Meteorological spring vs. astronomical spring: What’s the difference?

ABILENE, Texas (KTAB/KRBC) – As we start seeing warmer days and blooming flowers, you often hear people discussing the start of spring; however, did you know there are two different ways to define the season?

Let’s break down the difference between meteorological spring and astronomical spring.

Meteorological spring starts on March 1 and ends on May 31. Meteorologists divide the year into four three-month seasons to facilitate the comparison of seasonal data, including average temperatures, rainfall, and severe weather patterns.

Astronomical spring, on the other hand, is based on the Earth’s position in relation to the sun. It begins on the spring equinox, which usually falls around March 19-21, when day and night are found nearly equal. This season, however, lasts until the summer solstice in June.

Both versions signal the arrival of warmer weather, but for us meteorologists, meteorological spring gives us a more precise and consistent way to track seasonal trends. So, whether you are watching the calendar or the flowers blooming, spring is right around the corner!