Today's barometric pressure in Duluth, 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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Duluth's position at the western tip of Lake Superior creates one of the most dramatically weather-affected environments in the US. The lake generates its own pressure systems, and the city's northern latitude means long, intense storm seasons.
Worst season for migraines: September through June. Duluth's western Lake Superior shoreline exposes it to powerful fall and winter storms that develop over the lake. The Lake Superior basin generates its own intense low-pressure systems, sometimes rivaling coastal nor'easters in pressure drops. Spring ice breakup creates additional atmospheric instability.
Common triggers in Duluth: Lake Superior gale-force storm pressure drops, extreme cold creating vascular constriction, persistent winter cloud cover from lake-effect moisture. Duluth cascades from 800-foot bluffs down to the Lake Superior waterfront, creating dramatic elevation differences within city limits. The lake's massive cold-water surface moderates coastal temperatures but generates intense storms, especially in November when temperature differentials between the water and Arctic air are greatest. The city's position at the western tip of the lake means it catches weather from the full fetch of this inland sea, the largest freshwater lake by surface area in the world.
Typical pressure: Duluth averages 990 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 972 hPa. Swings of 8-18 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
2026 index: Duluth ranks #6 of 100 in our 2026 U.S. Migraine Risk Index, where #1 is the most challenging city for weather-driven migraine.
Can Duluth weather trigger migraines?
Yes. Duluth experiences 8-18 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include Lake Superior gale-force storm pressure drops, extreme cold creating vascular constriction, persistent winter cloud cover from lake-effect moisture.
What time of year are migraines worst in Duluth?
In Duluth the most barometrically volatile stretch of the year falls in September through June. 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 Duluth?
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 Duluth 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 Duluth. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether Duluth's swings really line up with your attacks, and alerts you when conditions match your own trigger history.