Today's barometric pressure in Spokane, 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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Spokane's inland Northwest location brings cold, dry winters and hot summers with dramatic seasonal pressure shifts. Pacific systems lose moisture crossing the Cascades but maintain their pressure influence, creating dry frontal passages that migraine sufferers feel.
Worst season for migraines: October through April. Pacific storms that cross the Cascades lose much of their moisture but retain their pressure signatures, delivering rapid frontal passages to the Spokane area. Winter Arctic outbreaks from British Columbia can drop temperatures 40+ degrees while dramatically shifting barometric readings.
Common triggers in Spokane: post-Cascade Pacific frontal passages, Arctic outbreaks from British Columbia, Palouse wind events stirring agricultural dust. Spokane sits at 1,920 feet on the Spokane River in the channeled scablands of eastern Washington. The rain shadow of the Cascades means significantly less precipitation than western Washington, but weather fronts still bring sharp pressure changes even when precipitation is light. The surrounding Palouse agricultural region generates dust during wind events, and winter inversions in the Spokane Valley can trap wood smoke and create poor air quality.
Typical pressure: Spokane averages 960 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 946 hPa. Swings of 6-12 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
2026 index: Spokane ranks #34 of 100 in our 2026 U.S. Migraine Risk Index, where #1 is the most challenging city for weather-driven migraine.
Can Spokane weather trigger migraines?
Yes. Spokane experiences 6-12 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include post-Cascade Pacific frontal passages, Arctic outbreaks from British Columbia, Palouse wind events stirring agricultural dust.
What time of year are migraines worst in Spokane?
In Spokane the most barometrically volatile stretch of the year falls in October through April. 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 Spokane?
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 Spokane 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 Spokane. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether Spokane's swings really line up with your attacks, and alerts you when conditions match your own trigger history.