temperature fresno
Average Temperatures for Fresno. Fresno's coldest month is December when the average temperature overnight is 37.0Â°F. In July, the warmest month, the average day time temperature rises to 96.6Â°F. Average Rainfall for Fresno. The driest month in Fresno is July with 0.01 inches of precipitation, and with 2.20 inches March is the wettest month.