April Weather in Delta, United States

Last updated: June 24, 2025

In Delta, United States, the average temperature in April is a comfortable 12°C (54°F). However, be prepared for a range of temperatures: it can dip as low as -6°C (22°F) and soar up to 30°C (87°F). Rainfall is moderate with an average precipitation of 24 mm (0.9 in) spread over 6 days. Additionally, the average humidity hovers around 67%, creating a pleasant atmosphere for your visit.

April Temperature in Delta

In April in Delta, the average temperature is 12°C (54°F). The maximum can reach 30°C (87°F), while the minimum can drop as low as -6°C (22°F). It's a time to prepare for a wide range of temperatures, so pack accordingly for your trip!

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

The chart illustrates April temperature patterns in Delta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Delta, April typically has an average temperature of 12°C (54°F), with highs reaching up to 30°C (87°F) and lows dropping to around -6°C (22°F).

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

April Precipitation in Delta

In Delta in April, the total precipitation amount is 24 mm (0.9 in) over a span of 6 days.

April Precipitation Trends in Delta

The chart displays monthly precipitation patterns in Delta, 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 Delta, April typically receives around 24 mm (0.9 inches) of precipitation spread over approximately 6 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Delta

In Delta in April, humidity is 67%. With an average temperature of 12°C (54°F), this humidity feels like a cool, damp blanket wrapping around you, making it essential to layer your clothing for comfort while exploring.

April Average Humidity in Delta

This chart illustrates the average monthly humidity levels in Delta, 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 Delta is approximately 67%, 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 Delta

In Delta 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 Delta.

Maximum UV Index Levels in Delta for April

The chart shows the monthly maximum UV Index (UVI) for Delta 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 Delta typically reaches 10, which falls under the very high exposure category.

Data source: Delta 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 Delta Compares to Other Months

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

This table compares monthly weather conditions in Delta, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	24 mm (0.9 inches)	82%	moderate
February Weather	3°C (37°F)	28 mm (1.1 inches)	84%	high
March Weather	8°C (46°F)	40 mm (1.6 inches)	76%	very high
April Weather	12°C (54°F)	24 mm (0.9 inches)	67%	very high
May Weather	17°C (63°F)	24 mm (1.0 inches)	51%	extreme
June Weather	25°C (77°F)	4 mm (0.2 inches)	44%	extreme
July Weather	29°C (85°F)	6 mm (0.2 inches)	36%	extreme
August Weather	28°C (82°F)	7 mm (0.3 inches)	32%	extreme
September Weather	22°C (72°F)	9 mm (0.4 inches)	43%	very high
October Weather	11°C (53°F)	26 mm (1.0 inches)	63%	high
November Weather	6°C (44°F)	19 mm (0.8 inches)	80%	moderate
December Weather	0°C (32°F)	26 mm (1.0 inches)	83%	moderate