Monticello Weather Forecast

    • 48
    • 78

    Mostly Cloudy

    • 51
    • 77

    Chance Rain Showers

    • 36
    • 63

    Slight Chance Rain Showers

    • 30
    • 61

    Sunny

    • 42
    • 68

    Partly Sunny

    • 49
    • 74

    Partly Sunny

Today 17 Sep Southeast Aroostook

Patchy fog this morning. Mostly sunny. Highs in the mid 70s. Southwest Winds 5 to 10 Mph.

Tonight 17 Sep Southeast Aroostook

Mostly cloudy. Lows in the upper 40s. South Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Monticello Temperature Statistics

September Temperature

Houlton, Houlton International Airport (12.4 miles)

  • Lowest 9 September, 2025

    35.1 °F

  • Average September

    57.2 °F

  • Highest 1 September, 2025

    78.1 °F

Climate (2020–Present)

Houlton, Houlton International Airport (12.4 miles)

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

  • Average Low 2020–2025

    33.6 °F

  • Average 2020–2025

    44 °F

  • Average High 2020–2025

    53.8 °F
Get WillyWeather+ to remove ads