For gardeners, farmers, and allergy sufferers, the biological spring now often begins before the astronomical equinox, especially in the eastern half of the country.

Understanding these distinctions is crucial for travel planning, agriculture, horticulture, allergy management, and interpreting climate data.

Data from the USA National Phenology Network (USA-NPN) and NOAA shows that spring is arriving earlier across most of the United States.

When will it finally be spring? The astronomical first day of spring in the Northern Hemisphere is marked by the spring equinox, w... USA Today Spring (season) - Wikipedia Meteorological reckoning * Meteorologists generally define four seasons in many climatic areas: spring, summer, autumn (fall), and... Wikipedia When does spring 2026 officially begin? It depends on your definition Mar 2, 2026 —

Here are some related posts about the spring season in the USA: