Barometric Pressure
Barometric Pressure in Grimes, United States 
0000 hPa
00.0 ℃
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The pressure in Grimes, Iowa, United States is predicted to slowly drop over the next few hours, with an average pressure of 978.1 hPa today, which is lower than normal.
Weather prediction: Expect more wet and unsettled conditions
The daily total fluctuation in pressure in Grimes is 4.9 hPa, with a low of 975.2 hPa and a high of 980.1 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Grimes hour by hour and stay informed about how it will change over the next 6 hours.
Grimes, Iowa's air pressure changes because of its flat geography, which lets winds easily move in and out. In winter, cold Arctic air makes air pressure low, causing cold fronts. In summer, warm Gulf air makes air pressure high, causing hot and humid days. Grimes has a humid continental climate, with big air pressure swings between seasons.