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

Hazardous Weather Conditions

Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Fair

53°F

12°C

Humidity 38%
Wind Speed Vrbl 3 mph
Barometer 30.58 in (1036.5 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 18 Oct 12:53 pm EDT
Extended Forecast for

Chalfant PA

Frost Advisory October 19, 01:00am until October 19, 09:00am
Click here for hazard details and duration
Frost Advisory

  • This Afternoon

    This Afternoon: Sunny, with a high near 61. Calm wind.

    High: 61 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 2am. Patchy frost after 5am. Otherwise, clear, with a low around 36. Calm wind.

    Low: 36 °F

    Clear then
    Patchy Frost
    and Patchy
    Fog

  • Monday

    Monday: Patchy dense fog before 10am. Patchy frost before 9am. Otherwise, sunny, with a high near 65. Calm wind.

    High: 65 °F

    Patchy Frost
    and Patchy
    Dense Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 3am. Otherwise, clear, with a low around 37. Calm wind.

    Low: 37 °F

    Clear then
    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 10am. Otherwise, sunny, with a high near 66. Calm wind becoming north around 6 mph in the afternoon.

    High: 66 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 61. Calm wind.
Tonight
Patchy fog after 2am. Patchy frost after 5am. Otherwise, clear, with a low around 36. Calm wind.
Monday
Patchy dense fog before 10am. Patchy frost before 9am. Otherwise, sunny, with a high near 65. Calm wind.
Monday Night
Patchy fog after 3am. Otherwise, clear, with a low around 37. Calm wind.
Tuesday
Patchy fog before 10am. Otherwise, sunny, with a high near 66. Calm wind becoming north around 6 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
Sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 40.
Thursday
Sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 44.
Friday
Sunny, with a high near 65.
Friday Night
Mostly clear, with a low around 43.
Saturday
Sunny, with a high near 65.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chalfant PA
 40.4°N 79.84°W (Elev. 843 ft)
Last Update:
12:34 pm EDT Oct 18, 2026
Forecast Valid:
1pm EDT Oct 18, 2026-6pm EDT Oct 24, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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