(Note: In both common systems, months are the same – only start/end days differ slightly for astronomy.)
| Season | Months | |--------|--------| | | March, April, May | | Summer | June, July, August | | Autumn (Fall) | September, October, November | | Winter | December, January, February | season months in usa
| Season | Start (approx.) | End (approx.) | Typical months | |--------|----------------|---------------|----------------| | | March Equinox (Mar 20–21) | June Solstice (Jun 20–21) | March, April, May | | Summer | June Solstice (Jun 20–21) | September Equinox (Sep 22–23) | June, July, August | | Autumn (Fall) | September Equinox (Sep 22–23) | December Solstice (Dec 21–22) | September, October, November | | Winter | December Solstice (Dec 21–22) | March Equinox (Mar 20–21) | December, January, February | Note: Because astronomical seasons depend on exact planetary alignment, start/end dates can shift by a day. 3. Meteorological Seasons (Based on annual temperature cycles) Used by climatologists for consistent data comparison. These divide the year into fixed 3‑month periods. (Note: In both common systems, months are the
