Riverside Weather Forecast

    • 54
    • 80

    Mostly Sunny

    • 58
    • 80

    Mostly Sunny

    • 66
    • 85

    Partly Sunny

    • 71
    • 91

    Mostly Sunny

    • 73
    • 95

    Chance Thunderstorms

    • 71
    • 90

    Chance Thunderstorms

Today 21 Jul Northumberland

Sunny. Highs in the upper 70s. North Winds 5 to 10 Mph.

Tonight 21 Jul Northumberland

Mostly clear. Lows in the lower 60s. Northwest Winds around 5 Mph.

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  • Temperature Real-Time

Riverside Temperature Statistics

July Temperature

Selinsgrove Penn Valley Airport (15.5 miles)

  • Lowest 4 July, 2025

    57.7 °F

  • Average July

    76.6 °F

  • Highest 17 July, 2025

    90.6 °F

Climate (2020–Present)

Selinsgrove Penn Valley Airport (15.5 miles)

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  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    63.2 °F
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