Jamestown Weather Forecast

    • 57
    • 81

    Mostly Sunny

    • 63
    • 79

    Chance Rain Showers

    • 62
    • 80

    Chance Rain Showers

    • 59
    • 79

    Mostly Sunny

    • 58
    • 76

    Partly Sunny

    • 61
    • 76

    Partly Sunny

    • 63
    • 79

    Slight Chance Thunderstorms

Today 19 Aug Grant

Mostly sunny. Near steady temperature in the upper 70s. Light Winds.

Tonight 19 Aug Grant

Partly cloudy this Evening, then becoming mostly clear. Areas of fog after midnight. Lows in the mid 50s. Light Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Jamestown Temperature Statistics

August Temperature

Platteville Municipal Airport (8.7 miles)

  • Lowest 3 August, 2026

    59.9 °F

  • Average August

    73.7 °F

  • Highest 10 August, 2026

    84.2 °F

Climate (2021–2026)

Platteville Municipal Airport (8.7 miles)

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

  • Average Low 2021–2026

    40.8 °F

  • Average 2021–2026

    49.9 °F

  • Average High 2021–2026

    58.8 °F
Get WillyWeather+ to remove ads