Sullivan County International Airport Weather Forecast

    • 21
    • 35

    Increasing Clouds

    • 28
    • 42

    Mostly Cloudy

    • 36
    • 50

    Rain Likely

    • 35
    • 54

    Chance Rain

    • 28
    • 54

    Chance Rain/Snow

    • 20
    • 41

    Mostly Sunny

Today 18 Mar Sullivan

Partly sunny. Highs in the upper 30s. Northwest Winds around 5 Mph, becoming southwest this afternoon.

Tonight 18 Mar Sullivan

Partly cloudy. Lows in the lower 20s. South Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Sullivan County International Airport Temperature Statistics

March Temperature

Monticello, Sullivan County International Airport (0 miles)

  • Lowest 2 March, 2026

    9 °F

  • Average March

    37.3 °F

  • Highest 10 March, 2026

    73.9 °F

Climate (2021–Present)

Monticello, Sullivan County International Airport (0 miles)

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

  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    45.7 °F

  • Average High 2021–2026

    55.1 °F
Get WillyWeather+ to remove ads