Chapin Weather Forecast

    • 64
    • 75

    Rain Showers

    • 57
    • 74

    Chance Rain Showers

    • 52
    • 65

    Chance Rain Showers

    • 47
    • 60

    Chance Rain Showers

    • 44
    • 59

    Partly Sunny

    • 48
    • 64

    Partly Sunny

    • 51
    • 66

    Partly Sunny

Today 18 Sep Franklin

Mostly sunny. Highs in the upper 60s.

Tonight 18 Sep Franklin

Showers and Thunderstorms likely. Patchy fog. Lows in the mid 60s. Southeast Winds 5 to 10 Mph. Chance of rain 70 percent.

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Chapin Temperature Statistics

September Temperature

Mason City Municipal Airport (22.4 miles)

  • Lowest 16 September, 2026

    46 °F

  • Average September

    69.7 °F

  • Highest 4 September, 2026

    90.6 °F

Climate (2021–2026)

Mason City Municipal Airport (22.4 miles)

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  • Average Low 2021–2026

    37.3 °F

  • Average 2021–2026

    48 °F

  • Average High 2021–2026

    58.6 °F
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