<P> The mistral is usually accompanied by clear , fresh weather , and it plays an important role in creating the climate of Provence . It can reach speeds of more than 90 km / h ( 56 mph ) , particularly in the Rhône Valley . Its average speed during the day can reach about 50 km / h ( 31 mph ) , calming noticeably at night . The mistral usually blows in winter or spring , though it occurs in all seasons . It sometimes lasts only one or two days , frequently lasts several days , and sometimes lasts more than a week . </P>
<P> The mistral is usually accompanied by clear , fresh weather , and it plays an important role in creating the climate of Provence . It can reach speeds of more than 90 km / h ( 56 mph ) , particularly in the Rhône Valley . Its average speed during the day can reach about 50 km / h ( 31 mph ) , calming noticeably at night . The mistral usually blows in winter or spring , though it occurs in all seasons . It sometimes lasts only one or two days , frequently lasts several days , and sometimes lasts more than a week . </P>
when do the mistral winds blow in provence
when do the mistral winds blow in provence
all seasons
all seasons