Helena Weather Forecast

    • 40
    • 65

    Mostly Sunny

    • 44
    • 70

    Partly Sunny

    • 47
    • 69

    Partly Sunny

    • 47
    • 67

    Partly Sunny

    • 43
    • 64

    Partly Sunny

Today 24 Sep Northern St. Lawrence

Patchy dense fog this morning. Sunny. Highs in the upper 60s. Light and variable Winds, becoming northeast around 10 Mph this afternoon.

Tonight 24 Sep Northern St. Lawrence

Clear. Lows around 40. Light and variable Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Helena Temperature Statistics

September Temperature

Massena, Massena International-Richards Field (5.6 miles)

  • Lowest 19 September, 2026

    37.7 °F

  • Average September

    61.7 °F

  • Highest 2 September, 2026

    81.6 °F

Climate (2021–2026)

Massena, Massena International-Richards Field (5.6 miles)

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

  • Average Low 2021–2026

    36 °F

  • Average 2021–2026

    46.2 °F

  • Average High 2021–2026

    55.9 °F
Get WillyWeather+ to remove ads