How many days did it rain in Illinois in October 2026?

1 mm or more of precipitation was recorded on 1 days; the monthly total was 6.3 mm.

Where do the archive values come from?

They are the last update we made for that day from Open-Meteo weather model data. They are not official weather station measurements, so small differences are possible.

Weather · United States

Illinois Weather in October 2026

Illinois · October 2026 · Recorded days: 4

19°11°

Rain

Warmest day: 26°; October 14
Coldest night: 3°; October 17
Total precipitation: 6.3 mm
Wet days: 1
Dry days: 3
Recorded days: 4

Across the 4 recorded days of October 2026 in Illinois, the average high was 19°C and the average low 11°C. The warmest day was October 14 (26°C) and the coldest night October 17 (3°C). Total precipitation was 6.3 mm, with 1 mm or more on 1 days. The month is still in progress; each day is added once it ends.

October 2026: day by day

Days with a dashed border are forecasts.

Full archive

Frequently asked questions

How many days did it rain in Illinois in October 2026?: 1 mm or more of precipitation was recorded on 1 days; the monthly total was 6.3 mm.
What was the warmest day in Illinois in October 2026?: The warmest day was October 14 (26°C) and the coldest night October 17 (3°C).
Where do the archive values come from?: They are the last update we made for that day from Open-Meteo weather model data. They are not official weather station measurements, so small differences are possible.