Barometric Pressure in Rocklin, United States 
1011.5 hPa
18.7 ℃
36%
3.11 m/s
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The average pressure in Rocklin, California, United States today is , which is considered normal. Pressure is trending steady.
Weather prediction: Fairly fine, showers likely
The daily total fluctuation in pressure in Rocklin is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Rocklin hour by hour across the next 6 hourly readings.
The weather in Rocklin has high pressure systems during fair weather and low pressure systems during storms, which cause changes in the barometric pressure. Pressure drops before a storm and rises after it passes.
Rocklin's elevation of 500 feet above sea level and surrounding Sierra Nevada mountains affect atmospheric pressure, causing it to be lower than at sea level. The landscape also blocks some air masses from the coast.
In winter, high pressure dominates, bringing dry and cold air, while in summer, low pressure leads to warm and dry conditions. Spring and fall have more variable pressure, causing mixed weather.
Rocklin has a Mediterranean climate, which means it has dry summers and wet winters, causing large fluctuations in barometric pressure that affect the local weather patterns and what people experience.