April Weather in Casco, United States

Last updated: June 24, 2025

In April, the average temperature in Casco, United States hovers around 6°C (43°F). Expect a range that can dip to a chilly -4°C (24°F) and rise to a warm 27°C (82°F). During this month, anticipate about 112 mm (4.4 in) of precipitation over 12 days, contributing to an average humidity of 80%. Embrace the variety in weather as you explore this unique locale!

April Temperature in Casco

In April in Casco, the average temperature is 6°C (43°F). Maximums can reach 27°C (82°F), and minimums can be as low as -4°C (24°F). It's a great time for travelers to experience diverse weather conditions, so be sure to pack layers to accommodate both warm and chilly moments.

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

The chart illustrates April temperature patterns in Casco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Casco, April typically has an average temperature of 6°C (43°F), with highs reaching up to 27°C (82°F) and lows dropping to around -4°C (24°F).

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

April Precipitation in Casco

In Casco in April, the total precipitation amount is 112 mm (4.4 in), falling over the course of 12 days.

April Precipitation Trends in Casco

The chart displays monthly precipitation patterns in Casco, 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 Casco, April typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 12 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 Casco

In Casco in April humidity is 80%. With an average temperature of 6°C (43°F), this humidity feels like a chilly, damp embrace that can make outdoor exploration quite uncomfortable, often leaving travelers feeling clammy and cold despite the relatively mild temperature.

April Average Humidity in Casco

This chart illustrates the average monthly humidity levels in Casco, 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 Casco is approximately 80%, 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 Casco

In Casco 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 Casco.

Maximum UV Index Levels in Casco for April

The chart shows the monthly maximum UV Index (UVI) for Casco 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 Casco typically reaches 8, which falls under the very high exposure category.

Data source: Casco 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 Casco Compares to Other Months

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

This table compares monthly weather conditions in Casco, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	79 mm (3.1 inches)	86%	low
February Weather	-4°C (25°F)	85 mm (3.3 inches)	84%	moderate
March Weather	0°C (32°F)	72 mm (2.9 inches)	82%	moderate
April Weather	6°C (43°F)	112 mm (4.4 inches)	80%	very high
May Weather	12°C (54°F)	74 mm (2.9 inches)	72%	very high
June Weather	19°C (66°F)	73 mm (2.9 inches)	72%	very high
July Weather	22°C (72°F)	139 mm (5.5 inches)	67%	very high
August Weather	21°C (71°F)	79 mm (3.1 inches)	66%	very high
September Weather	17°C (64°F)	62 mm (2.4 inches)	71%	high
October Weather	11°C (52°F)	117 mm (4.6 inches)	78%	moderate
November Weather	4°C (39°F)	102 mm (4.0 inches)	84%	moderate
December Weather	-2°C (28°F)	110 mm (4.3 inches)	81%	low