Barometric Pressure in Ann Arbor, United States 
1028.9 hPa
15.2 ℃
78%
5.1 m/s
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The average pressure in Ann Arbor, Michigan, United States today is , which is higher than normal. Pressure is trending falling.
Weather prediction: Very unsettled, finer at times
Rapid Pressure Changes
Rapid pressure changes detected in Ann Arbor, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Rise : ()
The daily total fluctuation in pressure in Ann Arbor is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Ann Arbor hour by hour across the next 6 hourly readings.
The barometric pressure in Ann Arbor is influenced by the mix of continental and lake air masses. It changes frequently due to the clash of these air masses. This clash causes pressure to fluctuate throughout the day. The pressure is often higher in the morning and lower in the afternoon.
Ann Arbor is surrounded by flat plains to the west and rolling hills to the east. The city is about 40 miles northwest of Lake Erie. The lake's proximity affects the local climate. The surrounding landscape allows cold air from Canada to move southward.
The landscape also enables warm air from the Gulf of Mexico to move northward. This clash of cold and warm air masses affects the atmospheric pressure. As a result, Ann Arbor's weather is characterized by frequent changes in pressure.