The 2 largest cities in Idaho are Boise with a population of  145,987 and Nampa with 81,557. The next 3 largest cities are  Meridian with 75,092, Idaho Falls with 56,813 and â¦ Pocatello with  54,255.
Averages for Washington DC in September. The weather in September in Washington DC is very attractive for those that want to avoid the peak heat of summer, yet still enjoy lots of warm days on their visit. On average, peak temperatures during the day in September still reach up to 27Â°C.
What's the weather like in Paris in September. Temperature. The weather begins to cool down in Paris, France in September, when the autumn season is just around the corner. The average temperature for this month starts off at 17.5Â°C on September 1st and drops down to 14.5Â°C by September 30th. Daily highs decrease from 22Â°C to 19Â°C across the month, almost never exceeding 27Â°C or falling under 14Â°C.