Griffith-Merrillville Airport Weather Forecast

    • 56
    • 78

    Rain Showers

    • 35
    • 68

    Chance Rain Showers

    • 31
    • 43

    Slight Chance Rain/Snow

    • 42
    • 61

    Mostly Sunny

    • 49
    • 71

    Mostly Cloudy

    • 33
    • 67

    Rain Showers Likely

Today 14 Mar Lake

Partly cloudy through mid Morning, then becoming mostly sunny. Windy. Highs in the upper 70s. Unseasonably warm. Southeast Winds 10 to 15 Mph with Gusts up to 30 Mph through mid Morning, increasing to south 15 to 25 Mph with Gusts up to 40 Mph in the afternoon.

Tonight 14 Mar Lake

Showers with Thunderstorms likely. Windy with Lows in the mid 50s. Unseasonably warm. South Winds 15 to 25 Mph early in the Evening, increasing to 20 to 30 Mph in the late evening and early Morning, then Diminishing to 10 to 20 Mph late. Gusts up to 45 Mph. Chance of precipitation near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Griffith-Merrillville Airport Temperature Statistics

March Temperature

Gary Regional Airport (6.2 miles)

  • Lowest 2 March, 2025

    12.2 °F

  • Average March

    38.5 °F

  • Highest 10 March, 2025

    69.8 °F

Climate (2020–Present)

Gary Regional Airport (6.2 miles)

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  • Average Low 2020–2025

    43.6 °F

  • Average 2020–2025

    51.3 °F

  • Average High 2020–2025

    60.5 °F
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