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May Weather in Fort Smith, Canada

Last updated: June 18, 2025

In May, the average temperature in Fort Smith, Canada hovers around 8°C (47°F). Expect a chilling minimum of -15°C (5°F) and the possibility of a warm maximum reaching 32°C (90°F). During this period, anticipate 32 mm (1.3 in) of precipitation spread over 7 days, with an average humidity level of 68%.

May Temperature in Fort Smith

In May in Fort Smith, the average temperature is 8°C (47°F), with maximums reaching up to 32°C (90°F) and minimums dropping as low as -15°C (5°F). Be sure to pack layers to prepare for a wide range of temperatures during your travels!

May Weather in Fort Smith: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Fort Smith, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fort Smith, May typically has an average temperature of 8°C (47°F), with highs reaching up to 32°C (90°F) and lows dropping to around -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec-5-7102647606460473412-4
Data source: Temperature data for Fort Smith 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 Fort Smith

In Fort Smith in May, the precipitation amount is 32 mm (1.3 in) over the course of 7 days.

May Precipitation Trends in Fort Smith

The chart displays monthly precipitation patterns in Fort Smith, 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 Fort Smith, May typically receives around 32 mm (1.3 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec221414173266637648313020
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Fort Smith

In Fort Smith in May, humidity is 68%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that can make outdoor excursions uncomfortable, potentially leaving travelers feeling colder than the thermometer suggests.

May Average Humidity in Fort Smith

This chart illustrates the average monthly humidity levels in Fort Smith, 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 Fort Smith is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec96%96%93%82%68%60%73%80%82%90%95%98%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Fort Smith

In Fort Smith in May, 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 Fort Smith.

Maximum UV Index Levels in Fort Smith for May

The chart shows the monthly maximum UV Index (UVI) for Fort Smith 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 Fort Smith typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123456664211
Data source: Fort Smith 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 Fort Smith Compares to Other Months

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

This table compares monthly weather conditions in Fort Smith, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-21°C (-5°F)22 mm (0.8 inches)96%low
February Weather-22°C (-6°F)14 mm (0.5 inches)96%low
March Weather-12°C (10°F)14 mm (0.6 inches)93%moderate
April Weather-3°C (27°F)17 mm (0.7 inches)82%moderate
May Weather8°C (47°F)32 mm (1.3 inches)68%moderate
June Weather16°C (61°F)66 mm (2.6 inches)60%high
July Weather18°C (64°F)63 mm (2.5 inches)73%high
August Weather16°C (60°F)76 mm (3.0 inches)80%high
September Weather9°C (48°F)48 mm (1.9 inches)82%moderate
October Weather1°C (34°F)31 mm (1.2 inches)90%low
November Weather-11°C (12°F)30 mm (1.2 inches)95%low
December Weather-20°C (-3°F)20 mm (0.8 inches)98%low

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