April Weather in Mattawa, United States

Last updated: June 24, 2025

In Mattawa, United States, the average temperature in April hovers around 11°C (52°F). During this time, temperatures can dip as low as -2°C (28°F) and soar up to 31°C (87°F). Expect about 26 mm (1.0 in) of precipitation over 6 days, contributing to an average humidity of 84%. Stay prepared for a mix of conditions!

April Temperature in Mattawa

In April in Mattawa, the average temperature is 11°C (52°F). Maximum temperatures can reach 31°C (87°F), while minimums can drop as low as -2°C (28°F). Travelers should be prepared for a wide range of temperatures during this time.

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

The chart illustrates April temperature patterns in Mattawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mattawa, April typically has an average temperature of 11°C (52°F), with highs reaching up to 31°C (87°F) and lows dropping to around -2°C (28°F).

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

April Precipitation in Mattawa

In Mattawa in April, the precipitation amount is 26 mm (1.0 in) over the course of 6 days.

April Precipitation Trends in Mattawa

The chart displays monthly precipitation patterns in Mattawa, 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 Mattawa, April typically receives around 26 mm (1.0 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 Mattawa

In Mattawa in April, humidity is 84%. With an average temperature of 11°C (52°F), this humidity feels like a heavy blanket, making it uncomfortable for traveling as the dampness clings to your skin and can leave you feeling sluggish and fatigued.

April Average Humidity in Mattawa

This chart illustrates the average monthly humidity levels in Mattawa, 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 Mattawa is approximately 84%, 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 Mattawa

In Mattawa in April, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Mattawa, you can refer to this Hourly UV Index in Mattawa.

Maximum UV Index Levels in Mattawa for April

The chart shows the monthly maximum UV Index (UVI) for Mattawa 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 Mattawa typically reaches 6, which falls under the high exposure category.

Data source: Mattawa 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 Mattawa Compares to Other Months

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

This table compares monthly weather conditions in Mattawa, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (31°F)	45 mm (1.8 inches)	86%	low
February Weather	0°C (33°F)	43 mm (1.7 inches)	86%	moderate
March Weather	6°C (43°F)	27 mm (1.1 inches)	87%	moderate
April Weather	11°C (52°F)	26 mm (1.0 inches)	84%	high
May Weather	17°C (63°F)	17 mm (0.7 inches)	81%	very high
June Weather	21°C (70°F)	7 mm (0.3 inches)	82%	very high
July Weather	25°C (77°F)	1 mm (0.0 inches)	79%	very high
August Weather	25°C (77°F)	5 mm (0.2 inches)	63%	very high
September Weather	19°C (66°F)	14 mm (0.5 inches)	62%	high
October Weather	11°C (51°F)	33 mm (1.3 inches)	83%	moderate
November Weather	4°C (40°F)	35 mm (1.4 inches)	89%	moderate
December Weather	0°C (33°F)	38 mm (1.5 inches)	88%	low