IT WAS pretty nice to see a drop in temperatures on Monday, but what can we expect for the rest of the week?

It is summer, so it's no surprise it will be hot, but according to the Bureau of Meteorology, Lismore's temperatures are set to be all over the place.

On Wednesday, temperatures are set to rise 9C from yesterday's 27C, hitting 36C.

The BoM forecast explains: "A high pressure system over the Great Australian Bight has pushed milder air across most of the state, though it will remain hot to very hot over the far northern districts today (Wednesday), ahead of a weak southerly change over the far north of the state this evening."

But the roller coaster won't end there, dropping back to 27C on Thursday, before climbing back to 37C on the weekend.

There's also the chance of a thunderstorm every day up until at least Saturday, according to BoM.

Today will be cloudy, and there will be a 40 per cent chance of rain on Thursday and Friday - but even then, the prediction is only for up to 3mm of rain.

The minimum temperatures are what can make it hard to find any relief from the hot weather, and this week, they are not going to fall below 16C.

On Sunday, Lismore's temperatures reached 39.6 at the airport weather station, Casino hit 40.0, Evans Head reached 38.7, and Murwillumbah 36.2.

UPDATED TEMPERATURES

Lismore temperatures

Wednesday: Minimum 18, Maximum 36

Thursday: Minimum 17, Maximum 27

Friday: Minimum 16, Maximum 34

Saturday: Minimum 17, Maximum 34

Sunday: Minimum 20, Maximum 37

Ballina temperatures

Wednesday: Minimum 21, Maximum 32

Thursday: Minimum 19, Maximum 26

Friday: Minimum 19, Maximum 31

Saturday: Minimum 19, Maximum 31

Sunday: Minimum 21, Maximum 35

Byron Bay temperatures

Wednesday: Minimum 23, Maximum 30

Thursday: Minimum 21, Maximum 26

Friday: Minimum 21, Maximum 29

Saturday: Minimum 22, Maximum 29

Sunday: Minimum 23, Maximum 31

Casino temperatures

Wednesday: Minimum 20, Maximum 39

Thursday: Minimum 19, Maximum 31

Friday: Minimum 18, Maximum 37

Saturday: Minimum 19, Maximum 38

Sunday: Minimum 20, Maximum 41

Evans Head temperatures

Wednesday: Minimum 21, Maximum 32

Thursday: Minimum 20, Maximum 27

Friday: Minimum  20, Maximum 31

Saturday: Minimum 21, Maximum 31

Sunday: Minimum 23, Maximum 35

Tweed Heads temperatures

Wednesday: Minimum 23, Maximum 30

Thursday: Minimum 21, Maximum 29

Friday: Minimum 21, Maximum 31

Saturday: Minimum 21, Maximum 31

Sunday: Minimum 22, Maximum 32