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April Weather in Decatur, United States

Last updated: June 24, 2025

In Decatur, United States, the average temperature for April hovers around 14°C (57°F). Expect a minimum dip to -4°C (25°F) and a maximum rise to 31°C (89°F). During this month, precipitation totals around 183 mm (7.2 in), spread over approximately 11 days, all while the average humidity lingers at a comfortable 78%.

April Temperature in Decatur

In April in Decatur, the average temperature is 14°C (57°F), with maximums reaching up to 31°C (89°F) and minimums dropping as low as -4°C (25°F). This diverse range in temperatures makes Decatur a destination where travelers should prepare for both warm days and chilly nights.

April Weather in Decatur: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Decatur, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Decatur, April typically has an average temperature of 14°C (57°F), with highs reaching up to 31°C (89°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec384052576776807774604843
Data source: Temperature data for Decatur 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 Decatur

In Decatur in April, the precipitation amount is 183 mm (7.2 in), occurring over the course of 11 days.

April Precipitation Trends in Decatur

The chart displays monthly precipitation patterns in Decatur, 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 Decatur, April typically receives around 183 mm (7.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec849514318317589101153711626670
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Decatur

In Decatur in April, humidity is 78%. With an average temperature of 14°C (57°F), this humidity feels like a damp blanket wrapping around you, making outdoor exploration a bit uncomfortable but still enjoyable if you stay hydrated and plan for breaks in the shade.

April Average Humidity in Decatur

This chart illustrates the average monthly humidity levels in Decatur, 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 Decatur is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%78%76%78%83%83%78%68%64%70%83%87%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Decatur

In Decatur 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 Decatur.

Maximum UV Index Levels in Decatur for April

The chart shows the monthly maximum UV Index (UVI) for Decatur 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 Decatur typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Decatur 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 Decatur Compares to Other Months

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

This table compares monthly weather conditions in Decatur, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)84 mm (3.3 inches)81%moderate
February Weather5°C (41°F)95 mm (3.8 inches)78%high
March Weather11°C (52°F)143 mm (5.6 inches)76%high
April Weather14°C (57°F)183 mm (7.2 inches)78%very high
May Weather20°C (68°F)175 mm (6.9 inches)83%very high
June Weather25°C (76°F)88 mm (3.5 inches)83%extreme
July Weather26°C (80°F)101 mm (4.0 inches)78%extreme
August Weather25°C (77°F)153 mm (6.0 inches)68%very high
September Weather23°C (74°F)71 mm (2.8 inches)64%very high
October Weather16°C (60°F)162 mm (6.4 inches)70%high
November Weather9°C (48°F)66 mm (2.6 inches)83%moderate
December Weather6°C (44°F)70 mm (2.8 inches)87%moderate

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