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 is the weather like in Washington, DC during June? The month of June is a nice time of year to explore the nationâs capital as the weather in June is mostly comfortable to warm. Early in June, morning low temperatures tend to be in the lower 60s F (15-17C) with a few of the cooler mornings dipping into the mid-50s F (12-13C). Afternoon highs early in the month tend to be near 80F (26-27C).