Barometric Pressure in Siena, Italy 
1026.4 hPa
14.3 ℃
97%
0.41 m/s
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The average pressure in Siena, Tuscany, Italy today is , which is higher than normal. Pressure is trending falling.
Weather prediction: Rain at times, worse later
Rapid Pressure Changes
Rapid pressure changes detected in Siena, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Rise : ()
The daily total fluctuation in pressure in Siena is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Siena hour by hour across the next 6 hourly readings.
Weather patterns in Siena cause changes in barometric pressure, which can rise or fall depending on the type of weather. High pressure often brings clear skies, while low pressure brings clouds and rain.
Siena's elevation, 321 meters above sea level, and surrounding hills affect atmospheric pressure, making it more variable. The city's valley location can trap air, causing pressure to change.
In winter, pressure is usually low, bringing rain and cool temperatures. In summer, pressure is high, bringing hot, sunny weather. Spring and autumn have more variable pressure, with a mix of weather conditions.
Siena has a Mediterranean climate, with warm summers and cool winters. This climate type causes barometric pressure to fluctuate, resulting in changing weather patterns that can be unpredictable and exciting.