A cold front moved through North Texas Thursday morning, so it's no surprise that it will be cooler.
But a cold front does more to our weather than just drop temperatures.
Before a front passes the weather conditions look like this:
Winds - South or Southwest
Temperature - Warm
Pressure - Falling steadily
Clouds - Increasing
Precipitation - Showers, storms. Especially along the leading edge of the front
Dew Point - High
Wind - North or Northwest
Temperature - Dropping
Pressure - Rising steadily
Clouds - Fair weather cumulus or clearing
Precipitation - Showers, clearing
Dew Point - Lowering
Every weather event is different, but this is a good generalization of what a cold front does.