Last 7 days
Today
21° / 15° High / Low (°C)
94% Humidity
100% Rain probability
Rain Condition
~11h Rain duration
What this means
In Chicago on 21 Jun 2026, rain is expected: 100% chance, up to 29.0 mm forecast (source: Open-Meteo).
Heavy rain is expected today for around 11 hours — 100% probability, up to 29.0mm forecast. An umbrella is the right call.
Rain season
Chicago gets rain through the year, with spring (April–May) the wettest season and summer producing heavy convective thunderstorms. Lake Michigan moderates temperature but also drives lake-effect precipitation in autumn and winter, when snow can accumulate rapidly and unpredictably. The wind genuinely amplifies the impact of wet weather — rain feels harder here than the numbers suggest.
Elsewhere in United States