June is the wettest month of the year in Missouri that brings moderate to heavy rainfall in the state. Thunderstorms bring the majority of rainfall, which can cross 5" (127mm) to 7" (178mm) in 24 hours. The average high temperatures are between 80°F (26.7°C) to 87°F (30.6°C), while the average low temperatures are in the 61°F (16.1°C) to 66°F (18.9°C) range. Poplar Bluff in the south registers warm average temperatures in the 66°F (18.9°C) to 87°F (30.6°C) range, while Kirksville in the center is mild in the range of 61°F (16.1°C) to 81°F (27.2°C). June records 9 to 10 hours of bright sunshine. Humidity is high as the atmosphere is heavy with moisture-laden clouds. Missouri lies in the Tornado Alley of America, and summers are prone to tornadoes. Hailstorms are common and destroy crops. Wear a rain jacket or carry an umbrella. Avoid outdoor explorations in the afternoon when the chances of storms are the highest of the day. Expect rain and shine to alternate in June in Missouri.