April Weather in Cathlamet, United States

Last updated: June 24, 2025

In April, the average temperature in Cathlamet, United States hovers around 10°C (50°F), with a potential minimum of 1°C (34°F) and a pleasant maximum of 25°C (77°F). Expect 134 mm (5.3 in) of precipitation spread across 15 days, while maintaining a high average humidity of 83%. Whether you're packing a raincoat or a light sweater, be prepared for the variability of this lively month!

April Temperature in Cathlamet

In April in Cathlamet, the average temperature is 10°C (50°F). Maximum temperatures can reach 25°C (77°F), while minimums can drop to as low as 1°C (34°F). This variation makes it a great time to experience the beauty of Cathlamet, so pack accordingly for both warm days and cool evenings.

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

The chart illustrates April temperature patterns in Cathlamet, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cathlamet, April typically has an average temperature of 10°C (50°F), with highs reaching up to 25°C (77°F) and lows dropping to around 1°C (34°F).

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

April Precipitation in Cathlamet

In Cathlamet in April, the total precipitation amount is 134 mm (5.3 in) spread over a period of 15 days.

April Precipitation Trends in Cathlamet

The chart displays monthly precipitation patterns in Cathlamet, 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 Cathlamet, April typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 15 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 Cathlamet

In Cathlamet in April, humidity is 83%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that clings to your skin, making outdoor exploration less comfortable and prompting visitors to seek cozy indoor activities.

April Average Humidity in Cathlamet

This chart illustrates the average monthly humidity levels in Cathlamet, 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 Cathlamet is approximately 83%, 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 Cathlamet

In Cathlamet 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 Cathlamet, you can refer to this Hourly UV Index in Cathlamet.

Maximum UV Index Levels in Cathlamet for April

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

Data source: Cathlamet 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 Cathlamet Compares to Other Months

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

This table compares monthly weather conditions in Cathlamet, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (42°F)	214 mm (8.4 inches)	86%	low
February Weather	5°C (41°F)	192 mm (7.5 inches)	84%	moderate
March Weather	7°C (45°F)	149 mm (5.9 inches)	85%	moderate
April Weather	10°C (50°F)	134 mm (5.3 inches)	83%	high
May Weather	12°C (55°F)	74 mm (2.9 inches)	84%	very high
June Weather	15°C (59°F)	62 mm (2.5 inches)	84%	very high
July Weather	16°C (62°F)	11 mm (0.4 inches)	82%	very high
August Weather	17°C (63°F)	12 mm (0.5 inches)	73%	very high
September Weather	16°C (60°F)	91 mm (3.6 inches)	74%	high
October Weather	11°C (52°F)	151 mm (5.9 inches)	83%	moderate
November Weather	8°C (46°F)	212 mm (8.3 inches)	86%	moderate
December Weather	5°C (41°F)	229 mm (9.0 inches)	87%	low