Mason City Weather in May

The climate in Mason City during May can be summarized as mild and damp.

May is in the spring in Mason City and is typically the 5th warmest month of the year. Daytime maximum temperatures average around 22°C (71°F), whilst at night 8°C (47°F) is normal.

On average May is the 3rd wettest month of the year in Mason City with around 103mm 4.1 inches of rain making it a damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.7 hours of sunshine per day.

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 Mason City in May 2024.