Overview
- Forecasts show the subtropical anticyclone consolidating over Italy from Thursday, May 21, driving a clear rise in daytime temperatures across much of the Centre-North.
- Many central and northern cities are expected to approach 28–30°C over the weekend, with parts of Sardinia seeing the highest values near 31–32°C.
- Widespread rain will retreat as the high pressure strengthens, though isolated afternoon convective showers or brief storms remain possible over the Alps and some central and southern interior zones before full stabilization.
- Meteo.it highlights an unusually high zero-degree isotherm around 4,000 metres on the western Alps this weekend, a sign of unusually warm air aloft that raises the freezing level and contributes to stronger daytime heating.
- Nighttime minima should stay relatively cool through the weekend but are forecast to rise from about May 25–27, risking early 'tropical nights' (≈20°C minima) in some urban areas and increasing heat and humidity impacts on sleep and energy demand.