Thayer Weather Forecast

    • 67
    • 73

    Rain Showers

    • 54
    • 73

    Rain Showers

    • 49
    • 65

    Chance Rain Showers

    • 50
    • 65

    Mostly Cloudy

    • 51
    • 66

    Mostly Cloudy

    • 52
    • 69

    Partly Sunny

    • 51
    • 72

    Partly Sunny

Today 19 Sep Newton

Partly cloudy in the Morning, then becoming mostly sunny. Highs in the mid 70s.

Tonight 19 Sep Newton

Mostly cloudy. A chance of Showers in the evening. A chance of Thunderstorms. Showers likely after midnight. Humid. Lows in the upper 60s. East Winds around 5 Mph, becoming south after midnight. Chance of precipitation 70 percent.

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Thayer Temperature Statistics

September Temperature

Rensselaer Jasper County Airport (16.8 miles)

  • Lowest 14 September, 2026

    46.4 °F

  • Average September

    72.7 °F

  • Highest 15 September, 2026

    95 °F

Climate (2021–2026)

Rensselaer Jasper County Airport (16.8 miles)

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  • Average Low 2021–2026

    41.7 °F

  • Average 2021–2026

    51.4 °F

  • Average High 2021–2026

    61 °F
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