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Forecast confidence: High · models disagree by 3°F

Havertown weather

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Partly cloudy,cooler tomorrow

NWS, the American and the European model agree on a high near 83° in Havertown today. Tomorrow looks cloudy around 75°, with a 3% chance of rain.

83°68°
75°61°
76°62°
69°60°
62°57°
63°54°
Todaymodels agreeTomorrowmodels agreeSundaysplit ±10°Mondaymodels agreeTuesdaysplit ±5°Wednesdaymodels agree
NWSNational Blend (NBM)
81°
Partly cloudy
Today 81°·Low 69°·Rain 20%
AmericanNOAA GFS
82°
Cloudy
Today 82°·Low 66°·Rain 20%
EuropeanECMWF
84°
Light drizzle
Today 84°·Low 70°·Rain 56%
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Havertown weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Havertown weather in numbers

from 30 years of measured normals

Havertown swings 57°F across the year, from 88°F highs in July to 31°F lows in February, and August is usually the wettest month in a year that brings about 49 in of precipitation.

Warmest month
July
88°F average high
Coldest month
February
31°F average low
Wettest month
August
49 in a year
Below freezing
1 month
February
Comfortable
4 months
April, May, September and October
Residents
50,000
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The weather map: all three models at once

NWS, American, European side by side around Havertown and nearby towns.Live rain radar →
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Havertown hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Havertown 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Partly cloudy
83° 68°
models agree
Tomorrow
Cloudy
75° 61°
models agree
Sun
Drizzle
76° 62°
±10°
Mon
Drizzle
69° 60°
models agree
Tue
Heavy drizzle
62° 57°
±5°
Wed
Light drizzle
63° 54°
models agree
Thu
Heavy drizzle
62° 55°
±5°
Fri
Drizzle
67° 54°
±6°
Sat
Cloudy
70° 54°
models agree
Sun
Partly cloudy
71° 56°
models agree
Mon
Light drizzle
73° 57°
models agree
Tue
Light drizzle
78° 58°
models agree
Wed
Rain
71° 61°
models agree
Thu
Cloudy
68° 55°
models agree

Havertown, Pennsylvania (PA) is at its warmest in Jul (average highs near 88°F) and coldest in Feb (lows around 31°F), with roughly 49 in of precipitation across the year. Below, compare what NWS, American, European forecast for Havertown 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.

Havertown climate by month

average daytime high and overnight low across a typical year
Jan
46°
32°
Feb
48°
31°
Mar
54°
36°
Apr
66°
46°
May
73°
53°
Jun
84°
63°
Jul
88°
70°
Aug
84°
66°
Sep
78°
61°
Oct
69°
50°
Nov
56°
39°
Dec
46°
33°

Which forecast is most accurate in Havertown?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
97
/100rank #1
95±0.5°F97±0.9 mph100100% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
73
/100rank #2
86±1.4°F95±1.4 mph4268% 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.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±3°81° to 84°±36%20% to 56% chance
Tomorrow±1°74° to 75°±1%2% to 3% chance
Sun±10°71° to 81°±12%70% to 82% chance
Mon±3°68° to 70°±1%70% to 71% chance
Tue±5°59° to 64°±10%25% to 35% 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 Havertown

today, local time
Sunrise
06:45
Sunset
19:04
Daylight
12h 19m

Common questions

What's the weather in Havertown today?
On this page we show what NWS, American, European each forecast for Havertown 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 Havertown today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Havertown 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 Havertown?
Over the last 30 days, the European model has been the most accurate for Havertown (CheckWeather Score 97/100), ahead of the American at 73. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Havertown?
July is typically the warmest month in Havertown, with average highs around 88°F.
How cold does Havertown get?
The coldest month in Havertown is February, when overnight lows average about 31°F.
How much rain does Havertown get?
Havertown sees roughly 49 in of precipitation a year, with August usually the wettest month.

Nearby

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