Saint Joseph (MO) Weather & Climate: Best Time to Visit

Depending on the time of the year, temperatures range from very warm to chilly in Saint Joseph. Average daytime temperatures reach a very warm 31°C (88°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 3°C (37°F).

At night, temperatures range from around 20°C (68°F) in July to -9°C (16°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Saint Joseph has a relatively rain/snowy climate with high precipitation levels, averaging 1011 mm (40 in) of rain/snowfall annually. Saint Joseph can be quite wet during May, receiving approximately 135 mm (5.3 in) of precipitation over 13 rainy days.

In contrast, during the driest month (January), you will experience much drier conditions, with 18 mm (0.7 in) of precipitation spread across 5 snowy/rainy days. For more details, please visit our Saint Joseph Precipitation page.

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

The average number of days each month with precipitation

Saint Joseph can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 10.8 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 4.9 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 Saint Joseph.

The city experiences its highest humidity in September, reaching 71%. In April, the humidity drops to its lowest level at 62%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year