New Boston Weather Forecast

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    • 87

    Chance Rain Showers

    • 61
    • 82

    Chance Thunderstorms

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    • 84

    Chance Rain Showers

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    • 81

    Chance Thunderstorms

    • 61
    • 81

    Chance Rain Showers

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    Chance Rain Showers

Today 18 Sep Mercer

Partly sunny. A chance of Showers late this Morning, then a slight chance of Showers this afternoon. Highs in the upper 80s. South Winds around 5 Mph. Chance of rain 50 percent.

Tonight 18 Sep Mercer

Mostly cloudy with a slight chance of Thunderstorms. A chance of Showers in the Evening, then Showers likely after midnight. Lows in the mid 60s. East Winds around 5 Mph, becoming south after midnight. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

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New Boston Temperature Statistics

September Temperature

Muscatine (15.5 miles)

  • Lowest 7 September, 2025

    41 °F

  • Average September

    67.1 °F

  • Highest 13 September, 2025

    96.8 °F

Climate (2020–Present)

Muscatine (15.5 miles)

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  • Average Low 2020–2025

    42.2 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    62.8 °F
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