St. Pat's Weather Forecast
- 65
- 86
Rain Showers Likely
- 67
- 76
Rain Showers Likely
- 67
- 81
Rain Showers Likely
- 69
- 83
Chance Rain Showers
- 67
- 86
Chance Rain Showers
- 63
- 80
Chance Rain Showers
Today 15 Sep Northern Will
Mostly cloudy. Showers likely early in the morning. A chance of Thunderstorms. A chance of Showers in the late morning and afternoon. More humid with Highs in the lower 80s. Southwest Winds 10 to 15 Mph, becoming west 5 to 10 Mph in the afternoon. Chance of precipitation 70 percent.
Tonight 15 Sep Northern Will
Mostly cloudy. A chance of Showers and Thunderstorms. Lows in the mid 60s. North Winds 5 to 10 Mph. Chance of precipitation 50 percent.
St. Pat's Temperature Statistics
September Temperature
Joliet Regional Airport (3.7 miles)
Lowest 11 September, 2026
55.4 °FAverage September
77.4 °FHighest 2 September, 2026
95.9 °F
Climate (2021–2026)
Joliet Regional Airport (3.7 miles)
Average Low 2021–2026
43.7 °FAverage 2021–2026
53.8 °FAverage High 2021–2026
63.4 °F