Seneca Weather Forecast

    • 64
    • 87

    Mostly Cloudy

    • 64
    • 82

    Chance Thunderstorms

    • 63
    • 79

    Rain Showers Likely

    • 63
    • 79

    Chance Thunderstorms

    • 62
    • 77

    Chance Rain Showers

    • 59
    • 76

    Slight Chance Thunderstorms

Today 19 Sep La Salle

Partly cloudy through mid Morning, then becoming mostly cloudy. Scattered Showers and Thunderstorms late in the afternoon. Highs in the mid 80s. Southeast Winds around 5 Mph, becoming southwest in the afternoon. Chance of precipitation 30 percent.

Tonight 19 Sep La Salle

Mostly cloudy. Numerous Showers in the evening. Scattered Thunderstorms. Scattered Showers after midnight. Lows in the lower 60s. Southeast Winds around 5 Mph. Chance of precipitation 70 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Seneca Temperature Statistics

September Temperature

Joliet Regional Airport (26.1 miles)

  • Lowest 7 September, 2025

    40.1 °F

  • Average September

    65.9 °F

  • Highest 14 September, 2025

    88.5 °F

Climate (2020–Present)

Joliet Regional Airport (26.1 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    43.4 °F

  • Average 2020–2025

    53.5 °F

  • Average High 2020–2025

    63 °F
Get WillyWeather+ to remove ads