24°C (-12°F), while the warmer days might reach up to 20°C (68°F). This month sees an average precipitation of 58 mm (2.3 in) spread across 9 days, contributing to a notably high average humidity of 85%. 🌧️

March Temperature in Juneau

In March in Juneau, the average temperature is 1°C (35°F). The maximum can reach 20°C (68°F), while the minimum can drop as low as -24°C (-12°F). It's essential to pack for a wide range of temperatures when traveling to Juneau during this time.

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

The chart illustrates March 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, March typically has an average temperature of 1°C (35°F), with highs reaching up to 20°C (68°F) and lows dropping to around -24°C (-12°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.

March Precipitation in Juneau

In Juneau in March, the precipitation amount is 58 mm (2.3 in) spread over 9 days.

March Precipitation Trends in Juneau

The chart displays monthly precipitation patterns in Juneau, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Juneau, March typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec48505810412011010397931124546
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Juneau

In Juneau in March humidity is 85%. With an average temperature of 1°C (35°F), this humidity feels like a chilly blanket wrapping around you, making outdoor adventures damp and uncomfortable, especially for travelers unprepared for such a heavy and cold atmosphere.

March Average Humidity in Juneau

This chart illustrates the average monthly humidity levels in Juneau, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Juneau is approximately 85%, 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 March generated using information from the Copernicus Climate Change Service.

March UV Index in Juneau

In Juneau in March, 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 March

The chart shows the monthly maximum UV Index (UVI) for Juneau in March, 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 March, the maximum UV index in Juneau typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101097532
Data source: Juneau March 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 March 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 March’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 March’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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