 However, summer high temperatures average 86 °F (30 °C) in July, and winter low average temperatures are 18 °F (−8 °C) in January and February.Average monthly precipitation ranges from about 2 to 4 inches (5 to 10 cm), with the heaviest occurring during May, June, and July.The highest recorded temperature was 110.0 °F (43.3 °C) on July 14, 1936, and the lowest recorded temperature was −25.0 °F (−31.7 °C) on January 21, 1985.