Fallbrook Weather in September

September in Fallbrook averages 30°C (86°F) during the day and 17°C (63°F) at night. With only 4.4 mm (0.2 in) of rainfall expected on average, it's a largely dry month.

Rainfall in Fallbrook in September

On average, there are about a single day with rain during this month, averaging 4.4 mm (0.2 in). If rain does fall, it tends to be a moderate shower rather than anything heavy.

Temperature in Fallbrook in September

If you're visiting Fallbrook in September, expect excellent temperatures with highs of 30°C (86°F) and overnight lows of 17°C (63°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep. It's the warmest month of the year on average, so summer clothing is the way to go.

Sunshine in Fallbrook in September

Expect sunny days throughout the month, with an estimated 290 hours of sunshine. This makes it a pleasant time to visit Fallbrook.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Fallbrook. Our weather planner can help you explore destinations with more pleasant weather conditions.