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April Weather in Fort Smith, United States

Last updated: June 24, 2025

In Fort Smith, United States, the average temperature in April is a comfortable 15°C (60°F). However, be prepared for a range of temperatures, as it can drop to a chilly -2°C (29°F) or soar to a warm 32°C (90°F). Expect some rain as well, with an average precipitation of 157 mm (6.2 in) over approximately 11 days. Don't forget, the average humidity during this time is quite high at 78%, so plan accordingly!

April Temperature in Fort Smith

In April in Fort Smith, the average temperature is 15°C (60°F). Maximum temperatures can reach up to 32°C (90°F), while minimums can drop as low as -2°C (29°F). Be prepared for a wide range of temperatures when traveling during this month.

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 15°C (60°F), with highs reaching up to 32°C (90°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec404354596978817975625045
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 157 mm (6.2 in) over a span of 11 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 157 mm (6.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec981231421572139198132781518798
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 78%. With an average temperature of 15°C (60°F), this humidity feels like a warm, damp embrace that can make outdoor activities a bit uncomfortable, highlighting the importance of staying hydrated and taking breaks in the shade while exploring.

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 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%77%78%82%81%75%61%59%69%82%88%
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 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 Fort Smith.

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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46710111111109754
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 Weather4°C (40°F)98 mm (3.9 inches)82%moderate
February Weather6°C (43°F)123 mm (4.8 inches)79%high
March Weather12°C (54°F)141 mm (5.6 inches)77%high
April Weather15°C (60°F)157 mm (6.2 inches)78%very high
May Weather21°C (70°F)213 mm (8.4 inches)82%extreme
June Weather25°C (78°F)91 mm (3.6 inches)81%extreme
July Weather27°C (81°F)98 mm (3.8 inches)75%extreme
August Weather26°C (79°F)132 mm (5.2 inches)61%very high
September Weather24°C (76°F)78 mm (3.1 inches)59%very high
October Weather17°C (63°F)151 mm (5.9 inches)69%high
November Weather10°C (50°F)87 mm (3.4 inches)82%moderate
December Weather7°C (46°F)98 mm (3.9 inches)87%moderate

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