Today's barometric pressure in Rochester, 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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Rochester's Lake Ontario location delivers persistent cloud cover and lake-effect precipitation. The city's weather can shift rapidly as systems move across the Great Lakes, and the transition months of March-April and October-November bring the most unpredictable pressure patterns.
Worst season for migraines: October through April. Rochester's southern Lake Ontario shoreline exposes it to lake-effect weather events throughout the cold season. The city experiences persistent winter cloud cover rivaling Buffalo's, with pressure oscillations driven by alternating Arctic high-pressure systems and Great Lakes lows.
Common triggers in Rochester: Lake Ontario lake-effect squalls and associated pressure changes, persistent winter overcast exceeding 70% of days, nor'easter remnants tracking through the Mohawk Valley. Rochester sits on the southern shore of Lake Ontario at the mouth of the Genesee River, in a terrain that slopes gradually from the lake toward the Finger Lakes to the south. The lake's moderating influence keeps fall temperatures warmer but extends the lake-effect season well into January before ice coverage reduces moisture flux. The Genesee River gorge through the city center creates a minor wind and moisture corridor.
Typical pressure: Rochester averages 997 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 978 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: Rochester ranks #30 of 100 in our 2026 U.S. Migraine Risk Index, where #1 is the most challenging city for weather-driven migraine.
Can Rochester weather trigger migraines?
Yes. Rochester 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 Ontario lake-effect squalls and associated pressure changes, persistent winter overcast exceeding 70% of days, nor'easter remnants tracking through the Mohawk Valley.
What time of year are migraines worst in Rochester?
In Rochester 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 Rochester?
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 Rochester 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 Rochester. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether Rochester's swings really line up with your attacks, and alerts you when conditions match your own trigger history.