Southern Paraguay’s climate is humid, with rainfall distributed fairly evenly throughout the year. In the east, near the Brazilian border, it averages an abundant 2000mm a year, declining to about 1500mm near Asunción. Since elevations do not exceed 600m, temperatures are almost uniformly hot in summer – the average high in December, January and February is 35°C (95°F), with daily temperatures ranging between 25°C and 43°C (77°F to 109°F). Winter temperatures are more variable and can reach freezing or hover at 6°C (42°F), though the average high in July, the coldest month, is 22°C (71°F).
http://www.lonelyplanet.com/paraguay/weather
Arizona has a dry climate, with little rainfall. Temperatures vary greatly from place to place, season to season, and day to night. Average daily temperatures at Yuma, in the southwestern desert range from 43° to 67°F (6° to 19°C) in January, and from 81° to 106°F (27° to 41°C) in July. At Flagstaff, in the interior uplands, average daily January temperatures range from 14° to 41°F (–10° to 5°C), and average daily July temperatures range from 50° to 81°F (10° to 27°C). The maximum recorded temperature was 128°F (53°C), registered at Lake Havasu City on 29 June 1994; the minimum, –40°F (–40°C), was set at Hawley Lake on 7 January 1971.
I lived a few miles from Hawley Lake the winter of ‘75 - ‘76. It was COLD up there in Pinetop. Hawley Lake routinely would pop up as the coldest place in the lower 48 during that time. It always was weird to think we beat Montana, North Dakota, and Minnesota.