Griffith-Merrillville Airport Weather Forecast

    • 47
    • 63

    Mostly Sunny

    • 56
    • 79

    Rain Showers

    • 35
    • 68

    Chance Rain/Snow

    • 31
    • 45

    Partly Sunny

    • 42
    • 57

    Mostly Sunny

    • 49
    • 69

    Mostly Cloudy

    • 33
    • 63

    Rain Showers Likely

Today 13 Mar Lake

Sunny. Highs in the mid 60s Inland, but only in the upper 40s near the lake. East Winds 5 to 10 Mph.

Tonight 13 Mar Lake

Clear in the Evening, then becoming partly cloudy. Lows in the upper 40s. East Winds 5 to 10 Mph in the Evening, becoming southeast after midnight.

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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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