Grantfork Weather Forecast

    • 72
    • 93

    Mostly Sunny

    • 69
    • 96

    Rain Showers Likely

    • 62
    • 82

    Slight Chance Rain Showers

    • 65
    • 85

    Slight Chance Thunderstorms

    • 66
    • 89

    Slight Chance Thunderstorms

Today 8 Sep Madison

Mostly sunny. Highs in the mid 90s. Southeast Winds around 5 Mph.

Tonight 8 Sep Madison

Mostly clear. Lows in the lower 60s. East Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Grantfork Temperature Statistics

September Temperature

St. Louis Regional Airport (19.9 miles)

  • Lowest 1 September, 2026

    70.2 °F

  • Average September

    81.7 °F

  • Highest 5 September, 2026

    100.4 °F

Climate (2021–2026)

St. Louis Regional Airport (19.9 miles)

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

  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    54.5 °F

  • Average High 2021–2026

    66.7 °F
Get WillyWeather+ to remove ads