National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7°NLon: 74.8°WElev: 1404ft.

Fair

64°F

18°C

Humidity 93%
Wind Speed S 3 mph
Barometer 29.87 in (1011.4 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 13 Oct 8:56 pm EDT
Extended Forecast for

Niagara PA

  • Tonight

    Tonight: Mostly clear, with a low around 61. Southwest wind around 9 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers between 11am and noon. Increasing clouds, with a high near 69. West wind 8 to 11 mph. Chance of precipitation is 20%.

    High: 69 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 46. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 63. North wind around 6 mph becoming calm in the morning.

    High: 63 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Showers, with thunderstorms also possible after 5am. Low around 49. Southeast wind 5 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.

    Low: 49 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm before 8am, then showers between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 64. Chance of precipitation is 100%.

    High: 64 °F

    Showers

  • Friday Night

    Friday Night: A chance of rain showers before 5am, then a chance of rain and snow showers. Mostly cloudy, with a low around 34. Breezy. Chance of precipitation is 50%.

    Low: 34 °F

    Breezy.
    Chance
    Showers then
    Chance
    Rain/Snow

  • Saturday

    Saturday: A chance of snow showers before 8am. Mostly sunny, with a high near 41. Breezy. Chance of precipitation is 30%.

    High: 41 °F

    Breezy.
    Chance Snow
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 61. Southwest wind around 9 mph, with gusts as high as 20 mph.
Wednesday
A slight chance of showers between 11am and noon. Increasing clouds, with a high near 69. West wind 8 to 11 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 46. Northwest wind around 10 mph, with gusts as high as 20 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 63. North wind around 6 mph becoming calm in the morning.
Thursday Night
Showers, with thunderstorms also possible after 5am. Low around 49. Southeast wind 5 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Friday
Showers and possibly a thunderstorm before 8am, then showers between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 64. Chance of precipitation is 100%.
Friday Night
A chance of rain showers before 5am, then a chance of rain and snow showers. Mostly cloudy, with a low around 34. Breezy. Chance of precipitation is 50%.
Saturday
A chance of snow showers before 8am. Mostly sunny, with a high near 41. Breezy. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 30.
Sunday
Sunny, with a high near 53.
Sunday Night
Mostly clear, with a low around 36.
Monday
Mostly sunny, with a high near 59.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Niagara PA
 41.73°N 75.37°W (Elev. 1686 ft)
Last Update:
2:30 pm EDT Oct 13, 2026
Forecast Valid:
9pm EDT Oct 13, 2026-6pm EDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation