The average temperature in Cleveland, OH the average temperature is 31.45 degrees in summer, with precipitation around 9.0 mm , Gillette, WY's temperatures reach 34.43 during the hot season, with 3.0 average of rain rate . In winter, however, weather indicators show around -22.44 degrees in Gillette, WY, compared to the -16.5 average degrees reported in Cleveland, OH. During the winter period, Cleveland, OH can register 9.0 mm precipitation, while Gillette, WY have an average of 0.9 mm rain level.