Fullerton Weather Forecast

    • 67
    • 87

    Smoke

    • 69
    • 81

    Rain Showers

    • 60
    • 80

    Mostly Sunny

    • 65
    • 85

    Partly Sunny

    • 67
    • 86

    Rain Showers Likely

    • 62
    • 84

    Chance Rain Showers

Today 17 Jul Lehigh

Mostly sunny. Smoke in the Morning, then patchy smoke in the afternoon. Hot with Highs in the mid 80s. Northwest Winds around 5 Mph.

Tonight 17 Jul Lehigh

Mostly cloudy. Smoke. Lows in the mid 60s. Northwest Winds around 5 Mph.

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Fullerton Temperature Statistics

July Temperature

Allentown, Lehigh Valley International Airport (1.2 miles)

  • Lowest 8 July, 2026

    60.7 °F

  • Average July

    78.2 °F

  • Highest 2 July, 2026

    101.6 °F

Climate (2021–2026)

Allentown, Lehigh Valley International Airport (1.2 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    63.6 °F
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