Maryland Heights (MO) Weather & Climate: Best Time to Visit

The climate in Maryland Heights is known for significant temperature differences throughout the year, making the weather dynamic. Average daytime temperatures reach a very warm 32°C (90°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 5°C (41°F).

At night, temperatures range from around 21°C (70°F) in July to -5°C (23°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Maryland Heights has a notably wet climate with abundant precipitation, recording 1144 mm (45 in) of rain/snowfall per year. Maryland Heights can be quite wet during June, receiving approximately 138 mm (5.4 in) of precipitation over 14 rainy days.

In contrast, during the driest month (January), you will experience much drier conditions, with 47 mm (1.9 in) of precipitation spread across 8 snowy/rainy days. For more details, please visit our Maryland Heights Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Maryland Heights can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 10.4 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 4.3 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Maryland Heights.

The city experiences its highest humidity in December, reaching 74%. In April, the humidity drops to its lowest level at 63%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year