County in Illinois

Cook County Météo Prévisions

Cook County weather: 14°C, plutôt dégagé. Par heure forecast, 14-day outlook, UV, air quality and the best time à visit.

🌙 14°C now🕔 9:57 PM local📅 Best: mai, juin, août, septembre and octobre👥 5.1 million

Neige prévisions pour Cook County

No snow is in the current forecast window for Cook County.

0 of the next 16 nights are forecast à reach freezing.

Historically, average lows drop below freezing in janvier, février and décembre.

16-prévisions à Cook County

Maximales, minimales, précipitations et UV quotidiens.

JourConditionsMax / MinPrécip.VentUV
sam., oct 24☁️ Couvert18° / 9°1%15 km/h4
dim., oct 25☁️ Couvert21° / 9°2%12 km/h3
lun., oct 26☁️ Couvert14° / 11°2%21 km/h4
mar., oct 27☁️ Couvert19° / 12°1%14 km/h3
mer., oct 28☁️ Couvert21° / 14°2%14 km/h4
jeu., oct 29🌦️ Bruine20° / 16°8% · 2 mm19 km/h2
ven., oct 30🌦️ Bruine légère23° / 15°10% · 0 mm13 km/h3
sam., oct 31🌦️ Averses légères21° / 17°45% · 2 mm17 km/h2
dim., nov 1🌦️ Averses légères22° / 17°49% · 18 mm30 km/h3
lun., nov 2☁️ Couvert19° / 14°35%17 km/h3
mar., nov 3☁️ Couvert17° / 12°33%14 km/h2
mer., nov 4🌦️ Pluie légère13° / 10°22% · 9 mm18 km/h0
jeu., nov 5☁️ Couvert13° / 9°16%21 km/h3
ven., nov 6☁️ Couvert16° / 8°25%20 km/h3
sam., nov 7☁️ Couvert20° / 14°24%25 km/h2
dim., nov 8☁️ Couvert16° / 8°19%23 km/h3

Climat in Cook County month by month

Average high, average low and total rainfall, based on three years of reanalysis data.

janfémaravrmaijuijuisepoctnovdéLine: average high · Bars: rainfall
MoisMax moyenneMin moyennePrécipitationsÉvaluation
janvier-2°-8°73 mm★★☆☆☆
février4°-4°19 mm★★★☆☆
mars11°1°103 mm★★★☆☆
avril15°6°113 mm★★★☆☆
mai20°11°68 mm★★★★☆
juin26°18°126 mm★★★★☆
juillet28°20°127 mm★★★★☆
août27°19°116 mm★★★★☆
septembre24°17°74 mm★★★★☆
octobre18°10°79 mm★★★★☆
novembre10°3°68 mm★★★☆☆
décembre3°-3°68 mm★★☆☆☆

Climat type: Continental. Source : Open-Meteo archive (ERA5).

What à pack, what à skip

Pack for the next 7 days
  • Layers – the daily swing is 14°C, so mornings feel nothing like afternoons
Worth avoiding
  • If your dates are flexible, avoid janvier, février and décembre – historically the least comfortable months here.

Voir les prévisions de Cook County par période

Cook County weather – more answers

Explore Cook County

Every topic we hold for this place, and the same topic for the places around it.

Météo for related places

Frequently asked questions

Where is Cook County?

Cook County is a county in Illinois. Its coordinates are 41.8781, -87.6298. It lies in Amérique du Nord.

What is the weather like in Cook County maintenant?

It is currently 14°C (56°F) avec plutôt dégagé. Humidité is 84% and wind is 10 km/h.

When is the best time à visit Cook County?

mai, juin, août, septembre and octobre offer the most comfortable conditions in Cook County, which has a continental climate. janvier, février and décembre are usually the hardest months for outdoor plans.

What time zone is Cook County in?

Cook County observes America/Chicago (UTC-05:00). The heure locale is 9:57 PM.

How many people live in Cook County?

Cook County has a population of approximately 5.1 million.

What is the nearest airport à Cook County?

The closest airports are O'Hare International Airport (ORD), 25 km away.

What are the top things à do in Cook County?

Popular options include Indiana Dunes National Park, Starved Rock State Park and Lake Michigan.

Related articles

Data sources and methodology

Place dataUSPOTUS Atlas dataset (us-counties) – coordinates, hierarchy and facts.
Prévisions and observationsOpen-Meteo (ECMWF and national models).
Qualité de l’air and pollenCopernicus CAMS via Open-Meteo. US AQI scale.
Climat averagesERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years.
Official alertsUS National Météo Service.
MethodScores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing – the block is simply not shown.

Last updated octobre 24, 2026 at 9:57 PM heure locale. Live blocks refresh every 15 minutes; climate averages monthly.

Davil Hofile
Written byWriter at USPOTUS

Davil Hofile is a writer at USPOTUS covering breaking news, NFL updates, viral stories, entertainment, pets, and lifestyle. He specializes in transforming complex news into clear, trustworthy, and engaging articles that help readers quickly understand what's happening across the United States. His reporting follows Google's E-E-A-T guidelines, emphasizing accuracy, credible sources, and practical value for readers.

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