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

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

62°F

17°C

Humidity 100%
Wind Speed N 5 mph
Barometer 29.59 in (1001.4 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 12 Mar 1:53 am EDT
Extended Forecast for

Tullytown PA

  • Overnight

    Overnight: A chance of showers, mainly after 4am. Mostly cloudy, with a low around 46. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Chance
    Showers

  • Thursday

    Thursday: Rain, mainly before 2pm. Temperature falling to around 40 by 5pm. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 55 °F⇓

    Rain

  • Thursday Night

    Thursday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 30. West wind around 5 mph.

    Low: 30 °F

    Gradual
    Clearing

  • Friday

    Friday: Partly sunny, with a high near 50. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 50 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40. South wind around 15 mph.

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 54.

    High: 54 °F

    Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 48. Chance of precipitation is 90%.

    Low: 48 °F

    Chance Rain
    then Rain

Detailed Forecast

Overnight
A chance of showers, mainly after 4am. Mostly cloudy, with a low around 46. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain, mainly before 2pm. Temperature falling to around 40 by 5pm. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 30. West wind around 5 mph.
Friday
Partly sunny, with a high near 50. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Partly cloudy, with a low around 40. South wind around 15 mph.
Saturday
Sunny, with a high near 53.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Cloudy, with a high near 54.
Sunday Night
Rain, mainly after 2am. Low around 48. Chance of precipitation is 90%.
Monday
Rain. High near 64. Chance of precipitation is 90%.
Monday Night
Rain and snow likely. Mostly cloudy, with a low around 30. Chance of precipitation is 60%.
Tuesday
A chance of snow. Mostly sunny, with a high near 39. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Mostly sunny, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tullytown PA
 40.12°N 74.83°W (Elev. 13 ft)
Last Update:
10:05 pm EDT Mar 11, 2026
Forecast Valid:
2am EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation