May brings warm temperatures in spring along with cloudy and wet conditions. The average daily temperatures are in the beautiful 70°F (21.1°C) to 75°F (23.9°C) range, while the nights are comfortable between 48°F (8.9°C) to 55°F (12.8°C). Carroll in the west averages in the comfortable 49°F (9.4°C) to 72°F (22.2°C) range, while Mason City in the central part is between 47°F (8.3°C) to 70°F (21.1°C) and Burlington in the eastern ranges between a warm 53°F (11.7°C) to 74°F (23.3°C). By May, the last remnants of snow disappear from the ground. Rain is substantial and registers an average of 5" (127mm) in the state. May is the start of the severe season of thunderstorms and tornadoes, and it is an excellent idea to avoid a visit to Iowa during these severe bouts of weather. Almost 16 days are sunny in May, while the rest are cloudy and moist. The corn season gains ground amid the cacophony of singing birds, animals, and visitors. Beware of stormy weather, including heavy rain with occasional hail.