April Weather in Bellingham, United States

Last updated: June 24, 2025

In April, the average temperature in Bellingham, United States hovers around 9°C (48°F). Expect a minimum of 2°C (35°F) and a comfortable maximum of 21°C (69°F). With 127 mm (5.0 in) of precipitation spread across approximately 15 days, humidity levels remain notably high at 86%.

April Temperature in Bellingham

In April in Bellingham, the average temperature is 9°C (48°F). Maximums can reach 21°C (69°F), while minimums can be as low as 2°C (35°F). Be sure to pack layers to comfortably enjoy your travels in Bellingham during this time.

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

The chart illustrates April temperature patterns in Bellingham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bellingham, April typically has an average temperature of 9°C (48°F), with highs reaching up to 21°C (69°F) and lows dropping to around 2°C (35°F).

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

April Precipitation in Bellingham

In Bellingham in April, the total precipitation amount is 127 mm (5.0 in) distributed over 15 days.

April Precipitation Trends in Bellingham

The chart displays monthly precipitation patterns in Bellingham, 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 Bellingham, April typically receives around 127 mm (5.0 inches) of precipitation spread over approximately 15 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 Bellingham

In Bellingham in April, humidity is 86%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that wraps around you, making outdoor activities uncomfortable and travel less enjoyable.

April Average Humidity in Bellingham

This chart illustrates the average monthly humidity levels in Bellingham, 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 Bellingham is approximately 86%, 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 Bellingham

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

Maximum UV Index Levels in Bellingham for April

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

Data source: Bellingham 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 Bellingham Compares to Other Months

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

This table compares monthly weather conditions in Bellingham, 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 (41°F)	199 mm (7.8 inches)	86%	low
February Weather	4°C (39°F)	185 mm (7.3 inches)	85%	moderate
March Weather	6°C (44°F)	156 mm (6.2 inches)	86%	moderate
April Weather	9°C (48°F)	127 mm (5.0 inches)	86%	high
May Weather	12°C (53°F)	76 mm (3.0 inches)	81%	very high
June Weather	15°C (59°F)	58 mm (2.3 inches)	83%	very high
July Weather	17°C (63°F)	27 mm (1.1 inches)	84%	very high
August Weather	18°C (64°F)	19 mm (0.8 inches)	77%	very high
September Weather	15°C (60°F)	125 mm (4.9 inches)	76%	high
October Weather	11°C (51°F)	186 mm (7.3 inches)	88%	moderate
November Weather	8°C (46°F)	261 mm (10.3 inches)	87%	low
December Weather	5°C (41°F)	227 mm (8.9 inches)	87%	low