Grundy Center Weather Forecast

    • 63
    • 83

    Slight Chance Thunderstorms

    • 62
    • 84

    Partly Sunny

    • 65
    • 85

    Partly Sunny

    • 66
    • 86

    Rain Showers Likely

    • 62
    • 82

    Slight Chance Thunderstorms

    • 62
    • 83

    Partly Sunny

Today 5 Jul Grundy

Mostly sunny. A slight chance of Showers and Thunderstorms this afternoon. Highs in the lower 80s. Northeast Winds around 5 Mph. Chance of rain 20 percent.

Tonight 5 Jul Grundy

Mostly clear. A slight chance of Showers and Thunderstorms in the evening. Humid with Lows in the lower 60s. Northeast Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grundy Center Temperature Statistics

July Temperature

Marshalltown, Marshalltown Municipal Airport (18.6 miles)

  • Lowest 3 July, 2026

    64.9 °F

  • Average July

    78.8 °F

  • Highest 2 July, 2026

    91.7 °F

Climate (2021–2026)

Marshalltown, Marshalltown Municipal Airport (18.6 miles)

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  • Average Low 2021–2026

    39.7 °F

  • Average 2021–2026

    50.5 °F

  • Average High 2021–2026

    61.3 °F
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