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May Weather in Anchorage, United States

Last updated: June 24, 2025

In May, the average temperature in Anchorage, United States hovers around 20°C (67°F), providing a pleasant climate for outdoor activities. However, temperatures can vary significantly, with a brisk minimum of 0°C (32°F) and a warm maximum reaching up to 33°C (92°F). Expect about 125 mm (4.9 in) of precipitation spread over 15 days, contributing to an average humidity level of 79%. Perfect for those who enjoy a bit of variety in their weather!

May Temperature in Anchorage

In May in Anchorage, the average temperature is 20°C (67°F), with maximums reaching up to 33°C (92°F) and minimums dropping as low as 0°C (32°F). This range of temperatures makes Anchorage an ideal destination for travelers who enjoy a mix of warm days and cooler evenings.

May Weather in Anchorage: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Anchorage, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Anchorage, May typically has an average temperature of 20°C (67°F), with highs reaching up to 33°C (92°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec353947566774787671604541
Data source: Temperature data for Anchorage 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.

May Precipitation in Anchorage

In Anchorage in May, the precipitation amount is 125 mm (4.9 in) over a span of 15 days.

May Precipitation Trends in Anchorage

The chart displays monthly precipitation patterns in Anchorage, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Anchorage, May typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec90137138141125158989611810391110
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Anchorage

In Anchorage in May, humidity is 79%. With an average temperature of 20°C (67°F), this humidity feels like a warm, heavy blanket wrapping around you, making traveling a bit sluggish and requiring frequent breaks to stay refreshed.

May Average Humidity in Anchorage

This chart illustrates the average monthly humidity levels in Anchorage, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Anchorage is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Anchorage

In Anchorage in May, 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 Anchorage.

Maximum UV Index Levels in Anchorage for May

The chart shows the monthly maximum UV Index (UVI) for Anchorage in May, 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 May, the maximum UV index in Anchorage typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110108743
Data source: Anchorage May 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 May Weather in Anchorage Compares to Other Months

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

This table compares monthly weather conditions in Anchorage, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)90 mm (3.5 inches)87%moderate
February Weather4°C (40°F)137 mm (5.4 inches)85%moderate
March Weather9°C (48°F)138 mm (5.4 inches)86%high
April Weather13°C (56°F)141 mm (5.6 inches)84%very high
May Weather20°C (67°F)125 mm (4.9 inches)79%very high
June Weather23°C (75°F)158 mm (6.2 inches)82%extreme
July Weather26°C (78°F)98 mm (3.8 inches)79%very high
August Weather24°C (76°F)96 mm (3.8 inches)70%very high
September Weather22°C (71°F)118 mm (4.7 inches)69%very high
October Weather16°C (60°F)103 mm (4.1 inches)76%high
November Weather7°C (45°F)91 mm (3.6 inches)88%moderate
December Weather5°C (41°F)110 mm (4.3 inches)87%moderate

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