Allentown, PA Weather Forecast
Local 7-day forecast
Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Allentown, PA in one place.
Rain showers and patchy fog before 1pm. Mostly cloudy, with a high near 75. West wind 0 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Local Weather Overview
This forecast page for Allentown, PA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: May 24, 2026 12:57 PM EDT.
The active forecast window currently covers May 25 to May 30, 2026 for Allentown, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 25 to May 30, 2026
- Latest sync
- May 24, 2026 12:57 PM EDT
- Forecast office
- PHI
- Source
- NOAA / NWS
Daily Outlook
This Week in Allentown
Wednesday looks like the warmest upcoming period in Allentown at 81 degrees F.
Friday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Thursday at about 0 to 10 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- May 24, 2026 12:57 PM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- PHI
- Radar station
- KDIX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly cloudy, with a low around 58. Northwest wind 0 to 5 mph.
Mostly cloudy, with a high near 77. Northwest wind around 0 mph.
Mostly cloudy, with a low around 61.
A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81.
A slight chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 61.
A slight chance of rain showers after 2pm. Mostly sunny, with a high near 79.
A slight chance of rain showers before 8pm. Partly cloudy, with a low around 55.
Sunny, with a high near 74.
Partly cloudy, with a low around 53.
Mostly sunny, with a high near 73.
Partly cloudy, with a low around 53.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Memorial Day
May 25
|
Rain Showers
|
75°F |
0 to 5 mph
W
|
|
Monday Night
May 25
|
Mostly Cloudy
|
58°F |
0 to 5 mph
NW
|
|
Tuesday
May 26
|
Mostly Cloudy
|
77°F |
0 mph
|
|
Tuesday Night
May 26
|
Mostly Cloudy
|
61°F |
0 mph
|
|
Wednesday
May 27
|
Partly Sunny then Slight Chance Showers And Thunderstorms
|
81°F |
0 to 5 mph
NW
|
|
Wednesday Night
May 27
|
Slight Chance Showers And Thunderstorms then Mostly Cloudy
|
61°F |
0 to 5 mph
NW
|
|
Thursday
May 28
|
Mostly Sunny then Slight Chance Rain Showers
|
79°F |
0 to 10 mph
NW
|
|
Thursday Night
May 28
|
Slight Chance Rain Showers then Partly Cloudy
|
55°F |
0 to 5 mph
N
|
|
Friday
May 29
|
Sunny
|
74°F |
0 to 10 mph
NW
|
|
Friday Night
May 29
|
Partly Cloudy
|
53°F |
5 to 10 mph
N
|
|
Saturday
May 30
|
Mostly Sunny
|
73°F |
5 mph
N
|
|
Saturday Night
May 30
|
Partly Cloudy
|
53°F |
0 to 5 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Allentown.
