Illinois City Weather Forecast
- 73
- 82
Mostly Cloudy
- 76
- 89
Partly Sunny
- 74
- 93
Mostly Sunny
- 72
- 92
Chance Thunderstorms
- 71
- 87
Chance Thunderstorms
- 72
- 88
Slight Chance Thunderstorms
- 72
- 91
Mostly Sunny
Today 21 Jul Rock Island
Partly sunny. Highs in the lower 80s. East Winds 5 to 10 Mph.
Tonight 21 Jul Rock Island
Mostly cloudy. Humid with Lows in the lower 70s. East Winds 5 to 10 Mph.
Illinois City Temperature Statistics
July Temperature
Muscatine (13 miles)
Lowest 18 July, 2025
60.8 °FAverage July
76.4 °FHighest 3 July, 2025
93.2 °F
Climate (2020–Present)
Muscatine (13 miles)
Average Low 2020–2025
42.1 °FAverage 2020–2025
52.6 °FAverage High 2020–2025
62.8 °F