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CheckWeather USSussex

Sussex weather

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NWSNational Blend (NBM)
67°
Mainly clear
Feels 69° · Wind 3 mph · Humidity 78%
AmericanNOAA GFS
67°
Overcast
Feels 66° · Wind 5 mph · Humidity 61%
EuropeanECMWF
67°
Overcast
Feels 68° · Wind 5 mph · Humidity 79%

Latest for Sussex: NWS (National Blend (NBM)): 67° Mainly clear · American (NOAA GFS): 67° Overcast · European (ECMWF): 67° Overcast.

The weather map: all three models at once

NWS, American, European side by side around Sussex and nearby towns.Live rain radar →
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Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split

Sussex, WI is at its warmest in Jul (average highs near 81°F) and coldest in Jan (lows around 20°F), with roughly 39 in of precipitation across the year. Below, compare what NWS, American, European forecast for Sussex 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.

Sussex climate by month

average daytime high and overnight low across a typical year
Jan
31°
20°
Feb
40°
22°
Mar
44°
28°
Apr
57°
38°
May
69°
49°
Jun
78°
59°
Jul
81°
63°
Aug
79°
62°
Sep
75°
58°
Oct
62°
47°
Nov
47°
35°
Dec
37°
26°

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 Sussex today?
On this page we show what NWS, American, European each forecast for Sussex 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 Sussex today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Sussex 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 Sussex?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Sussex 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 Sussex?
July is typically the warmest month in Sussex, with average highs around 81°F.
How cold does Sussex get?
The coldest month in Sussex is January, when overnight lows average about 20°F.
How much rain does Sussex get?
Sussex sees roughly 39 in of precipitation a year, with April usually the wettest month.

Nearby

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