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

Quakertown Airport (KUKT)

Lat: 40.44°NLon: 75.38°WElev: 509ft.

Fair

66°F

19°C

Humidity 100%
Wind Speed Calm
Barometer 30.14 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 18 May 12:15 am EDT
Extended Forecast for

Mertztown PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 65. Southwest wind around 5 mph.

    Low: 65 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 90. Light south wind becoming southwest 5 to 10 mph in the afternoon.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 69. South wind 5 to 10 mph.

    Low: 69 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 90. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71. Southwest wind 5 to 10 mph.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers, then showers and possibly a thunderstorm after 2pm. High near 86. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Slight Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm. Low around 53. Chance of precipitation is 80%.

    Low: 53 °F

    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 65. Southwest wind around 5 mph.
Monday
Sunny, with a high near 90. Light south wind becoming southwest 5 to 10 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 69. South wind 5 to 10 mph.
Tuesday
Sunny, with a high near 90. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 71. Southwest wind 5 to 10 mph.
Wednesday
A slight chance of showers, then showers and possibly a thunderstorm after 2pm. High near 86. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm before 8pm. Low around 53. Chance of precipitation is 80%.
Thursday
Partly sunny, with a high near 68.
Thursday Night
Partly cloudy, with a low around 50.
Friday
A chance of showers after 8am. Partly sunny, with a high near 66. Chance of precipitation is 40%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.
Saturday
Showers likely. Mostly cloudy, with a high near 67. Chance of precipitation is 60%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Sunday
Showers likely. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mertztown PA
 40.48°N 75.67°W (Elev. 896 ft)
Last Update:
4:09 pm EDT May 17, 2026
Forecast Valid:
2am EDT May 18, 2026-6pm EDT May 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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