4 Seasons Weather Dates Portable Jun 2026

Spring begins with the . On this day, the sun crosses the celestial equator from south to north. For those in the Northern Hemisphere, it marks the moment when day and night are nearly equal in length.

In 2026, seasonal dates are defined by two primary systems: (based on Earth's orbit and the sun) and meteorological (based on the calendar and temperature cycles). Because the Earth is tilted, the seasons are reversed between the Northern and Southern Hemispheres. 2026 Astronomical Seasons (Official/Solar)

December 21 or 22 Meteorological Start: December 1

June 1 – August 31 Duration: 92 days

To provide a useful report, it is important to note that weather seasons are defined in two ways: (based on the calendar and temperature cycles) and Astronomical (based on the position of the Earth relative to the sun).

September 1 – November 30 Duration: 91 days

The is the longest day of the year. It occurs when the North Pole is tilted at its maximum towards the sun. While this date marks the peak of solar radiation, the hottest temperatures usually arrive in July or August due to "seasonal lag"—the time it takes for the Earth’s oceans and landmasses to warm up. 4 seasons weather dates

Freezing temperatures, snow, and ice. Many plants go completely dormant, and many animals hibernate or migrate to warmer latitudes. Quick Reference: 2024–2025 Seasonal Dates 2024 Start Date 2025 Start Date Spring Summer Autumn September 22 September 22 Winter December 21 December 21 Why do the dates change?

You might notice that the astronomical start dates shift by a day or two each year. This happens because a "calendar year" (365 days) doesn't perfectly match the "solar year" (roughly 365.24 days). Our leap year system helps correct this, but it causes the exact moment of the equinox or solstice to drift slightly over time.

Autumn is the cooling transition period where daylight shortens significantly and temperatures drop toward freezing. Vegetation goes dormant, leading to foliage changes. Spring begins with the

Cooling temperatures and "senescence"—the process where leaves lose their chlorophyll and reveal vibrant reds, oranges, and yellows. It is traditionally the season of harvest and preparation for the cold months ahead. 4. Winter: The Season of Rest

March 1 – May 31 Duration: 92 days