Pomona Weather Forecast

    • 69
    • 84

    Chance Rain Showers

    • 69
    • 90

    Partly Sunny

    • 68
    • 91

    Partly Sunny

    • 69
    • 91

    Mostly Sunny

    • 69
    • 93

    Chance Rain Showers

    • 68
    • 90

    Chance Rain Showers

Today 11 Sep Jackson

Mostly cloudy. Patchy fog in the morning. A slight chance of Showers in the Morning, then a chance of Showers with a slight chance of Thunderstorms in the afternoon. Highs in the mid 80s. East Winds around 5 Mph. Chance of rain 50 percent.

Tonight 11 Sep Jackson

Mostly cloudy. Lows in the upper 60s. Calm Winds.

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Pomona Temperature Statistics

September Temperature

Southern Illinois Airport (11.8 miles)

  • Lowest 8 September, 2026

    59 °F

  • Average September

    84.9 °F

  • Highest 5 September, 2026

    103.6 °F

Climate (2021–2026)

Southern Illinois Airport (11.8 miles)

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  • Average Low 2021–2026

    48.2 °F

  • Average 2021–2026

    58.8 °F

  • Average High 2021–2026

    69.4 °F
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