April Weather in Alto, United States

Last updated: June 24, 2025

In April, the average temperature in Alto, United States hovers around 19°C (66°F), creating a comfortable atmosphere. Expect minimums dipping to 1°C (34°F) and maximums soaring to 32°C (90°F). With 142 mm (5.6 in) of precipitation spread over 11 days, it's a month to embrace occasional showers. The average humidity sits at a moist 79%, adding to the unique climate experience of the region.

April Temperature in Alto

In April in Alto, the average temperature is 19°C (66°F). Maximums can reach 32°C (90°F) and minimums can be as low as 1°C (34°F). This variation means that travelers should pack a range of clothing to accommodate both warm days and cooler nights.

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

The chart illustrates April temperature patterns in Alto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alto, April typically has an average temperature of 19°C (66°F), with highs reaching up to 32°C (90°F) and lows dropping to around 1°C (34°F).

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

April Precipitation in Alto

In Alto in April, the precipitation amount is 142 mm (5.6 in) over the course of 11 days.

April Precipitation Trends in Alto

The chart displays monthly precipitation patterns in Alto, 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 Alto, April typically receives around 142 mm (5.6 inches) of precipitation spread over approximately 11 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 Alto

In Alto in April humidity is 79%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace, making it feel much warmer than the actual temperature and creating a heavy, sticky atmosphere that can be a bit uncomfortable for traveling.

April Average Humidity in Alto

This chart illustrates the average monthly humidity levels in Alto, 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 Alto is approximately 79%, 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 Alto

In Alto in April, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Alto.

Maximum UV Index Levels in Alto for April

The chart shows the monthly maximum UV Index (UVI) for Alto 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 Alto typically reaches 11, which falls under the extreme exposure category.

Data source: Alto 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 Alto Compares to Other Months

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

This table compares monthly weather conditions in Alto, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	101 mm (4.0 inches)	79%	moderate
February Weather	11°C (53°F)	135 mm (5.3 inches)	80%	high
March Weather	16°C (62°F)	115 mm (4.5 inches)	78%	very high
April Weather	19°C (66°F)	142 mm (5.6 inches)	79%	extreme
May Weather	24°C (75°F)	145 mm (5.7 inches)	81%	extreme
June Weather	27°C (81°F)	111 mm (4.4 inches)	77%	extreme
July Weather	29°C (84°F)	80 mm (3.2 inches)	71%	extreme
August Weather	29°C (85°F)	102 mm (4.0 inches)	67%	extreme
September Weather	26°C (80°F)	97 mm (3.8 inches)	69%	very high
October Weather	21°C (70°F)	121 mm (4.8 inches)	73%	very high
November Weather	14°C (58°F)	76 mm (3.0 inches)	82%	high
December Weather	12°C (54°F)	116 mm (4.6 inches)	87%	moderate