Barometric Pressure
Barometric Pressure in Grimes, United States 
1021.2 hPa
22.5 ℃
46%
3.08 m/s
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The average pressure in Grimes, Iowa, United States today is , which is considered normal. Pressure is trending rising.
Weather prediction: Fairly fine, improving
Rapid Pressure Changes
Rapid pressure changes detected in Grimes, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Fall : ()
- Rapid Rise : ()
The daily total fluctuation in pressure in Grimes is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Grimes hour by hour across the next 6 hourly readings.
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.