Fresno, California, experiences a transition from summer heat to milder autumn conditions during September. Typically, daytime temperatures gradually decrease throughout the month, ranging from the low 90s Fahrenheit (low 30s Celsius) at the beginning to the mid-80s Fahrenheit (high 20s Celsius) by the end. Overnight lows also cool, moving from the mid-60s Fahrenheit (high teens Celsius) to the mid-50s Fahrenheit (low teens Celsius). Rainfall is minimal, often averaging less than half an inch for the entire month. This period signifies the end of the region’s dry season, though the first significant rains of autumn are typically still weeks away.
Understanding the typical climate of this period is crucial for various activities, including agriculture, tourism, and outdoor recreation. Fresno County’s agricultural industry, a significant contributor to the local economy, benefits from the warm days and cool nights, which are ideal for ripening late-season crops. Tourists can enjoy comfortable sightseeing conditions without the extreme heat of summer. Moreover, the dry weather and moderate temperatures provide ideal conditions for outdoor activities such as hiking and cycling.