Today's barometric pressure in Fargo, 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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Fargo's northern Great Plains location means exposure to some of the most extreme weather contrasts in North America. Arctic outbreaks can drop temperatures 50 degrees in a day, bringing equally dramatic pressure shifts that trigger migraines.
Worst season for migraines: September through June. Fargo experiences some of the most extreme temperature ranges and pressure swings of any US city, with winter temperatures dropping below minus 20 degrees and summer highs exceeding 100. Alberta Clippers and polar vortex events produce rapid, severe pressure drops across the flat Red River Valley.
Common triggers in Fargo: polar vortex extreme pressure drops, blizzard-force wind events across the open prairie, spring Red River Valley flooding and humidity surges. Fargo sits on the Red River of the North in one of the flattest major river valleys in North America. The prehistoric bed of glacial Lake Agassiz provides zero topographic resistance to weather systems, meaning the city takes the full, unmoderated impact of every frontal passage. The extreme continental climate produces an annual temperature range exceeding 130 degrees between winter lows and summer highs, creating dramatic seasonal pressure variation.
Typical pressure: Fargo averages 982 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 965 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: Fargo ranks #4 of 100 in our 2026 U.S. Migraine Risk Index, where #1 is the most challenging city for weather-driven migraine.
Can Fargo weather trigger migraines?
Yes. Fargo 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 polar vortex extreme pressure drops, blizzard-force wind events across the open prairie, spring Red River Valley flooding and humidity surges.
What time of year are migraines worst in Fargo?
In Fargo 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 Fargo?
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 Fargo 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 Fargo. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether Fargo's swings really line up with your attacks, and alerts you when conditions match your own trigger history.