The RFS says,
"Saturday will be very hot, dry and windy. This combination can effect fire behaviour and cause smaller fires to increase in size and intensity quite rapidly. The lower-than-average humidity and strong winds - and presence of very high temperatures - is of great concern.
After another very warm night tonight, temperatures in the lower Mountains will climb into the mid-40's and the upper Mountains will see mid-to-high-30's. West- to North-West winds will strengthen during the day. A late wind change is possible later on Saturday evening.
Saturday will be very hot across Sydney with temperatures into the forties in many suburbs with a very warm night to follow, but cloudy conditions on Sunday and a cooler southerly change during the afternoon will provide welcome relief from the heat, according to the Bureau of Meteorology.
I'll be glad when tomorrow's over.
however im dreding the weeds in my paddocks that will pop their heads. a cool front will last all next week as well 
i pity you guys who had a week or more of 40, we had 2 days and i felt like i was in hell minus the pitchforks 
