Barometric Pressure in Sumter, United States 
1017.5 hPa
26.8 ℃
62%
1.17 m/s
Get Alerts 🚨. Sign up to receive alerts when the barometric pressure changes significantly.
The average pressure in Sumter, South Carolina, United States today is , which is considered normal. Pressure is trending falling.
Weather prediction: Rain at times, worse later
The daily total fluctuation in pressure in Sumter is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Sumter hour by hour across the next 6 hourly readings.
Sumter, South Carolina has a humid subtropical climate. The city's flat geography allows winds to move easily, affecting air pressure. During the summer, hot air rises, causing low pressure and frequent thunderstorms. In the winter, cold air sinks, bringing high pressure and clearer skies. Throughout the year, Sumter's climate brings a mix of high and low air pressure, influencing the local weather.