Today's barometric pressure in Carson City, 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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Carson City sits at 1,427 metres in the lee of the Sierra Nevada, where Pacific storms arrive stripped of most of their moisture but not their pressure signature. The baseline near 859 hPa reflects the elevation, and the Washoe Valley funnels wind through town.
Worst season for migraines: January, February and December. Midwinter brings the year's largest barometric changes as systems cross the Sierra crest. The rain shadow means these arrive as wind and pressure events more often than as precipitation, which catches people who track weather by looking outside.
Common triggers in Carson City: Sierra rain shadow frontal passages, afternoon Washoe Zephyr wind events, high desert humidity below 20 percent. Washoe Zephyr winds develop on the eastern Sierra slope through the warm months, producing a daily pressure and temperature pattern distinct from any storm system. Combined with high desert aridity and a 1,400 metre baseline, the eastern Sierra creates conditions that differ sharply from Reno's neighbouring but lower valley floor.
Typical pressure: Carson City averages 859 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 844 hPa. Swings of 5-8 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
2026 index: Carson City is not one of the 100 metros ranked in our 2026 U.S. Migraine Risk Index, which shows how they compare.
Can Carson City weather trigger migraines?
Yes. Carson City experiences 5-8 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include Sierra rain shadow frontal passages, afternoon Washoe Zephyr wind events, high desert humidity below 20 percent.
What time of year are migraines worst in Carson City?
In Carson City the most barometrically volatile stretch of the year falls in January, February and December. 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 Carson City?
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 Carson City 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 Carson City. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether Carson City's swings really line up with your attacks, and alerts you when conditions match your own trigger history.