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May Weather in Annandale, United States

Last updated: June 24, 2025

In May, the average temperature in Annandale, United States hovers around 16°C (61°F), offering a pleasant climate for visitors. However, be prepared for swings in temperature, as it can dip as low as 0°C (32°F) and soar to a sizzling 33°C (92°F). During this month, expect 134 mm (5.3 in) of precipitation spread across 13 days, contributing to a relatively high average humidity of 75%.

May Temperature in Annandale

In May in Annandale, the average temperature is 16°C (61°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop as low as 0°C (32°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates May temperature patterns in Annandale, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Annandale, May typically has an average temperature of 16°C (61°F), with highs reaching up to 33°C (92°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec323540516170767468584336
Data source: Temperature data for Annandale 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 Annandale

In Annandale in May, the precipitation amount is 134 mm (5.3 in) recorded over the course of 13 days.

May Precipitation Trends in Annandale

The chart displays monthly precipitation patterns in Annandale, 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 Annandale, May typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec7210610110813410012813610313089109
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Annandale

In Annandale in May humidity is 75%. With an average temperature of 16°C (61°F), this humidity feels like a warm, muggy embrace, making traveling somewhat uncomfortable as you may find yourself constantly adjusting your clothing and seeking shade to escape the sticky air.

May Average Humidity in Annandale

This chart illustrates the average monthly humidity levels in Annandale, 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 Annandale is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%85%83%75%74%65%62%66%79%87%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Annandale

In Annandale 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 Annandale.

Maximum UV Index Levels in Annandale for May

The chart shows the monthly maximum UV Index (UVI) for Annandale 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 Annandale typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Annandale 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 Annandale Compares to Other Months

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

This table compares monthly weather conditions in Annandale, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)72 mm (2.8 inches)87%moderate
February Weather2°C (35°F)105 mm (4.2 inches)85%moderate
March Weather5°C (41°F)101 mm (4.0 inches)85%high
April Weather11°C (51°F)108 mm (4.2 inches)83%very high
May Weather16°C (61°F)134 mm (5.3 inches)75%very high
June Weather21°C (70°F)100 mm (3.9 inches)73%very high
July Weather25°C (77°F)128 mm (5.0 inches)65%very high
August Weather23°C (74°F)136 mm (5.4 inches)62%very high
September Weather20°C (68°F)103 mm (4.1 inches)66%very high
October Weather14°C (58°F)130 mm (5.1 inches)79%high
November Weather6°C (43°F)89 mm (3.5 inches)87%moderate
December Weather2°C (36°F)109 mm (4.3 inches)85%low

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