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May Weather in Duncan Falls, United States

Last updated: June 24, 2025

In Duncan Falls, United States, the average temperature in May hovers around 18°C (64°F), with extremes ranging from a chilly -1°C (30°F) to a balmy 32°C (90°F). Expect 141 mm (5.5 in) of precipitation spread over about 16 days, contributing to an average humidity level of 82%. Whether you're planning an adventure or just curious, this weather snapshot gives you a clear picture of what to anticipate!

May Temperature in Duncan Falls

In May in Duncan Falls, the average temperature is 18°C (64°F). Maximum temperatures can reach 32°C (90°F), while minimums can drop as low as -1°C (30°F). Be prepared for a wide range of temperatures if you plan to travel during this time!

May Weather in Duncan Falls: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Duncan Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Duncan Falls, May typically has an average temperature of 18°C (64°F), with highs reaching up to 32°C (90°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec323643536471767369584337
Data source: Temperature data for Duncan Falls 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 Duncan Falls

In Duncan Falls in May, the precipitation amount is 141 mm (5.5 in) accumulated over 16 days.

May Precipitation Trends in Duncan Falls

The chart displays monthly precipitation patterns in Duncan Falls, 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 Duncan Falls, May typically receives around 141 mm (5.5 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec8811911713814117413311310610794110
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Duncan Falls

In Duncan Falls in May humidity is 82%. With an average temperature of 18°C (64°F), this humidity feels like a warm, muggy embrace that can make exploring the area feel stifling, leaving travelers drenched in sweat and longing for respite in the shade.

May Average Humidity in Duncan Falls

This chart illustrates the average monthly humidity levels in Duncan Falls, 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 Duncan Falls is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%88%87%82%84%82%73%74%81%89%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Duncan Falls

In Duncan Falls 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 Duncan Falls.

Maximum UV Index Levels in Duncan Falls for May

The chart shows the monthly maximum UV Index (UVI) for Duncan Falls 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 Duncan Falls typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098643
Data source: Duncan Falls 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 Duncan Falls Compares to Other Months

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

This table compares monthly weather conditions in Duncan Falls, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)88 mm (3.5 inches)88%moderate
February Weather2°C (36°F)119 mm (4.7 inches)88%moderate
March Weather6°C (44°F)117 mm (4.6 inches)88%high
April Weather12°C (53°F)138 mm (5.4 inches)86%very high
May Weather18°C (64°F)141 mm (5.5 inches)82%very high
June Weather22°C (72°F)174 mm (6.9 inches)84%very high
July Weather24°C (76°F)133 mm (5.2 inches)82%very high
August Weather23°C (74°F)113 mm (4.5 inches)73%very high
September Weather20°C (69°F)106 mm (4.2 inches)73%very high
October Weather15°C (58°F)107 mm (4.2 inches)81%high
November Weather6°C (43°F)94 mm (3.7 inches)89%moderate
December Weather3°C (38°F)110 mm (4.3 inches)86%moderate

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