Barometric Pressure Forecast for West Sacramento, California
Barometric pressure forecast for West Sacramento, California — on the Yolo bank of the Sacramento River at the head of the Delta. See current barometric pressure and what it means for weather-sensitive people.
Download Pressure Pal to track barometric pressure and get migraine alerts for West Sacramento and your area.
Pressure and weather in West Sacramento
West Sacramento lies on the Yolo County side of the Sacramento River, barely twenty feet above sea level, ringed by the levees and bypass channels that carry the valley's winter floodwater. Its weather is governed by two things that have nothing to do with passing storms. The first is the Delta breeze, the marine air that funnels inland through the Carquinez Strait most summer evenings and drops the temperature twenty degrees after dark, a daily oscillation far more noticeable than anything the barometer does between May and September. The second is tule fog, the dense radiation fog that settles into the valley floor for days at a time in December and January under exactly the stagnant high-pressure conditions that flatten the pressure trace. Real pressure movement is confined to the winter months, when atmospheric rivers aimed at northern California drive a sequence of Pacific lows across the valley in bursts of a week or two.
What this means for you
Because the pressure line goes nearly flat for half the year, a winter atmospheric river sequence stands out clearly against the background here. That makes West Sacramento a good place to test whether it is the pressure change or the temperature swing you actually react to — log both in the migraine tracker app and compare.