Where I am currently, SW France, it was 44 degrees on Thursday - and about 38 in the middle of the night. Yesterday we had dark clouds and about an hour of rain which reduced the temperature ... but it was still rather warm. Overnight rain and today overcast with a bit of very light rain has dropped the temperature to about 20 degrees.
Most people have their doors wide open in an attempt to replace the hot air inside their houses with something a little more comfortable. However, many older houses have very thick stone walls and these act as heat sinks, still retaining the warmth captured earlier in the week.
The sun is due to return tomorrow, but without the Saharan .. err .. reinforcement.