Palo Alto Weather in September

Palo Alto in September averages 26°C (79°F) during the day and 13°C (55°F) at night. This is part of the summer season. Minimal rainfall is to be expected.

Rainfall in Palo Alto in September

The climate data from previous years indicates about a single day of rain, averaging 2.7 mm (0.1 in) for the month. On the rare occasion it rains this month, it usually amounts to very little.

Temperature in Palo Alto in September

September in Palo Alto is generally excellent, with days reaching 26°C (79°F) and nights settling around 13°C (55°F). September is a notable month of the summer season. Overall, the month follows a fairly predictable daily temperature pattern. With lows of 13°C (55°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest. On average, this month sees the highest temperatures of the year. Worth packing a few lighter outfits.

Sunshine in Palo Alto in September

Enjoy a sunny month with about 270 hours of sunshine, the clear skies make Palo Alto even more beautiful.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. April, May, June, July, August, September and October typically offer the best weather for Palo Alto.