St. Pat's Weather Forecast
- 66
- 80
Mostly Cloudy
- 53
- 81
Becoming Sunny
- 63
- 81
Mostly Sunny
- 65
- 85
Slight Chance Thunderstorms
- 67
- 83
Mostly Cloudy
- 70
- 89
Chance Rain Showers
- 63
- 82
Chance Rain Showers
Today 9 Sep Northern Will
Cloudy. Temperatures in the upper 70s. West Winds 5 to 10 Mph.
Tonight 9 Sep Northern Will
Mostly cloudy. Humid. Lows in the mid 60s. West Winds around 5 Mph.
St. Pat's Temperature Statistics
September Temperature
Joliet Regional Airport (3.7 miles)
Lowest 7 September, 2026
60.1 °FAverage September
80.3 °FHighest 2 September, 2026
95.9 °F
Climate (2021–2026)
Joliet Regional Airport (3.7 miles)
Average Low 2021–2026
43.6 °FAverage 2021–2026
53.8 °FAverage High 2021–2026
63.4 °F