Williamsburg Weather Forecast

    • 61
    • 90

    Slight Chance Thunderstorms

    • 61
    • 85

    Partly Sunny

    • 63
    • 88

    Chance Thunderstorms

    • 60
    • 79

    Chance Thunderstorms

    • 63
    • 82

    Chance Thunderstorms

    • 62
    • 81

    Chance Rain Showers

    • 58
    • 82

    Chance Thunderstorms

Today 16 Sep Iowa

Mostly sunny with a slight chance of Showers and Thunderstorms. Highs in the upper 80s. Southeast Winds around 5 Mph. Chance of rain 20 percent.

Tonight 16 Sep Iowa

Mostly cloudy. Isolated Showers and Thunderstorms this evening. Lows in the lower 60s. East Winds around 5 Mph. Chance of rain 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Williamsburg Temperature Statistics

September Temperature

Cedar Rapids Airport (21.1 miles)

  • Lowest 7 September, 2025

    39.9 °F

  • Average September

    64.4 °F

  • Highest 13 September, 2025

    93 °F

Climate (2020–Present)

Cedar Rapids Airport (21.1 miles)

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

  • Average Low 2020–2025

    40.1 °F

  • Average 2020–2025

    50.5 °F

  • Average High 2020–2025

    60.8 °F
Get WillyWeather+ to remove ads