Barometric Pressure in Eureka, United States 
1015 hPa
14.7 ℃
90%
2.75 m/s
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The average pressure in Eureka, California, United States today is , which is considered normal. Pressure is trending rising.
Weather prediction: Fairly fine, improving
The daily total fluctuation in pressure in Eureka is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Eureka hour by hour across the next 6 hourly readings.
The barometric pressure in Eureka fluctuates throughout the year. It changes depending on the movement of high and low-pressure systems. These systems bring different types of weather.
Eureka is surrounded by the Pacific Ocean to the west and the Klamath Mountains to the east. The ocean has a moderating effect on the city's climate. It keeps temperatures relatively mild. The mountains block cold air from the east. They also trap warm air from the west. This unique landscape affects the atmospheric pressure in Eureka. It creates a unique microclimate.