Hardin Weather Forecast

    • 35
    • 86

    Becoming Sunny

    • 37
    • 54

    Mostly Cloudy

    • 43
    • 63

    Mostly Cloudy

    • 59
    • 77

    Slight Chance Thunderstorms

    • 40
    • 87

    Chance Thunderstorms

    • 30
    • 50

    Slight Chance Rain Showers

    • 37
    • 57

    Partly Sunny

Today 22 Mar Calhoun

Mostly cloudy. Highs in the mid 80s. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 22 Mar Calhoun

Partly cloudy this Evening, then clearing. Breezy and much cooler with Lows in the lower 30s. North Winds 15 to 25 Mph with Gusts up to 40 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hardin Temperature Statistics

March Temperature

St. Charles, St. Charles County Smartt Airport (18 miles)

  • Lowest 17 March, 2026

    14.6 °F

  • Average March

    50.3 °F

  • Highest 20 March, 2026

    89.1 °F

Climate (2021–Present)

St. Charles, St. Charles County Smartt Airport (18 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    68.7 °F
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