Allentown, PA Weather Forecast
Lehigh County, Pennsylvania
Live radar, warnings and storm tracking for Allentown, with free alerts the moment it counts.
The next few hours
A dry evening, mostly sunny
It is 39°, but the wind is taking it down to 35° on exposed skin. The sky is mostly sunny.
The wind turns to the north-northwest around 2 PM. Nothing in the next day and a half is wet enough to move plans for.
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Dry and warming through tomorrow
Nothing wet is expected over the next day and a half.
The overnight low settles near 34°. Tomorrow reaches 50°, 12° warmer than today.
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
31–62°F across the weekThe week runs between 30° and 62°, with Friday the warmest day of it. The second half leans warming, and today is the coolest day in it. Every day in the outlook stays dry.
Free alerts for Allentown
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Allentown, PA at a glance
Allentown is home to about 124,880 people in Lehigh County, across 18 square miles. It ranks 3rd by population of 970 places in Pennsylvania with a forecast here. The nearest neighbour with its own forecast is Salisbury, 3 miles away.
- County
- Lehigh County
- Population
- 124,880 2023 est.
- Land area
- 18 sq mi
- People per sq mi
- 7,110
- Forecast point
- 40.5936°N, 75.4784°W
How well can the network see Allentown?
The nearest Doppler radar is KDIX (Philadelphia, PA), to the SE. Its lowest scan passes about 5,900 ft above Allentown. The beam is above the lowest few thousand feet here, so a warning for Allentown can come before anything looks dramatic on radar.
The closest weather station is KXLL (Allentown/Queen City). Close enough that its readings are the conditions in town.
Forecasts near Allentown
- Salisbury, PA3 mi
- South Whitehall, PA4 mi
- Emmaus, PA4 mi
- Catasauqua, PA4 mi
- Fountain Hill, PA4 mi
- Whitehall, PA5 mi
- North Catasauqua, PA5 mi
- Coplay, PA5 mi
Elsewhere in Pennsylvania
PhiladelphiaPittsburghReadingErieUpper DarbyBethlehemAll Pennsylvania forecasts →