Pomona Weather Forecast

    • 78
    • 96

    Slight Chance Thunderstorms

    • 80
    • 99

    Hot

    • 73
    • 95

    Mostly Sunny

    • 68
    • 90

    Mostly Sunny

    • 70
    • 90

    Partly Sunny

    • 70
    • 89

    Slight Chance Thunderstorms

Today 26 Jul Jackson

Mostly sunny. A slight chance of Showers and Thunderstorms in the morning. Hot with Highs in the mid 90s. Calm Winds, becoming southwest around 5 Mph in the afternoon. Chance of rain 20 percent. Highest heat index Readings heat index Readings up to 109 in the afternoon.

Tonight 26 Jul Jackson

Partly cloudy. Humid with Lows in the upper 70s. Southwest Winds around 5 Mph.

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Pomona Temperature Statistics

July Temperature

Southern Illinois Airport (11.8 miles)

  • Lowest 23 July, 2026

    62.6 °F

  • Average July

    80.3 °F

  • Highest 2 July, 2026

    95.6 °F

Climate (2021–2026)

Southern Illinois Airport (11.8 miles)

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  • Average Low 2021–2026

    48.2 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    69.4 °F
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