[Historical note: The ending to the musical is stirring with them marching over the mountains. This did not happen and going over the mountains from Salzburg would take them into Germany! What really happened is that since Captain von Trapp had dual citizenship (Austrian & Italian) he had his family fled with day packs by taking the train to Italy. From there they made their way ultimately to England and eventually the United States. They were already a well known singing group before the Germain takeover of Austria, so they had contacts in Europe and America. They gave up everything to be free. After the war, they learned their home had been taken over by Heinrich Himmler. The house was donated to the Catholic Church and Captain Trapp helped his fellow Austrians with a relief fund, for which he is fondly remembered for.]
The Summer Solstice occurred back on June 21 where the North Pole tilts directly towards the sun making more sunlight the farther north above the equator you live. It typically means more warmer days and nights though that greatly depends on where you live. Some places are known for hot summers while others are known for more mild conditions. Now if you live closer to the North Pole (Alaska, parts of Canada, and Scandinavian countries)the sun literally never sets during this time of year. Of course the reverse is true in the Southern Hemisphere. They get less sunlight on the June Solstice and the closer you are to the Antarctic Circle means less sunlight or total night. For them, it is the Winter Solstice. It is hard to believe Australia, for instance, gets cold but they do get cooler days and nights during this time.
Autumn is not that far away now. Technically it is still summer but the days are starting to get shorter now. Warm days still abound but now some chilly nights as well. Of course that depends on where you live. Some areas actually get warmer such as California due to seasonal changes in wind direction. More offshore winds usually means lots more warm air over California.
Still the signs that autumn is approaching are showing up. Already some trees are starting to loose leaves. Summer produce is now disappearing from the shelves to be replaced soon with fall produce. Blueberries, mangos, peaches and watermelons will soon be replaced by apples, grapes, cranberries and pumpkins. Of course since the growing season is different in the southern hemisphere, out of season produce here may appear on our shelves from places like Chile.