Even coins such as the Morgan and Peace Silver Dollars have a little bit of copper (90% silver, 10% copper.) The circulating gold coins have some copper, too (ranging from 8.5% to 10%.) You can also rule out Nickels (which are actually 75% copper!) There is 10% copper in the pre-1965 Dimes, Quarters and Half Dollars, and the Cent, of course, was ...
Average Temperatures in Hanoi, Vietnam. The average annual temperature in Hanoi, Vietnam is fairly hot at 24.1 degrees Celsius (75.4 degrees Fahrenheit). There is a variation of mean monthly temperatures of 13 Â°C (23.4Â°F) which is a low range. The mean diurnal temperature variation/ range is 7.1 Â°C (12.8 Â°F). The hottest month is very hot having a mean temperature of 30 degrees Celsius (86 degrees Fahrenheit). January is the coldest month (very mild) having an average temperature of 17 degrees Celsius (62.6 degrees Fahrenheit). Average Temperatures Table for Hanoi
1 On average, the temperatures are always high. 2  A lot of rain (rainy season) falls in the months: April, May, June, July, August, September and October. 3  Hanoi has dry periods in January, February and December. 4  On average, the warmest month is April. 5  On average, the coolest month is December.  August is the wettest month.