April Weather in Rio Vista, United States

Last updated: June 24, 2025

In April, the average temperature in Rio Vista, United States hovers around 17°C (62°F), with fluctuations where the minimum dips to 4°C (40°F) and the maximum soars to 34°C (94°F). Expect about 33 mm (1.3 in) of precipitation spread over 4 days. With an average humidity of 81%, it’s wise to prepare for a warm and potentially wet experience!

April Temperature in Rio Vista

In April in Rio Vista, the average temperature is 17°C (62°F), with maximums reaching up to 34°C (94°F) and minimums dropping as low as 4°C (40°F). This climate makes it ideal for travelers seeking to enjoy mild days and cool evenings.

April Weather in Rio Vista: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Rio Vista, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Vista, April typically has an average temperature of 17°C (62°F), with highs reaching up to 34°C (94°F) and lows dropping to around 4°C (40°F).

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

April Precipitation in Rio Vista

In Rio Vista in April, the precipitation amount is 33 mm (1.3 in) over a span of 4 days.

April Precipitation Trends in Rio Vista

The chart displays monthly precipitation patterns in Rio Vista, 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 Rio Vista, April typically receives around 33 mm (1.3 inches) of precipitation spread over approximately 4 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 Rio Vista

In Rio Vista in April, humidity is 81%. With an average temperature of 17°C (62°F), this humidity feels like a warm blanket enveloping you, making outdoor adventures feel sticky and requiring frequent breaks to stay comfortable while exploring.

April Average Humidity in Rio Vista

This chart illustrates the average monthly humidity levels in Rio Vista, 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 Rio Vista is approximately 81%, 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 Rio Vista

In Rio Vista 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 Rio Vista.

Maximum UV Index Levels in Rio Vista for April

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

Data source: Rio Vista 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 Rio Vista Compares to Other Months

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

This table compares monthly weather conditions in Rio Vista, 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)	116 mm (4.6 inches)	84%	moderate
February Weather	12°C (53°F)	99 mm (3.9 inches)	84%	moderate
March Weather	13°C (56°F)	76 mm (3.0 inches)	83%	high
April Weather	17°C (62°F)	33 mm (1.3 inches)	81%	very high
May Weather	19°C (67°F)	16 mm (0.6 inches)	74%	very high
June Weather	23°C (73°F)	2 mm (0.1 inches)	64%	extreme
July Weather	23°C (74°F)	0 mm (0.0 inches)	44%	extreme
August Weather	23°C (73°F)	0 mm (0.0 inches)	36%	very high
September Weather	22°C (72°F)	1 mm (0.0 inches)	44%	very high
October Weather	19°C (66°F)	31 mm (1.2 inches)	65%	high
November Weather	13°C (56°F)	40 mm (1.6 inches)	84%	moderate
December Weather	10°C (50°F)	90 mm (3.5 inches)	83%	moderate