Skip to main content
Every US forecast, compared
checkweather.io
CheckWeather US›Philadelphia

Philadelphia weather

Loading live data…

The weather map: all three models at once

NWS, American, European side by side around Philadelphia 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

Philadelphia, MS is at its warmest in Aug (average highs near 94°F) and coldest in Jan (lows around 38°F), with roughly 53 in of precipitation across the year. Below, compare what NWS, American, European forecast for Philadelphia 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.

Philadelphia climate by month

average daytime high and overnight low across a typical year
Jan
57°
38°
Feb
65°
45°
Mar
69°
48°
Apr
73°
54°
May
84°
63°
Jun
90°
69°
Jul
91°
73°
Aug
94°
73°
Sep
87°
67°
Oct
79°
57°
Nov
68°
50°
Dec
60°
41°

Which forecast is most accurate in the US?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
89
/100rank #1
87±1.3°F96±1.2 mph8592% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
73
/100rank #2
81±1.9°F93±2.2 mph4972% 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.

Common questions

What's the weather in Philadelphia today?
On this page we show what NWS, American, European each forecast for Philadelphia 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 Philadelphia today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Philadelphia 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 Philadelphia?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Philadelphia forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in Philadelphia?
August is typically the warmest month in Philadelphia, with average highs around 94°F.
How cold does Philadelphia get?
The coldest month in Philadelphia is January, when overnight lows average about 38°F.
How much rain does Philadelphia get?
Philadelphia sees roughly 53 in of precipitation a year, with January usually the wettest month.

Nearby

LouisvilleKosciuskoForestMeridianStarkvilleCantonBrandonMadison

More US weather

Which forecast is most accurate in United States?US rain radarNWS vs American vs European: models comparedHow we measure forecast accuracyHow accurate is a 7-day forecast?Best time to visit PhiladelphiaAll US citiesHoliday weather abroadEmbed Philadelphia on your siteThe national forecast models, explained: NBM, UKMO, GEM and ACCESS