April Weather in Decatur, United States

Last updated: June 24, 2025

In Decatur, United States, the average temperature in April hovers around 8°C (48°F). During this time, temperatures can dip as low as -7°C (20°F) or rise to a balmy 28°C (82°F). Expect to encounter 109 mm (4.3 in) of precipitation over about 14 days, with humidity levels averaging a brisk 87%.

April Temperature in Decatur

In April in Decatur, the average temperature is 8°C (48°F), with maximums reaching 28°C (82°F) and minimums dropping as low as -7°C (20°F). Travelers should be prepared for a wide range of temperatures when visiting during this month.

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 8°C (48°F), with highs reaching up to 28°C (82°F) and lows dropping to around -7°C (20°F).

Data source: Temperature data for Decatur generated using information from the Copernicus Climate Change Service.

April Precipitation in Decatur

In Decatur in April, the precipitation amount is 109 mm (4.3 in) over the course of 14 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 109 mm (4.3 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

April Humidity in Decatur

In Decatur in April humidity is 87%. With an average temperature of 8°C (48°F), this humidity feels like a damp chill wrapping around you, making it essential to dress warmly while traveling to fully enjoy the sights without being hindered by the discomfort of the cool, moist air.

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 87%, offering insight into how humid the weather typically is during this month.

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 is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to 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 8, which falls under the very high exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	74 mm (2.9 inches)	85%	moderate
February Weather	-2°C (29°F)	77 mm (3.0 inches)	85%	moderate
March Weather	3°C (39°F)	90 mm (3.5 inches)	86%	high
April Weather	8°C (48°F)	109 mm (4.3 inches)	87%	very high
May Weather	16°C (61°F)	168 mm (6.6 inches)	81%	very high
June Weather	22°C (71°F)	137 mm (5.4 inches)	82%	very high
July Weather	24°C (75°F)	119 mm (4.7 inches)	81%	very high
August Weather	22°C (72°F)	95 mm (3.7 inches)	79%	very high
September Weather	19°C (67°F)	84 mm (3.3 inches)	78%	very high
October Weather	12°C (54°F)	144 mm (5.7 inches)	81%	high
November Weather	4°C (40°F)	73 mm (2.9 inches)	89%	moderate
December Weather	1°C (34°F)	65 mm (2.6 inches)	86%	low