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CheckWeather USAllentown
Forecast confidence: High · models disagree by 2°F

Allentown weather

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Cloudy,rain likely tomorrow

NWS, the American and the European model agree on a high near 79° in Allentown today. Tomorrow looks drizzle around 77°, with a 29% chance of rain.

79°66°
77°61°
78°58°
81°57°
85°64°
79°68°
Todaymodels agreeTomorrowmodels agreeMondaymodels agreeTuesdaymodels agreeWednesdaysplit ±5°Thursdaysplit ±9°
NWSNational Blend (NBM)
80°
Partly cloudy
Today 80°·Low 65°·Rain 5%
AmericanNOAA GFS
78°
Cloudy
Today 78°·Low 66°·Rain 5%
EuropeanECMWF
79°
Cloudy
Today 79°·Low 66°·Rain 22%

The weather map: all three models at once

NWS, American, European side by side around Allentown and nearby towns.Live rain radar →
Loading the three model maps…

Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split
Today
Cloudy
79° 66°
models agree
Tomorrow
Drizzle
77° 61°
models agree
Mon
Partly cloudy
78° 58°
models agree
Tue
Cloudy
81° 57°
models agree
Wed
Cloudy
85° 64°
±5°
Thu
Light drizzle
79° 68°
±9°
Fri
Mostly clear
78° 63°
±9°
Sat
Mostly clear
80° 59°
±8°
Sun
Mostly clear
85° 64°
±8°
Mon
Drizzle
84° 66°
±13°
Tue
Drizzle
80° 63°
±21°
Wed
Light drizzle
72° 58°
models agree
Thu
Cloudy
74° 57°
models agree
Fri
Cloudy
69° 58°
±10°

Allentown, PA is at its warmest in Jul (average highs near 87°F) and coldest in Feb (lows around 27°F), with roughly 44 in of precipitation across the year. Below, compare what NWS, American, European forecast for Allentown right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Allentown climate by month

average daytime high and overnight low across a typical year
Jan
43°
29°
Feb
46°
27°
Mar
51°
33°
Apr
64°
42°
May
72°
50°
Jun
82°
60°
Jul
87°
67°
Aug
82°
63°
Sep
76°
58°
Oct
67°
47°
Nov
54°
36°
Dec
44°
30°

Which forecast is most accurate in Allentown?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
93
/100rank #1
89±1.1°F97±1.1 mph9597% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
66
/100rank #2
75±2.5°F95±1.5 mph3665% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±2°78° to 80°±17%5% to 22% chance
Tomorrow±1°77° to 78°±18%11% to 29% chance
Mon±1°77° to 78°±4%0% to 4% chance
Tue±1°80° to 81°±2%0% to 2% chance
Wed±5°82° to 87°±6%7% to 13% chance

The models often agree on temperature and still split on rain — and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Allentown

today, local time
Sunrise
06:33
Sunset
19:27
Daylight
12h 54m

Common questions

What's the weather in Allentown today?
On this page we show what NWS, American, European each forecast for Allentown today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Allentown today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Allentown and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Allentown?
Over the last 30 days, the European model has been the most accurate for Allentown (CheckWeather Score 93/100), ahead of the American at 66. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Allentown?
July is typically the warmest month in Allentown, with average highs around 87°F.
How cold does Allentown get?
The coldest month in Allentown is February, when overnight lows average about 27°F.
How much rain does Allentown get?
Allentown sees roughly 44 in of precipitation a year, with December usually the wettest month.

Nearby

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