The average temperature in Ontario, CA the average temperature is 36.7 degrees in summer, with precipitation around 1.4 mm , Cody, WY's temperatures reach 31.78 during the hot season, with 3.0 average of rain rate . In winter, however, weather indicators show around -23.36 degrees in Cody, WY, compared to the -0.46 average degrees reported in Ontario, CA. During the winter period, Ontario, CA can register 3.0 mm precipitation, while Cody, WY have an average of 0.7 mm rain level.