Chicago Weather in May

May in Chicago sees daytime temperatures around 21°C (70°F) and lows of 11°C (52°F) at night. With around 118 mm (4.6 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Chicago in May

Expect around 12 days of rain based on historical data, with 118 mm (4.6 in) average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Chicago in May

Chicago in May gets highs of 21°C (70°F) during the day and drops to 11°C (52°F) at night. Even when the weather is stable, mornings and evenings can still feel distinctly cool. With lows of 11°C (52°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 Chicago in May

The month enjoys around 282 hours of sunshine, creating mostly sunny days with good weather conditions.

Wind Speed in Chicago in May

Wind speeds average 5 m/s (10 knots) during May. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.

For Chicago itself, September generally stands out with 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.