Best time to visit St. Louis

St. Louis is a city of two halves. October scores 81 and January scores 28 — a 53-point swing, which is the difference between a holiday and an endurance test. The month you pick matters more here than almost anywhere. Only 3 months come close to the top, which makes the timing narrow.

July is the warmest month at 31.2 °C and January the coolest at 4.1 °C — a 27.1 °C spread across the year. Around 63 days a year top 30 °C, concentrated in July and the months either side. At the other end, 103 nights a year fall below freezing: the winter here is a real one.

There is a real wet season here. May to July carry the rain — up to 15 wet days in a month — while January, February, November and December drop as low as 7. That 8-day gap is the biggest single difference between a good month and a bad one in St. Louis, and it moves further than the temperature does.

Daylight runs from 9.5 hours in winter to 14.8 in summer, enough to notice on a sightseeing itinerary.

The three strongest months are October, September, April. The one to think twice about is January. Each month below has its own page with rainfall reliability, extremes, daylight and crowd levels.

St. Louis month by month