Clear blue skies and cooler winds from the south in the wake of a cold front are leading to a perfect day in the City of Churches this Saturday. However, the mercury is set to climb rapidly from Sunday, bringing a particularly warm night, followed by a very hot and dry day on Monday 19th. A high pressure system is currently settled over the state, following the recent passage of weak cold front. The lingeringly cool airmass and winds blowing from the southeast are contributing the the sunny yet mild day on Saturday, with temperatures unlikely to exceed 28 degrees. Winds are set to turn more northeasterly on Sunday as the airmass heats up inland, and temperatures in Adelaide are likely to reach the low 30s in the afternoon. Winds are set to turn northwesterly early on Monday and strengthen throughout the day ahead of a cold front, and this will help to push even warmer air from the interior further south. Following a warm night with temperatures remaining above 20 degrees, daytime temperatures are likely to reach the mid to high 30s across southern parts of the state on Monday, and Adelaide could reach 34-36 degrees. Hot and windy conditions ahead of the front will also bring an increased risk for any fires to spread rapidly, leading the South Australian Country Fire Service to issue a Severe Fire Danger Rating and Total Fire Ban for the Eastern Eyre Peninsula, Yorke Peninsula, Mid North, Adelaide and Mount Lofty Ranges for Monday 19th. The cool change and frontal showers should arrive early evening on Monday. Temperatures are expected to plummet by at least 15 degrees on Tuesday with persistent early morning showers, while the cool airmass should bring a run of cooler days into next weekend.