Waltham residents now have another way to beat the heat — the city’s spray parks are opening early.

According to Mayor Jeanette McCarthy’s office, the city’s four spray parks are opening now, due to the high temperatures. Several other parks will open near the end of the month.

Warrendale (90 Charlotte Rd.) and Drake Playgrounds (3 Hazel. St.)

Monday – Friday: 3 – 7 p.m.

Saturdays: 10 a.m. — 3 p.m.

Sundays: 12 – 5 p.m.

Lowell Field (190 Grove St.) and McDonald Playground (8 Cutter St.)

Monday – Friday: 12 – 7 p.m.

Saturdays:  10 a.m. – 3 p.m.

Sundays: 12 – 5 p.m.

The parks are unsupervised and open only with permitting weather.