With a population of around 5,600, Weldon Spring sits in Missouri, United States. The city operates in the Central Time Zone.
In 2025, Weldon Spring recorded an average annual temperature of 57°F. The hottest temperatures reached 96°F in August; the coolest were -2°F in February. Total precipitation for the year was 46 inches, with the wettest month being April. Snowfall for the year totaled approximately 8 inches.
View current conditions and forecast for Weldon Spring · More cities in Missouri