Greencastle Weather Forecast

    • 54
    • 81

    Partly Sunny

    • 58
    • 77

    Increasing Clouds

    • 57
    • 79

    Mostly Sunny

    • 53
    • 76

    Sunny

    • 55
    • 78

    Mostly Sunny

    • 62
    • 80

    Partly Sunny

    • 66
    • 83

    Chance Rain Showers

Today 30 May Putnam

Partly cloudy. Highs in the lower 80s. East Winds 5 to 10 Mph. Gusts up to 20 Mph late this afternoon.

Tonight 30 May Putnam

Partly cloudy. Lows in the mid 50s. East Winds 5 to 10 Mph. Gusts up to 20 Mph through the late overnight.

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Greencastle Temperature Statistics

May Temperature

Terre Haute Regional Airport (28 miles)

  • Lowest 7 May, 2026

    37.9 °F

  • Average May

    62.8 °F

  • Highest 19 May, 2026

    84.9 °F

Climate (2021–Present)

Terre Haute Regional Airport (28 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    55.7 °F

  • Average High 2021–2026

    65.8 °F
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