Emergency services have made five flood rescues in northeastern NSW, but improved weather conditions have been forecast for the area.
One person in Teven, near Ballina, was rescued on Wednesday by State Emergency Services after getting stranded in the floodwaters.
Four cars with people inside were also rescued in the flooded rural Ballina and Lismore regions, where 182mm and 163mm of rain fell respectively.
Almost 100 calls were fielded overnight for flash flooding, sandbagging and leaking roofs.
"All persons are safe and well," NSW SES said on Thursday morning.
"With better weather today call volumes should be reduced."
Heavy conditions will continue to affect the far north of the state on Thursday but the Bureau of Meteorology says the severe weather will ease off later in the day.
Severe weather warnings have been issued for the northern rivers and tablelands regions, where heavy rains and damaging wins are expected.
Gale warnings have also been issued for the Byron Bay and Coffs Harbour coastlines, with seas expected to rise.