Barometric Pressure in Johnstown, United States 
1017.4 hPa
8.5 ℃
80%
6.24 m/s
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The average pressure in Johnstown, New York, 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 Johnstown, 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 Johnstown is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Johnstown hour by hour across the next 6 hourly readings.
Johnstown's weather is affected by its location in a valley, which traps cold air and makes winters colder. This valley shape also blocks warm air from the south, making summers cooler.
The surrounding mountains create a rain shadow effect, making Johnstown drier than areas east of the mountains. This leads to lower air pressure, causing more clouds and precipitation.
In winter, cold air from Canada brings low pressure, resulting in snow and freezing temperatures. In summer, warm air from the Gulf of Mexico brings high pressure, leading to warm and sunny days.
Johnstown has a continental climate, which means big temperature differences between summer and winter. This leads to large changes in air pressure, causing varying weather patterns throughout the year.