Monticello Weather Forecast

    • 60
    • 67

    Rain Showers

    • 60
    • 74

    Chance Rain Showers

    • 53
    • 80

    Mostly Cloudy

    • 47
    • 78

    Mostly Sunny

    • 47
    • 78

    Mostly Sunny

    • 51
    • 79

    Partly Sunny

Today 17 Aug Southeast Aroostook

Rain this Morning, then numerous Showers with isolated Thunderstorms this afternoon. Highs in the upper 60s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain near 100 percent.

Tonight 17 Aug Southeast Aroostook

Cloudy with scattered Showers. Patchy fog. Lows in the upper 50s. South Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Monticello Temperature Statistics

August Temperature

Houlton, Houlton International Airport (12.4 miles)

  • Lowest 15 August, 2026

    45 °F

  • Average August

    69.6 °F

  • Highest 5 August, 2026

    90.6 °F

Climate (2021–2026)

Houlton, Houlton International Airport (12.4 miles)

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  • Average Low 2021–2026

    33 °F

  • Average 2021–2026

    43.5 °F

  • Average High 2021–2026

    53.6 °F
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