Phoenix has an arid climate, with very hot summers and temperate winters. The average summer high temperature is among the hottest of any populated area in the United States and approaches those of cities such as Riyadh and Baghdad. The temperature reaches or exceeds 100°F (38°C) on an average of 110 days during the year, including most days from late May through early September, and highs top 110 °F (43 °C) an average of 21 days during the year. On June 26, 1990, the temperature reached an all-time recorded high of 122 °F (50 °C).