The mercury climbed above 30 degrees in Canberra on Sunday but an afternoon thunderstorm gave the nation's capital a cooler afternoon.
It was a hot and humid start to Sunday with temperatures reaching 33 degrees about 1pm, Weatherzone meteorologist Ben McBurney said.
Sunday's maximum was a few degrees above the January average.
But the hot day was cooled down by some thunderstorms that rolled in about 2pm, bringing with it about 5 millimetres of rain.
There was also a chance of further storms in Canberra on Sunday night.
A severe thunderstorm warning was issued in the afternoon for most of New South Wales, including Berrima, Bundanoon, Moss Vale, Nowra and Colo.
However, the Bureau of Meteorology cancelled the warning about 8pm Sunday.
About 5pm, the Weather Bureau said the severe thunderstorms were moving north-east, with warnings that large hailstones, damaging winds and heavy rainfall that could lead to flash flooding were likely.