Caseyville Weather in May

May in Caseyville averages 25°C (77°F) during the day and 14°C (57°F) at night. Quite a bit of rainfall is typical this month, with around 134 mm (5.3 in) on average. An umbrella is a good idea.

Rainfall in Caseyville in May

This month experiences about 14 days of rain according to historical data, averaging 134 mm (5.3 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Caseyville in May

In May, Caseyville sees high temperatures, with highs of 25°C (77°F). Nights drop to around 14°C (57°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 14°C (57°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Caseyville in May

The month enjoys around 269 hours of sunshine, creating mostly sunny days with good weather conditions.

Should you favor a climate that's both dry and comfortably warm, September and October typically offer 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.