Barometric Pressure in Yelm, United States 
1018.4 hPa
9.5 ℃
85%
1.2 m/s
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The average pressure in Yelm, Washington, United States today is , which is considered normal. Pressure is trending falling.
Weather prediction: Rain at times, very unsettled
Rapid Pressure Changes
Rapid pressure changes detected in Yelm, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Fall : ()
The daily total fluctuation in pressure in Yelm is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Yelm hour by hour across the next 6 hourly readings.
The weather in Yelm affects barometric pressure by causing it to rise and fall with changes in temperature and humidity. These changes can signal approaching storms or fair weather.
Yelm's 400-foot elevation and surrounding hills influence atmospheric pressure by creating channels for air to move through, leading to more variable pressure. The landscape also traps or redirects air masses.
In winter, pressure tends to be lower, bringing rain and storms. In summer, pressure is higher, bringing dry and sunny weather. Spring and fall bring moderate pressure and mild weather.
Yelm has a Mediterranean climate, which means it experiences large pressure fluctuations between seasons. This leads to noticeable changes in weather and a varied climate.