Joliet Weather in May

May in Joliet brings high temperatures around 22°C (72°F) during the day, dropping to 10°C (50°F) at night, with quite a bit of rainfall expected, averaging around 113 mm (4.4 in) for the month.

Rainfall in Joliet in May

Looking at the last 30 years, the data shows about 13 days with rain, averaging 113 mm (4.4 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Joliet in May

Daytime temperatures in Joliet reach 22°C (72°F) in May, dropping to 10°C (50°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 10°C (50°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Joliet in May

Enjoy a sunny month with about 282 hours of sunshine, the clear skies make Joliet even more beautiful.

If you prefer dry days with pleasant temperatures, September typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.