Saint Louis Weather in March

The climate in Saint Louis during March can be summarized as cool and a little damp.

March is in the spring in Saint Louis and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 13°C (55°F), whilst at night 2°C (35°F) is normal.

On average March is the 5th wettest month of the year in Saint Louis with around 84mm 3.3 inches of rain making it a a little 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 6.9 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 Saint Louis in March 2024.