Old Furnace Weather Forecast

    • 62
    • 85

    Isolated Thunderstorms

    • 66
    • 90

    Slight Chance Thunderstorms

    • 69
    • 90

    Partly Sunny

    • 49
    • 82

    Rain Showers Likely

    • 48
    • 67

    Partly Sunny

    • 51
    • 67

    Rain Showers Likely

    • 55
    • 68

    Rain Showers Likely

Today 17 May Union

Mostly sunny with isolated Showers and Thunderstorms. Hot. Near steady temperature in the mid 80s. West Winds around 5 Mph. Chance of rain 20 percent.

Tonight 17 May Union

Partly cloudy. Isolated Showers and Thunderstorms this evening. Lows in the lower 60s. Southwest Winds around 5 Mph this Evening, becoming light and variable. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Old Furnace Temperature Statistics

May Temperature

Williamsport - Lycoming County Airport (11.2 miles)

  • Lowest 12 May, 2026

    32.6 °F

  • Average May

    53.9 °F

  • Highest 5 May, 2026

    81.6 °F

Climate (2021–Present)

Williamsport - Lycoming County Airport (11.2 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    63.2 °F
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