Hardin Weather Forecast

    • 71
    • 84

    Chance Thunderstorms

    • 74
    • 94

    Mostly Sunny

    • 75
    • 96

    Mostly Sunny

    • 75
    • 96

    Mostly Sunny

    • 76
    • 96

    Mostly Sunny

    • 75
    • 96

    Mostly Sunny

Today 27 Jun Calhoun

Mostly cloudy. A slight chance of Showers in the morning. Areas of fog in the morning. Highs in the lower 80s. East Winds around 5 Mph, becoming south around 5 Mph in the afternoon. Chance of rain 20 percent.

Tonight 27 Jun Calhoun

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms. Patchy fog. Near steady temperature around 70. Light and variable Winds. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hardin Temperature Statistics

June Temperature

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

  • Lowest 16 June, 2026

    55.7 °F

  • Average June

    74.5 °F

  • Highest 17 June, 2026

    93.7 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    68.9 °F
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