In 2026 in the Northern Hemisphere, spring officially begins on Friday, March 20 (the spring/vernal equinox).

Two common “first days” of spring

  • Astronomical spring: Starts at the spring equinox , when day and night are nearly equal in length.
    • In 2026 this falls on Friday, March 20 (around mid‑morning in North American time zones).
  • Meteorological spring: Defined by calendar months and temperature records.
    • In the Northern Hemisphere this runs March 1 to May 31 every year, so some people treat March 1 as the “start of spring.”

Quick example

  • If you’re in the US or UK and asking “what day is spring in 2026?” the most precise calendar answer is:
    • Friday, March 20, 2026 for the astronomical start.
* But TV weather and climate stats may talk about **spring starting March 1** instead.

TL;DR:

  • Meteorological spring: March 1, 2026.
  • Astronomical spring (equinox, most common “official” answer): Friday, March 20, 2026.

Information gathered from public forums or data available on the internet and portrayed here.