Last updated: June 24, 2025
In April, the average temperature in Eureka, United States hovers around 10°C (50°F). Expect a range with minimums dipping to -6°C (21°F) and soaring up to 28°C (83°F). During this month, anticipate 47 mm (1.8 in) of precipitation across 9 days, contributing to an average humidity of 69%. Enjoy the unique contrasts that Eureka offers this season!
In April in Eureka, the average temperature is 10°C (50°F). Maximum temperatures can reach 28°C (83°F), while minimums can drop as low as -6°C (21°F). Pack accordingly to enjoy a range of weather conditions during your travels.
In Eureka in April, the total precipitation amount is 47 mm (1.8 in), which falls over the course of 9 days.
In Eureka in April, humidity is 69%. With an average temperature of 10°C (50°F), this humidity feels like a cool mist that clings to your skin, making outdoor activities invigorating yet slightly damp, so travelers should dress in layers to adjust to the refreshing air.
In Eureka in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Eureka.
UV Risk Categories
Weather in Eureka varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Eureka, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -4°C (25°F) | 44 mm (1.8 inches) | 87% | moderate |
February Weather | -1°C (30°F) | 48 mm (1.9 inches) | 88% | high |
March Weather | 4°C (39°F) | 60 mm (2.4 inches) | 77% | high |
April Weather | 10°C (50°F) | 47 mm (1.8 inches) | 69% | very high |
May Weather | 15°C (60°F) | 42 mm (1.6 inches) | 54% | extreme |
June Weather | 23°C (74°F) | 10 mm (0.4 inches) | 45% | extreme |
July Weather | 28°C (82°F) | 9 mm (0.3 inches) | 37% | extreme |
August Weather | 26°C (79°F) | 20 mm (0.8 inches) | 34% | extreme |
September Weather | 21°C (69°F) | 21 mm (0.8 inches) | 47% | very high |
October Weather | 10°C (51°F) | 35 mm (1.4 inches) | 67% | high |
November Weather | 5°C (41°F) | 27 mm (1.1 inches) | 82% | moderate |
December Weather | -3°C (28°F) | 42 mm (1.6 inches) | 87% | moderate |