Barometric Pressure in Tomah, United States 
1011.8 hPa
21.5 ℃
35%
7.22 m/s
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The average pressure in Tomah, Wisconsin, United States today is , which is considered normal. Pressure is trending rising.
Weather prediction: Fine, possible showers
The daily total fluctuation in pressure in Tomah is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Tomah hour by hour across the next 6 hourly readings.
Tomah, Wisconsin has changing air pressure due to weather patterns, geography, and seasons. Weather patterns bring high or low air pressure, affecting the weather.
When a high-pressure system moves in, the air sinks, making the air pressure rise, bringing good weather like clear skies and light winds.
Tomah's geography, near the Mississippi River and surrounded by hills, can trap or channel air, changing air pressure and weather.
In winter, cold Arctic air brings low pressure, making the air rise and resulting in cloudy and snowy weather.
In summer, warm air from the Gulf of Mexico brings high pressure, making the air sink and resulting in warm and sunny weather.
Tomah has a humid continental climate, with big temperature differences between seasons, which affects air pressure and weather patterns.