Bomb disposal units were dispatched to deal with rockets that landed within Israeli territory.
Eshkol Regional Council said five projectiles fell inside populated communities, including near a community centre and a kindergarten.
One rocket caused damage to buildings and vehicles, Haartez reported.
Israel said it struck 25 Hamas targets overnight in response.
Hamas spokesman Fawzi Barhoum praised the attacks as “a legitimate right that bombing is met with bombing” but did not take responsibility for them.