We had our first hot day of the year, 30 °Celsius (must be nearly 90 F), tomorrow it´ll be even warmer, then thunderstorms and cooler again. Only two days ago it was raining, foggy and only 11 or 12 °C (which must be about 53 F)!
Oh god, yes, we had an awful hot spell in 2003 with weather like cciaffone says, for about 4 weeks and no rain at all, the trees even lost leaves and the Rhine ran nearly dry, I mean, it´s our biggest river! No need for that again! Especially as nobody has air condition in Germany, and I haven´t even in my car.