humid air, hot or cold temp., precipitation such as sleet, snow , hail, rain
cyclonic and windy
The low pressure system will bring warm and rainy weather to Chicago.
low pressure
Stormy weather often occurs along the boundary between air masses or in association with a low pressure system.
In a high pressure area, good warm weather will occur. In a low pressure area, colder rainy weather will occur.
cyclonic and windy
Depending on the air pressure the weather system can be hot of cold
The low pressure system will bring warm and rainy weather to Chicago.
High Pressure, in this case we are talking about a High Pressure System. A High Pressure System doesn't allow clouds to form, which means you can get great weather from this type of system.
low pressure
That's pretty high - high pressure brings clear skies and calm winds.
A Low Pressure System is the kind of system that allows clouds to form. When clouds form, you can get a cloudy day, with most low pressure systems, the clouds bring the rain.
Strong winds and precipitation.
A low pressure system allows clouds to form. It this case you can get a cloudy day, you can also get rain too.
Isobars on a weather map indicate areas of constant pressure. They circle areas of high or low pressure. Isobars themselves do not indicate weather, but are a tool for understanding large scale weather processes as related to pressure systems. However, if the isobars are close together, wind is expected.
Stormy weather often occurs along the boundary between air masses or in association with a low pressure system.
It will be mostly having bad weather a storm like a tornado or a hurricane and sometimes rain, snow, sleet, or hail.