Chicago, IL

The extremes of a 155-year record (1871–2025) — full calendar-year totals. The long-run average is 34.71" a year.

The seasonal rhythm — each month's normal precipitation, with this year's totals in blue. Where the blue bar clears the band, the month ran wetter than usual.

Normally wettest in May (~3.46") and driest in Feb (~1.62"). Wettest calendar month ever: Aug 1987, 17.1".

Every year's rainfall on each of the next 7 dates at Chicago — toggle a day below. The tallest bar (ringed) is the wettest on record for that date.

Chicago's cumulative rainfall so far this year against its own record — the normal accumulation, and the wettest & driest years to date. The bright line is the running total; where it rides the band tells the story at a glance.

Chicago's entire daily record as one heatmap — each row a year, each cell a day, shaded by that day's rainfall. Dry spells read as dark blocks, wet seasons as brighter bands; the whole climate at a glance.

Every week of the U.S. Drought Monitor for Chicago's county since 2000, coloured by intensity — dry spells and multi-year droughts read as warm bands.