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April Weather in Decatur, United States

Last updated: June 24, 2025

In April, the average temperature in Decatur, United States hovers around 17°C (62°F), with a minimum dipping to 0°C (33°F) and peaking at 30°C (87°F). Expect rainfall totaling 146 mm (5.8 in) over about 10 days, contributing to the locale's average humidity of 82%.

April Temperature in Decatur

In April in Decatur, the average temperature is 17°C (62°F), with maximums reaching 30°C (87°F) and minimums dipping as low as 0°C (33°F). It's a great time to visit, as the weather is generally mild and comfortable, perfect for exploring the area.

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 17°C (62°F), with highs reaching up to 30°C (87°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec444956627277808075665148
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 total precipitation amount is 146 mm (5.8 in) over the course of 10 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 146 mm (5.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec11018117814610814710511211112274152
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 82%. With an average temperature of 17°C (62°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and the air thicker, which can be quite exhausting for traveling.

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 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%85%82%83%82%78%67%64%75%87%89%
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.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111109754
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 Weather7°C (44°F)110 mm (4.3 inches)87%moderate
February Weather10°C (50°F)181 mm (7.1 inches)87%high
March Weather13°C (56°F)178 mm (7.0 inches)85%very high
April Weather17°C (62°F)146 mm (5.8 inches)82%very high
May Weather22°C (72°F)108 mm (4.2 inches)83%extreme
June Weather25°C (77°F)147 mm (5.8 inches)82%extreme
July Weather27°C (81°F)105 mm (4.1 inches)78%extreme
August Weather26°C (80°F)112 mm (4.4 inches)67%very high
September Weather24°C (76°F)111 mm (4.4 inches)64%very high
October Weather19°C (66°F)122 mm (4.8 inches)74%high
November Weather11°C (51°F)74 mm (2.9 inches)87%moderate
December Weather9°C (48°F)152 mm (6.0 inches)88%moderate

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