Today's barometric pressure in Sioux Falls, 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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Sioux Falls sits on the northern Great Plains where Arctic air masses battle Gulf moisture. The city routinely experiences some of the largest pressure swings in the country, particularly when powerful low-pressure systems develop along the jet stream.
Worst season for migraines: October through April. Sioux Falls experiences dramatic continental pressure swings as Arctic, Pacific, and Gulf air masses battle across the open Great Plains. Winter blizzards and spring severe weather both produce extreme pressure drops, and the Big Sioux River valley provides minimal shelter from incoming systems.
Common triggers in Sioux Falls: Arctic cold front pressure drops across open prairie, spring severe thunderstorm and tornado pressure events, extreme winter cold with wind chill below minus 30 degrees. Sioux Falls sits at 1,430 feet along the Big Sioux River on the eastern South Dakota prairie, near the geographic center of the continent. The flat terrain extends unbroken for hundreds of miles in every direction, fully exposing the city to every air mass that crosses the Plains. The falls of the Big Sioux River that give the city its name mark a minor Sioux Quartzite ridge, but this provides no meaningful weather shelter. The extreme continental climate produces one of the widest annual temperature ranges of any US city.
Typical pressure: Sioux Falls averages 963 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 947 hPa. Swings of 8-16 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
2026 index: Sioux Falls ranks #26 of 100 in our 2026 U.S. Migraine Risk Index, where #1 is the most challenging city for weather-driven migraine.
Can Sioux Falls weather trigger migraines?
Yes. Sioux Falls experiences 8-16 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include Arctic cold front pressure drops across open prairie, spring severe thunderstorm and tornado pressure events, extreme winter cold with wind chill below minus 30 degrees.
What time of year are migraines worst in Sioux Falls?
In Sioux Falls 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 Sioux Falls?
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 Sioux Falls 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 Sioux Falls. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether Sioux Falls's swings really line up with your attacks, and alerts you when conditions match your own trigger history.