A month of rain falls in several days in some parts of NI
On average some areas of Antrim and Down have recorded more rainfall since Sunday night than they normally would during the entire month of September.
Three Northern Ireland weather stations make it into the top five of the UKs wettest spots since the rain began.
Killylane in County Antrim leads the way with 100.4mm (3.95ins) having fallen there up until 10:00 BST on Tuesday.
That figure is expected to rise as more rain is forecast for Tuesday.
Second was Ravensworth in North Yorkshire where 109.6mm (4.31ins) was recorded.
The weather has been keeping up with politics at Stormont too.
It has been quite stormy there with 90mm (3.54ins) of rain recorded and puts it in third place across the UK.
Altnahinch in County Antrim comes in fouth at 85.6mm (3.37ins)
As the rain has been coming in from the east it's hardly surprising that western areas have recorded less rainfall.
Castlederg clocked up 20.8mm (0.81ins) - a fifth of what some eastern areas have seen.
Rainy days and records
24 September saw a number of spots in east Antrim and north Down having their wettest September day on record.
In fact, Killylane and Stormont, both recorded their wettest day since September 1976.
It was also a colder day than normal on Monday.
Several Met Office stations recorded their coldest September day on record.
They include Glenanne (Armagh), Altnahinch (Antrim), and Lough Fea (Tyrone).