Irwin Weather Forecast

    • 44
    • 54

    Rain Showers Likely

    • 21
    • 56

    Chance Rain Showers

    • 17
    • 35

    Partly Sunny

    • 17
    • 33

    Chance Snow

    • 16
    • 34

    Partly Sunny

    • 24
    • 38

    Mostly Cloudy

Today 18 Jan Southern Lancaster

Cloudy. Showers Likely, mainly in the morning. Highs in the mid 50s. South Winds around 5 Mph. Chance of rain 70 percent.

Tonight 18 Jan Southern Lancaster

Mostly cloudy with a 50 percent chance of Showers. Near steady temperature in the upper 40s. Southwest Winds around 5 Mph.

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Irwin Temperature Statistics

January Temperature

Lancaster County-mc Whirter Field (2.5 miles)

  • Lowest 8 January, 2025

    19.4 °F

  • Average January

    35.5 °F

  • Highest 1 January, 2025

    55.4 °F

Climate (2020–Present)

Lancaster County-mc Whirter Field (2.5 miles)

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  • Average Low 2020–2025

    52 °F

  • Average 2020–2025

    62.2 °F

  • Average High 2020–2025

    73.5 °F
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