Menlo Park Weather in May

What's the weather like in Menlo Park (California) in May 2026?

The climate in Menlo Park during May can be summarized as mild and very dry.

May is in the spring in Menlo Park and is typically the 6th warmest month of the year. Daytime maximum temperatures average around 20°C (67°F), whilst at night 9°C (48°F) is normal.

Menlo Park weather averages (imperial / metric)
Daytime temperature 19.6°C 67.3°F
Nightly temperature 8.8°C 47.8°F
Average temperature 14.2°C 57.6°F
Daily sunshine 11.5 hrs
Avg rainfall 9 mm 0.4 ins
Rainy days 3 days
Sea temperature 11.8°C 53.2°F
Humidity 69%
Windspeed 20.2kph 13 mph

On average May is the 5th driest month of the year in Menlo Park with around 9mm 0.4 inches of rain making it a very dry time to visit.

On the flip side this corresponds to an average of 11.5 hours of sunshine per day.

May temperatures in Menlo Park

Menlo Park average temperature in May

May rainfall

Menlo Park average rain in May

May hourly sunshine

Menlo Park average rain in May

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Menlo Park in May 2025.