Castle Rock Weather Forecast

    • 55
    • 74

    Chance Rain Showers

    • 56
    • 65

    Rain Showers

    • 54
    • 69

    Chance Rain Showers

    • 52
    • 65

    Mostly Cloudy

    • 52
    • 63

    Chance Rain Showers

    • 51
    • 66

    Slight Chance Rain Showers

Today 17 Sep Dakota

Mostly cloudy. A 20 percent chance of rain Showers early in the morning. Patchy fog early in the morning. Highs in the mid 70s. Northeast Winds up to 5 Mph.

Tonight 17 Sep Dakota

Mostly cloudy. A 40 percent chance of rain Showers after midnight. Lows in the mid 50s. East Winds up to 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Castle Rock Temperature Statistics

September Temperature

Minneapolis, Airlake Airport (6.8 miles)

  • Lowest 14 September, 2026

    42.8 °F

  • Average September

    69.6 °F

  • Highest 4 September, 2026

    91.4 °F

Climate (2021–2026)

Minneapolis, Airlake Airport (6.8 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    37.1 °F

  • Average 2021–2026

    47.1 °F

  • Average High 2021–2026

    56.6 °F
Get WillyWeather+ to remove ads