Big Island Weather Forecast

    • 66
    • 84

    Slight Chance Thunderstorms

    • 69
    • 88

    Chance Rain Showers

    • 62
    • 87

    Slight Chance Thunderstorms

    • 55
    • 83

    Mostly Sunny

    • 51
    • 77

    Mostly Sunny

    • 56
    • 76

    Partly Sunny

    • 61
    • 80

    Partly Sunny

Today 19 May Chester

Partly sunny with a slight chance of Showers and Thunderstorms. Highs in the mid 80s. Southwest Winds around 5 Mph. Chance of rain 20 percent.

Tonight 19 May Chester

Partly cloudy this Evening, then becoming mostly cloudy. Lows in the mid 60s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Island Temperature Statistics

May Temperature

Lancaster County-mc Whirter Field (11.2 miles)

  • Lowest 6 May, 2025

    48.2 °F

  • Average May

    68.3 °F

  • Highest 1 May, 2025

    86 °F

Climate (2020–Present)

Lancaster County-mc Whirter Field (11.2 miles)

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  • Average Low 2020–2025

    52 °F

  • Average 2020–2025

    62.2 °F

  • Average High 2020–2025

    73.7 °F
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