Here is the weather forecast on the starting points for excursions to the central craters: Rifugio Sapienza and Piano Provenzana, where you can also find the ski lifts in winter season. Remember that Etna is a 3350 meters high mountain just a few miles from the sea, so weather can change unpredictably - take these forecasts with caution:
In case you want to climb to the top, we report also forecast for the summit of Etna, so you can get an idea of the wind and temperature: