Influences on Weather. What is weather?. Weather is the state of the atmosphere at a certain time and place. The state of the atmosphere includes: the amount of water in the air, the temperature of the air and precipitation. These aspects of weather have an effect on air pressure and winds. .
We measure humidity with a hygrometer.
Answer-Air in low-pressure areas rises as its temperature increases. As the air rises, the heavier dense air in a high-pressure area has room to move into the space created by the rising, low-pressure air.
LOW-Warm temps, storms, and rain
HIGH-Cooler temps and clear skies
1. When high-pressure areas are near the low-pressure areas.
2. When there is a LARGE difference in temperature between the high- and low-pressure areas