Today's barometric pressure in Stockton, a 48-hour pressure chart, and a risk score for weather-triggered migraine and headache, based on pressure drops, humidity, and temperature changes.
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Stockton sits at the eastern edge of the Sacramento-San Joaquin Delta, where marine air pushes inland each evening and pools. Pressure averages 1015 hPa, but the valley's winter tule fog brings long stretches of stagnant high pressure that residents feel as their own kind of trigger.
Worst season for migraines: January through March. Pacific systems reach the valley through the delta gap during the wettest months. Between storms the basin settles into tule fog, a dense ground fog that can persist for a week under an unmoving inversion.
Common triggers in Stockton: prolonged tule fog inversions, evening delta breeze temperature drops, harvest season agricultural dust. Most summer evenings bring the delta breeze, which drops temperatures sharply after dark and produces a daily pressure cycle. In winter the same corridor delivers storm systems that have lost strength crossing the Coast Range but retain their barometric signature. Agricultural dust adds a separate irritant layer through harvest.
Typical pressure: Stockton averages 1015 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 1005 hPa. Swings of 4-8 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
2026 index: Stockton is not one of the 100 metros ranked in our 2026 U.S. Migraine Risk Index, which shows how they compare.
Can Stockton weather trigger migraines?
Yes. Stockton experiences 4-8 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include prolonged tule fog inversions, evening delta breeze temperature drops, harvest season agricultural dust.
What time of year are migraines worst in Stockton?
In Stockton the most barometrically volatile stretch of the year falls in January through March. That is when weather is most likely to play a part, if weather is a trigger for you at all. See when migraine weather season starts across the U.S.
Is there a barometric pressure headache forecast for Stockton?
This page works as one. Many people call a headache that arrives with a weather change a barometric pressure headache, and this forecast tracks the pressure drops, humidity and temperature swings behind that idea. The score covers the next 24 hours in Stockton and the chart shows the next 48. It is built on migraine research, so treat it as a rough guide for other headaches. A sudden, severe headache needs urgent medical care, whatever the weather.
Your own forecast
This page shows the weather risk for everyone in Stockton. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether Stockton's swings really line up with your attacks, and alerts you when conditions match your own trigger history.