I looked at the data for Chattanooga. If we lived closer to a large body of water, like the Atlantic or Pacific, our temperatures would be more modified. However, we don't. This results in big temperature swings, bringing it tough sometimes to plan your day. September brings an average high of 88 on the 1st, only to drop to 78 at the end of the month. The month of October, brings a 10-degree temperature drop too. Similar to fall, March brings a 10-degree temperature jump and April brings a 7-degree temperature jump. The average high jumps from 69 on April 1st to 76 by the 30th. 

This is all from the sun's angle and the shift in the jet stream as it's in the transition period. This is also the reason why spring and fall are our breezy months! You can think of the jet stream as a ribbon of air with high winds aloft in the atmosphere. That jet stream is what separates two air masses: cold, and warm. That jet stream, just like a river, veers and curves. It's during that fluctuation that brings us our weather. During the summer months, the jet stream is lifted north. This means the warmer air in the tropics, is allowed to inch into more northern latitudes. During the winter months, the jet is shifted south-which means the air that's usually trapped in northern latitudes, is sinking southward to the Tennessee Valley.

Since the winter solstice, the jet has been inching, lifting into a slightly northern latitude each day.  This will continue until the summer solstice, which this year is June 21st. After the summer solstice, the jet stream begins its descend, tracking into southern latitudes, allowing cooler air to descend into our region.

Have a weather-related story idea? Feel free to email Meteorologist Brittany Beggs.