Skip to main content
One weather site to rule them all
checkweather.io

Sewell weather

Loading live data…

Sewell weather alerts and warnings

active National Weather Service watches, warnings and advisories

Checking the National Weather Service for active alerts covering Sewell…

Sewell weather in numbers

from 30 years of measured normals

Sewell swings 57°F across the year, from 89°F highs in July to 32°F lows in February, and December is usually the wettest month in a year that brings about 43 in of precipitation.

Warmest month
July
89°F average high
Coldest month
February
32°F average low
Wettest month
December
43 in a year
Below freezing
Never
overnight lows stay above 32°F
Comfortable
4 months
April, May, September and October
Residents
37,000
share this forecast

The weather map: all three models at once

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

Sewell 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

Loading the three models…

Sewell 10-day forecast, out to 14 days

where the models agree, and where they split

Sewell, New Jersey (NJ) is at its warmest in Jul (average highs near 89°F) and coldest in Feb (lows around 32°F), with roughly 43 in of precipitation across the year. Below, compare what NWS, American, European forecast for Sewell 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.

Sewell climate by month

average daytime high and overnight low across a typical year
Jan
47°
33°
Feb
49°
32°
Mar
55°
36°
Apr
67°
47°
May
73°
54°
Jun
84°
63°
Jul
89°
71°
Aug
85°
67°
Sep
78°
61°
Oct
70°
51°
Nov
57°
40°
Dec
47°
33°

Which forecast is most accurate in Sewell?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
84
/100rank #1
92±0.8°F98±0.8 mph6581% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
72
/100rank #2
79±2.1°F95±1.6 mph4771% 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)
Loading ratings…
AmericanNOAA GFS
Loading ratings…
EuropeanECMWF
Loading ratings…

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.

Common questions

What's the weather in Sewell today?
On this page we show what NWS, American, European each forecast for Sewell 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 Sewell today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Sewell 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 Sewell?
Over the last 30 days, the European model has been the most accurate for Sewell (CheckWeather Score 84/100), ahead of the American at 72. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Sewell?
July is typically the warmest month in Sewell, with average highs around 89°F.
How cold does Sewell get?
The coldest month in Sewell is February, when overnight lows average about 32°F.
How much rain does Sewell get?
Sewell sees roughly 43 in of precipitation a year, with December usually the wettest month.

Nearby

More US weather