Three Rivers Weather Forecast

    • 56
    • 80

    Slight Chance Thunderstorms

    • 57
    • 79

    Mostly Sunny

    • 58
    • 80

    Partly Sunny

    • 68
    • 83

    Partly Sunny

    • 65
    • 86

    Chance Rain Showers

    • 55
    • 79

    Slight Chance Rain Showers

Today 5 Sep St. Joseph

Mostly cloudy. A chance of Showers and Thunderstorms Early, then a slight chance of Thunderstorms this morning. A slight chance of Showers. Humid with Highs around 80. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 5 Sep St. Joseph

Mostly clear. Lows in the mid 50s. Northeast Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Three Rivers Temperature Statistics

September Temperature

Haines Memorial Airport (1.9 miles)

  • Lowest 1 September, 2026

    71.6 °F

  • Average September

    81.5 °F

  • Highest 2 September, 2026

    93.2 °F

Climate (2021–2026)

Haines Memorial Airport (1.9 miles)

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

  • Average Low 2021–2026

    42.1 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    60.3 °F
Get WillyWeather+ to remove ads