Today's barometric pressure in New Haven, 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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New Haven sits on Long Island Sound, partially sheltered by the island itself from open Atlantic swell and wind. Pressure averages 1014 hPa, but swings still reach 15 hPa because coastal storms track directly overhead regardless of that shelter.
Worst season for migraines: February, December and January. Winter coastal systems bring the year's steepest changes. The Sound moderates temperature enough that these often arrive as rain or mixed precipitation rather than snow, which does nothing to reduce the barometric component.
Common triggers in New Haven: coastal systems tracking over the Sound, summer sea breeze convergence, Quinnipiac valley cold air drainage. Long Island acts as a breakwater, so New Haven's marine influence is gentler than an open-ocean city at the same latitude. What the Sound does provide is a persistent moisture source and a sea breeze that develops most summer afternoons. The city also sits at the mouth of the Quinnipiac valley, which channels cold air down from the interior.
Typical pressure: New Haven averages 1014 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 994 hPa. Swings of 7-15 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
2026 index: New Haven is not one of the 100 metros ranked in our 2026 U.S. Migraine Risk Index, which shows how they compare.
Can New Haven weather trigger migraines?
Yes. New Haven experiences 7-15 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include coastal systems tracking over the Sound, summer sea breeze convergence, Quinnipiac valley cold air drainage.
What time of year are migraines worst in New Haven?
In New Haven the most barometrically volatile stretch of the year falls in February, December and January. 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 New Haven?
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 New Haven 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 New Haven. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether New Haven's swings really line up with your attacks, and alerts you when conditions match your own trigger history.