The World's Happiest And Saddest Countries. The United States is a nation in decline. Last year the land of the free and the home of the brave came in 10th place in the annual rankings of Worldâs Happiest Countries. This year the U.S.A. has slipped to 12th. This marks the first time in the six-year history of the Legatum Instituteâs Prosperity Index that America has not placed in the top 10.
Winter (June â August) Sydneyâs coolest months are June to August when average temperatures drop between 8.8 - 17Â°C (47.8 - 62.6Â°F). Sydneyâs rainfall is generally highest in June, with an average of 132 mm (5.2â), while July is the coolest month when average daytime temperatures reach just 13Â°C (55Â°F).
July is the hottest month of the year for most large US cities. Daytime temperatures above 80 degrees Fahrenheit (27 degrees Celsius) regularly occur nearly everywhere. The exceptions are cities along the Pacific coast.Seattle, San Francisco and San Diego stay cooler than elsewhere.hoenix and Las Vegas top the list this month of the hottest major cities in the United States with July temperatures averaging highs of well over 100 F (38 C) by day and nights that usually remain above 80 degrees F.