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.

Overcast

40°F

4°C

Humidity 89%
Wind Speed S 7 mph
Barometer 30.42 in (1029.7 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 10 Apr 1:53 am EDT
Extended Forecast for

Tullytown PA

  • Overnight

    Overnight: Patchy fog after 3am. Patchy frost after 3am. Otherwise, mostly cloudy, with a low around 38. South wind around 5 mph.

    Low: 38 °F

    Patchy Frost
    and Patchy
    Fog

  • Friday

    Friday: Patchy fog before 9am. Patchy frost before 7am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 70. Southwest wind 5 to 10 mph.

    High: 70 °F

    Patchy Frost
    and Patchy
    Fog then
    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 49. South wind around 10 mph becoming west after midnight.

    Low: 49 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 65. Northwest wind around 15 mph, with gusts as high as 30 mph.

    High: 65 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 41. North wind 5 to 10 mph.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 80.

    High: 80 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog after 3am. Patchy frost after 3am. Otherwise, mostly cloudy, with a low around 38. South wind around 5 mph.
Friday
Patchy fog before 9am. Patchy frost before 7am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 70. Southwest wind 5 to 10 mph.
Friday Night
Increasing clouds, with a low around 49. South wind around 10 mph becoming west after midnight.
Saturday
Sunny, with a high near 65. Northwest wind around 15 mph, with gusts as high as 30 mph.
Saturday Night
Mostly clear, with a low around 41. North wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 66.
Sunday Night
Mostly cloudy, with a low around 51.
Monday
Mostly cloudy, with a high near 80.
Monday Night
Mostly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Mostly cloudy, with a low around 64.
Wednesday
Mostly sunny, with a high near 89.
Wednesday Night
Mostly cloudy, with a low around 65.
Thursday
Partly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tullytown PA
 40.14°N 74.83°W (Elev. 39 ft)
Last Update:
8:32 pm EDT Apr 9, 2026
Forecast Valid:
2am EDT Apr 10, 2026-6pm EDT Apr 16, 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

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Chance of Precipitation