County in Illinois

Cook County 天気 予報

Cook County weather: 14°C, 曇り. 時間別 forecast, 14-day outlook, UV, air quality and the best timeからvisit.

☁️ 14°C now🕔 10:41 PM local📅 Best: 5月, 6月, 8月, 9月 and 10月👥 5.1 million

気候 in Cook County month by month

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

Line: average high · Bars: rainfall
月Avg highAvg low雨fallRating
1月-2°-8°73 mm★★☆☆☆
2月4°-4°19 mm★★★☆☆
3月11°1°103 mm★★★☆☆
4月15°6°113 mm★★★☆☆
5月20°11°68 mm★★★★☆
6月26°18°126 mm★★★★☆
7月28°20°127 mm★★★★☆
8月27°19°116 mm★★★★☆
9月24°17°74 mm★★★★☆
10月18°10°79 mm★★★★☆
11月10°3°68 mm★★★☆☆
12月3°-3°68 mm★★☆☆☆

気候 type: 大陸al. 出典: Open-Meteo archive (ERA5).

訪問に最適な時期 Cook County

Go in 5月, 6月, 8月, 9月 and 10月. These months score highest on comfortable temperatures, low rainfall and useful daylight.

Hardest months: 1月, 2月 and 12月 - expect the least comfortable mix of heat, cold or rain.

1月★★☆☆☆
2月★★★☆☆
3月★★★☆☆
4月★★★☆☆
5月★★★★☆
6月★★★★☆
7月★★★★☆
8月★★★★☆
9月★★★★☆
10月★★★★☆
11月★★★☆☆
12月★★☆☆☆

Recent extremes in Cook County

高いest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.

Hottest day36°C8月 27, 2024
Coldest night-25°C1月 15, 2024
Wettest day78 mm8月 1, 2026

How Cook County compares、nearby places

Annual averages, and the difference against Cook County.

PlaceDistanceAvg tempvs hereAnnual rain
Area Code 3120 km11°Cabout the same1034 mm
Chicago0 km11°Cabout the same1034 mm
The Loop1 km11°Cabout the same1034 mm
ZIP Code 606011 km11°Cabout the same1034 mm
Wicker Park5 km11°Cabout the same996 mm

Whatからpack, whatからskip

Pack for the next 7 days
  • Normal seasonal clothing - nothing unusual is needed this week
Worth avoiding
  • If your dates are flexible, avoid 1月, 2月 and 12月 - historically the least comfortable months here.

時間帯別のCook County 予報を見る

Cook County weather - more answers

Explore Cook County

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

天気 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 北アメリカ.

What is the weather like in Cook County現在?

It is currently 14°C (57°F)、曇り. 湿度 is 79% and wind is 9 km/h.

When is the best timeからvisit Cook County?

5月, 6月, 8月, 9月 and 10月 offer the most comfortable conditions in Cook County, which has a continental climate. 1月, 2月 and 12月 are usually the hardest months for outdoor plans.

What time zone is Cook County in?

Cook County observes America/Chicago (UTC-05:00). The local time is 10:41 PM.

How many people live in Cook County?

Cook County has a population of approximately 5.1 million.

What is the nearest airportからCook County?

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

What are the top thingsから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.
予報 and observationsOpen-Meteo (ECMWF and national models).
大気質 and pollenCopernicus CAMS via Open-Meteo. US AQI scale.
気候 averagesERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years.
Official alertsUS National 天気 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 10月 27, 2026 at 10:41 PM local time. 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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