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Allentown, PA 18109 Weather
Current conditions
Forecast for this hour (no station report in the last two hours)
Forecast
10-day-
This Afternoon
Sunny, with a high near 66. North wind around 10 mph.
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Tonight
Clear, with a low around 41. North wind 5 to 10 mph.
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Friday
Sunny, with a high near 61. Northeast wind 5 to 10 mph.
National Weather Service forecast updated 1 hr ago.
Hourly
Hourly forecast- Now66°
- 5 PM65°
- 6 PM63°
- 7 PM60°
- 8 PM55°
- 9 PM54°
- 10 PM52°
- 11 PM51°
- Fri12 AM50°
- 1 AM48°
- 2 AM47°
- 3 AM46°
- 4 AM45°
- 5 AM44°
- 6 AM43°
- 7 AM42°
- 8 AM42°
- 9 AM44°
- 10 AM49°
- 11 AM53°
- 12 PM56°
- 1 PM58°
- 2 PM59°
- 3 PM61°
10-day forecast
Details- TodayOct 22Sunny41°66°
- FriOct 23Sunny32°61°
- SatOct 24Patchy Frost then Sunny34°62°
- SunOct 25Patchy Frost then Sunny37°65°
- MonOct 26Sunny45°70°
- TueOct 27Sunny39°65°
- WedOct 28Partly Sunny43°61°
- ThuOct 29Cloudy42°66°
- FriOct 30Sunny38°56°
- SatOct 31Sunny34°56°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Allentown
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Seasonable sunshine and temperatures continue throughout the week in south central PennsylvaniaAt or above average temperatures and 10 days of dry weather ahead. Tuesday looks to be the warmest day of the workweek. Expect bright blue skies and highs climbing to around 70 degrees. From Wednesday through Friday…
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Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Forecast
- ThuGood (30)
- FriGood (30)
- SatGood (30)
Lehigh Valley, PA reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyAllentown Area, records since 1922. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Reading 53 km
- Bethlehem 6 km
- Norristown 58 km
- Easton 19 km
- Whitehall Township 6 km
- Hazleton 57 km
- Pottstown 47 km
- Limerick 46 km
- Phoenixville 57 km
- Lansdale 46 km
- Fullerton 3 km
- Horsham 57 km
Forecasters' discussion
From the National Weather Service office in PHI, issued 1 hr ago
What Has Changed
All three key messages have been updated.
Key Messages
1. Subtropical Storm Josephine located well off the Mid-Atlantic coast will continue to move off to the northeast through the end of the week, with coastal impacts and hazardous marine conditions gradually dwindling.
2. Elevated tide cycles persist due to Subtropical Storm Josephine well of the coast resulting in widespread minor coastal flooding continuing in Ocean County, NJ and Sussex County, DE.
3. Frost and freeze impacts possible Friday night and Saturday night where the growing season continues.
Discussion
KEY MESSAGE 1...Subtropical Storm Josephine located well off the Mid- Atlantic coast will continue to move off to the northeast through the end of the week, with coastal impacts and hazardous marine conditions gradually dwindling.
Subtropical Storm Josephine located well off the Mid-Atlantic coast will continue to move off to the northeast through the end of the week. Impacts will continue to dwindle for our coastal and marine areas. The multi-day north-northeast wind has resulted in elevated seas that will continue to lessen through the end of the week and into the weekend. These big waves breaking onto the beaches will result in some additional beach erosion, especially during the times of high tide. This will continue to lessen each day through the weekend.
An incoming system from the northwest will push across the region tonight, but no precipitation and minimal cloud cover is expected with it. Its main function is to move Josephine away. This is what will help further reduce the marine and coastal impacts, while providing a fresh shot of chilly air. A lingering tight pressure gradient into tonight starts to lessen tomorrow morning as high pressure builds into the region.
KEY MESSAGE 2...Elevated tide cycles persist due to Subtropical Storm Josephine well of the coast resulting in widespread minor coastal flooding continuing in Ocean County, NJ and Sussex County, DE.
As Subtropical Storm Josephine lingers well off the coast elevated tide cycles are persisting some areas.
In Ocean County, New Jersey and Sussex County, Delaware, water levels remain elevated and minor tidal flooding is continuing, particularly in the back bays. In fact a few locations in the back bays came very close to or even touched moderate levels of coastal flooding earlier today with the high tide. It's going to take some time for water levels to diminish in these areas so we've extended the Coastal Flood Advisory for these counties through Friday evening. Elsewhere along the Atlantic coast and Delaware Bay any additional coastal flooding looks to be spotty at most.
Aviation
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.
Rest of Today...VFR. North-northwest winds around 10-15 kt with a few gusts up to 20 kt possible. High confidence overall.
Tonight...VFR. North-northwest winds diminishing to 10 knots or less. High confidence.
Friday...VFR. Northeast winds around 10 knots. KACY has the potential to see gusts upwards of 20 knots. High confidence.
Outlook...
Saturday through Tuesday...VFR. No significant weather expected.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.