August in Fresno averages a daily high of 36.7°C with nights around 19.9°C. Rain is rare — about 0.3 wet days and 0.3mm across the month. Generally workable, with some weather to plan around.
Across the year, the best time to visit Fresno is April.
Based on FRESNO YOSEMITE INTERNATIONAL, CA US (5.9km), 1995–2024. 30 years of August data.