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Forecast confidence: High · models disagree by 2°F

South Shore weather

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Showers,much the same tomorrow

NWS, the American and the European model agree on a high near 80° in South Shore today. Tomorrow looks partly cloudy around 75°, with a 0% chance of rain.

80°73°
75°69°
76°64°
85°65°
82°73°
80°67°
Todaymodels agreeTomorrowmodels agreeMondaymodels agreeTuesdaymodels agreeWednesdaysplit ±11°Thursdaysplit ±9°
NWSNational Blend (NBM)
80°
Showers
Today 80°·Low 74°·Rain 35%
AmericanNOAA GFS
80°
Cloudy
Today 80°·Low 72°·Rain 35%
EuropeanECMWF
81°
Thunderstorm
Today 81°·Low 71°·Rain 71%

The weather map: all three models at once

NWS, American, European side by side around South Shore 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
Showers
80° 73°
models agree
Tomorrow
Partly cloudy
75° 69°
models agree
Mon
Cloudy
76° 64°
models agree
Tue
Cloudy
85° 65°
models agree
Wed
Light drizzle
82° 73°
±11°
Thu
Partly cloudy
80° 67°
±9°
Fri
Cloudy
83° 63°
±13°
Sat
Light drizzle
85° 69°
±8°
Sun
Light rain
80° 68°
±8°
Mon
Light rain
72° 64°
±5°
Tue
Light drizzle
71° 59°
±8°
Wed
Cloudy
71° 55°
±9°
Thu
Cloudy
74° 59°
±14°
Fri
Mostly clear
74° 61°
±10°

South Shore, IL is at its warmest in Jul (average highs near 79°F) and coldest in Jan (lows around 24°F), with roughly 42 in of precipitation across the year. Below, compare what NWS, American, European forecast for South Shore 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.

South Shore climate by month

average daytime high and overnight low across a typical year
Jan
34°
24°
Feb
43°
28°
Mar
47°
33°
Apr
58°
42°
May
67°
51°
Jun
77°
62°
Jul
79°
66°
Aug
79°
66°
Sep
74°
61°
Oct
64°
50°
Nov
51°
39°
Dec
40°
31°

Which forecast is most accurate in South Shore?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
87
/100rank #1
76±2.4°F92±2.5 mph9597% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
77
/100rank #2
82±1.8°F94±1.9 mph5877% 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°80° to 81°±36%35% to 71% chance
Tomorrow±2°75° to 77°models agree0% to 0% chance
Mon±2°76° to 78°models agree0% to 0% chance
Tue±2°84° to 87°±4%1% to 5% chance
Wed±11°76° to 87°±32%25% to 57% 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 South Shore

today, local time
Sunrise
06:20
Sunset
19:17
Daylight
12h 57m

Common questions

What's the weather in South Shore today?
On this page we show what NWS, American, European each forecast for South Shore 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 South Shore today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for South Shore 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 South Shore?
Over the last 30 days, the European model has been the most accurate for South Shore (CheckWeather Score 87/100), ahead of the American at 77. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in South Shore?
July is typically the warmest month in South Shore, with average highs around 79°F.
How cold does South Shore get?
The coldest month in South Shore is January, when overnight lows average about 24°F.
How much rain does South Shore get?
South Shore sees roughly 42 in of precipitation a year, with July usually the wettest month.

Nearby

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