St. Louis Weather in May

May in St. Louis typically sees daytime highs of 25°C (77°F) and nighttime lows of 14°C (57°F). Rainfall is also possible this month, so it's worth packing an umbrella.

Rainfall in St. Louis in May

You can expect rain on roughly 15 days based on historical data, averaging 120 mm (4.7 in) for the month. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.

Temperature in St. Louis in May

May in St. Louis brings typical temperatures with highs around 25°C (77°F) and lows of 14°C (57°F). Overall, the month follows a fairly predictable daily temperature pattern. With lows of 14°C (57°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in St. Louis in May

The days are predominantly sunny, with an estimated total of around 269 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

Should you favor a climate that's both dry and comfortably warm, October typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.