Barnhart Weather Forecast

    • 46
    • 75

    Sunny

    • 48
    • 79

    Mostly Sunny

    • 56
    • 83

    Mostly Sunny

    • 61
    • 90

    Mostly Sunny

    • 63
    • 92

    Mostly Sunny

    • 65
    • 93

    Mostly Sunny

Today 7 Sep Jefferson

Sunny. Highs in the mid 70s. Light and variable Winds, becoming north 5 to 10 Mph.

Tonight 7 Sep Jefferson

Clear. Lows in the mid 40s. Northeast Winds around 5 Mph in the Evening, becoming light and variable.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Barnhart Temperature Statistics

September Temperature

St. Louis Downtown Airport (19.9 miles)

  • Lowest 3 September, 2025

    55.9 °F

  • Average September

    68.9 °F

  • Highest 3 September, 2025

    87.1 °F

Climate (2020–Present)

St. Louis Downtown Airport (19.9 miles)

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

  • Average Low 2020–2025

    47.3 °F

  • Average 2020–2025

    57.8 °F

  • Average High 2020–2025

    68.5 °F
Get WillyWeather+ to remove ads