Romeoville Weather Forecast
- 48
- 67
Decreasing Clouds
- 46
- 72
Partly Sunny
- 42
- 63
Mostly Sunny
- 42
- 62
Partly Sunny
- 46
- 64
Rain Showers Likely
- 47
- 68
Partly Sunny
Today 8 May Northern Will
Mostly cloudy. Highs in the upper 60s. South Winds 5 to 10 Mph.
Tonight 8 May Northern Will
Partly cloudy. Lows in the upper 40s. Southwest Winds 5 to 10 Mph.
Romeoville Temperature Statistics
May Temperature
Lewis University Airport (3.1 miles)
Lowest 2 May, 2026
30.7 °FAverage May
51.6 °FHighest 4 May, 2026
79.6 °F
Climate (2021–Present)
Lewis University Airport (3.1 miles)
Average Low 2021–2026
43.5 °FAverage 2021–2026
52.4 °FAverage High 2021–2026
61.9 °F