There is only one generation a year which occurs in early summer.

Some analysts suggested that may reflect the death of health care legislation, which occurred in late summer.

The events that brought the crisis to a head occurred in the spring and summer of 1956.

Most cases occur in the late spring and summer.

Fog or ice may occur inside the tunnel, even in summer.

The floods of the Mississippi usually occur in spring or summer.

Most events occur in spring and summer, when there are up to three events a week.

The breeding season occurs in the spring and early summer.

Breeding occurs in late summer with most activity after rain.

Rain occurs more frequently in late summer and early fall.