Monday could see temperatures close to record levels in Northern Ireland, as summer finally arrives.
There will be highs of around 29 degrees, according to the Met Office.
That would be two degrees shy of last year's record-breaking high of 31.3 degrees in Castlederg in Co Tyrone.
Read more: NI public urged to call for an ambulance only in emergency during expected heatwave
Monday will see long spells where the sun is out, with any cloud clearing by mid-morning.
It should get hotter into the afternoon, potentially nearing that record high from last year.
Tuesday will be a little cooler, but temperatures could still hit around 26 degrees.
It will be cloudier from Tuesday as the week wears on with the possibility of some showers coming with that cloud cover.
Those showers should be more likely on Wednesday and Thursday.
It comes as England is under its first ever red weather warning for heat.
It means people's health and infrastructure could be impacted by the sizzling heat, with a high of 40 degrees forecasted for the first time ever.
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