Rain, thunderstorms and northerly winds are forecast for Sunday. Wind velocity will reach 6 on the Beaufort scale. Thunderstorms are forecast for the northern parts of the country while temperatures will fall under 30C and will range between 17C and 29C. Partly cloudy in the western parts and over the Ionian islands, rain will fall in mountainous areas of western Greece, temperatures between 19C and 31C. Rain and thunderstorms in the eastern parts, 19C-32C. Scattered clouds over the Aegean islands, 23C -32C. Rain in Athens, 21C-31C; the same for Thessaloniki, 19C-29C.