United States Of America Guide

Country Facts

  • Full name: United States of America
  • Population: 314.7 million (UN, 2009)
  • Capital: Washington DC
  • Largest city: New York City
  • Area: 9.8 million sq km (3.8 million sq miles)
  • Major language: English
  • Major religion: Christianity
  • Life expectancy: 77 years (men), 81 years (women) (UN)
  • Monetary unit: 1 US dollar = 100 cents
  • Main exports: Computers and electrical machinery, vehicles, chemical products, food and live animals, military equipment and aircraft
  • GNI per capita: US $47,580 (World Bank, 2008)
  • Internet domain: .us
  • International dialling code: +1

Climatological Information

Month Mean Temperature oC Mean Total Precipitation (mm) Mean Number of Precipitation Days
Daily
Minimum
Daily
Maximum
Jan -2.9 5.7 69.1 7.8
Feb -1.6 7.7 68.8 7.3
Mar 3.2 13.6 80.5 8.0
Apr 8.0 19.3 68.8 7.6
May 13.7 24.6 93.0 8.9
Jun 19.2 29.3 85.9 7.5
Jul 21.9 31.4 96.5 7.8
Aug 21.1 30.5 99.3 7.4
Sep 16.9 26.7 84.1 5.9
Oct 10.2 20.6 76.7 5.7
Nov 5.1 14.6 79.2 6.7
Dec -0.2 8.3 79.2 7.1