Castle Grove Weather Forecast

    • 70
    • 86

    Rain Showers

    • 58
    • 81

    Chance Rain Showers

    • 55
    • 78

    Sunny

    • 63
    • 81

    Partly Sunny

    • 57
    • 79

    Chance Rain Showers

    • 60
    • 77

    Chance Thunderstorms

Today 8 Sep Jones

Mostly sunny. Highs in the upper 80s. South Winds 5 to 10 Mph.

Tonight 8 Sep Jones

Mostly cloudy. Near steady temperature in the mid 60s. Southeast Winds 5 to 10 Mph.

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  • Temperature Real-Time

Castle Grove Temperature Statistics

September Temperature

Monticello Regional Airport (8.1 miles)

  • Lowest 1 September, 2026

    68 °F

  • Average September

    80.4 °F

  • Highest 1 September, 2026

    93.2 °F

Climate (2021–2026)

Monticello Regional Airport (8.1 miles)

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  • Average Low 2021–2026

    37.3 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    58.5 °F
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