La Mesa Weather in September

September is one of the excellent months to visit La Mesa, with daytime temperatures of 30°C (86°F) and lows of 17°C (63°F) at night. Rainfall is minimal, averaging just 4.2 mm (0.2 in) for the month.

Rainfall in La Mesa in September

Historically, September sees about a single day of rain, with a monthly average of 4.2 mm (0.2 in). On the rare occasion it rains, expect a brief, moderate shower rather than a heavy downpour.

Temperature in La Mesa in September

September is a excellent month in La Mesa, with 30°C (86°F) during the day and 17°C (63°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. Nights cool down to 17°C (63°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions. This is typically the warmest month of the year, so light summer clothing is a good idea.

Sunshine in La Mesa in September

The days are predominantly sunny, with an estimated total of around 253 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

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