AIRCRAFT will be patrolling across Victoria as rain and lightning strikes cross the state today.

Yesterday CFA and Department of Sustainability and Environment crews fought a number of fast moving scrub and grass fires in extreme heat, which burnt about 500ha.

This morning all fires are contained.

DSE's state agency commander Kendra Dean told Weekly Times Now teams were not expecting a bad day.

"It's quite moist however there is quite a bit of lightning," she said.

"We'll be looking for lightning strikes. We'll have aircraft in the air and people in the towers."

She said efforts would be highest in Victoria's north west and the south west corner given both regions' dryness.

Last week several fires started in the south-west corner after lightning strikes.

"Yesterday there was some fast moving grass fires and air and ground crews worked quickly to contain them."

She called for people to look ahead at forecasts when conducting burns because it wasn't only the day of the burn they needed to worry about.

The CFA this morning said all fires were contained.