Here's your all important Christmas weather forecast
WITH Christmas only a matter of days away, the Bureau of Meteorology outlook suggests anyone in the Clarence Valley with outdoor plans on Christmas Day to have a Plan B just to be safe.
Grafton is predicted to hit a top of 29C with Yamba set to hit 27C, but BOM duty forecaster Andrew Haigh said moist and unstable air will cause some widespread showers throughout the day.
"Christmas looks like it will be kind of hit or miss, either wet or dry in the Clarence Valley, depending on where you are," Mr Haigh said.
"Showers will be more likely near the coast, but it looks like a fairly unstable situation and showers will be scattered to widespread over the entire area, with some chance of thunderstorms."
Mr Haigh said there's a slow moving weather pattern across Australia, which features a high pressure system established over the Tasman Sea and an inland trough that could serve as a trigger for storms and showers to the west of the Valley.
"Moist and unstable air will result in the potential of storms and showers for much of NSW," he said.
"At times the upper atmosphere will play a part, which is why on Sunday it's a little more unstable which is probably the reason for the increased shower activity forecast."