St Louis 20 Day Forecast 2025 Schedule. Weather.com brings you the most accurate monthly weather forecast for st. The coldest and snowiest periods will occur in late january and early and late february.

Louis, missouri in 2025 is 28 °f which happened on jan 1. It may not rain or snow on every risky day, but if it does rain or snow during the month, expect most of it to be on a risky day.