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April Weather in Fort Smith, Canada

Last updated: June 18, 2025

In April, the average temperature in Fort Smith, Canada hovers around -3°C (27°F). Expect minimum temperatures plummeting to -26°C (-14°F) and a maximum of 19°C (66°F). The month brings about 17 mm (0.7 in) of precipitation spread over 4 days, while the air maintains a high humidity level of 82%.

April Temperature in Fort Smith

In April in Fort Smith, the average temperature is -3°C (27°F). The maximum can reach 19°C (66°F) and the minimum can be as low as -26°C (-14°F). This wide temperature range makes it essential for travelers to pack both warm clothing and lighter layers to adapt to the variable weather.

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

The chart illustrates April 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, April typically has an average temperature of -3°C (27°F), with highs reaching up to 19°C (66°F) and lows dropping to around -26°C (-14°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.

April Precipitation in Fort Smith

In Fort Smith in April, the precipitation amount is 17 mm (0.7 in) over a span of 4 days.

April Precipitation Trends in Fort Smith

The chart displays monthly precipitation patterns in Fort Smith, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Fort Smith, April typically receives around 17 mm (0.7 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec221414173266637648313020
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Fort Smith

In Fort Smith in April, humidity is 82%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that seeps into your bones, making traveling uncomfortable and necessitating extra layers to stay warm while navigating through the damp air.

April Average Humidity in Fort Smith

This chart illustrates the average monthly humidity levels in Fort Smith, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Fort Smith is approximately 82%, 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 April generated using information from the Copernicus Climate Change Service.

April UV Index in Fort Smith

In Fort Smith in April, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Fort Smith for better planning.

Maximum UV Index Levels in Fort Smith for April

The chart shows the monthly maximum UV Index (UVI) for Fort Smith in April, 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 April, the maximum UV index in Fort Smith typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123456664211
Data source: Fort Smith April 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 April 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 April’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 April’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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