Cook County Climat and Average Météo
Climat of Cook County: average temperatures, rainfall and seasons month by month.
Climat in Cook County month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Mois | Max moyenne | Min moyenne | Précipitations | Évaluation |
|---|---|---|---|---|
| janvier | -2° | -8° | 73 mm | ★★☆☆☆ |
| février | 4° | -4° | 19 mm | ★★★☆☆ |
| mars | 11° | 1° | 103 mm | ★★★☆☆ |
| avril | 15° | 6° | 113 mm | ★★★☆☆ |
| mai | 20° | 11° | 68 mm | ★★★★☆ |
| juin | 26° | 18° | 126 mm | ★★★★☆ |
| juillet | 28° | 20° | 127 mm | ★★★★☆ |
| août | 27° | 19° | 116 mm | ★★★★☆ |
| septembre | 24° | 17° | 74 mm | ★★★★☆ |
| octobre | 18° | 10° | 79 mm | ★★★★☆ |
| novembre | 10° | 3° | 68 mm | ★★★☆☆ |
| décembre | 3° | -3° | 68 mm | ★★☆☆☆ |
Climat type: Continental. Source : Open-Meteo archive (ERA5).
Recent extremes in Cook County
Élevéest and lowest readings observed in the last 3 years of reanalysis data – not all-time records.
How Cook County compares avec nearby places
Annual averages, and the difference against Cook County.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Area Code 312 | 0 km | 11°C | about the same | 1034 mm |
| Chicago | 0 km | 11°C | about the same | 1034 mm |
| The Loop | 1 km | 11°C | about the same | 1034 mm |
| ZIP Code 60601 | 1 km | 11°C | about the same | 1034 mm |
| Wicker Park | 5 km | 11°C | about the same | 996 mm |
Meilleur moment pour visiter Cook County
Go in mai, juin, août, septembre and octobre. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: janvier, février and décembre – expect the least comfortable mix of heat, cold or rain.
What this means for Cook County
Today is about average for octobre. The forecast high of 19°C is in line avec the 18°C typical for this month.
Pluie is very unlikely today – plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in juin à août.
The gap between the warmest and coldest month averages 29°C.
What à pack, what à skip
- Layers – the daily swing is 16°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid janvier, février and décembre – historically the least comfortable months here.
Résumé
Cook County is a county in Illinois. Cook County is a county in the United States. Sa population est d’environ 5.1 million.
Actuellement, il fait 13°C (56°F) in Cook County avec ciel dégagé. La température ressentie est de 12°C. Aujourd’hui, les températures vont de 7°C à 19°C. La probabilité de précipitations est de 0%. Les conditions pour les visites obtiennent 9.3/10 – excellent — partez maintenant.
La meilleure période pour visiter Cook County is mai, juin, août, septembre and octobre. Le climat est continental. janvier, février and décembre sont généralement les mois les moins confortables. juillet est le mois le plus chaud, avec des maximales moyennes proches de 28°C, tandis que janvier est le mois le plus froid, avec des minimales proches de -8°C.
L’aéroport principal le plus proche est O'Hare International Airport (ORD), about 25 km away. Parmi les sites à proximité, citons Indiana Dunes National Park, Starved Rock State Park and Lake Michigan.
En termes simples. Today is about average for octobre. The forecast high of 19°C is in line avec the 18°C typical for this month. The best window à be outside is roughly 1 PM à 4 PM, when temperature, rain chance and wind line up best. stargazing is the strongest bet in Cook County today at 9.8/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Cook County
| Type | County |
|---|---|
| State | Illinois |
| Pays | États-Unis |
| Continent | Amérique du Nord |
| Coordonnées | 41°52′41.2″N 87°37′47.3″W (41.8781, -87.6298) |
| Population | 5.100.000 |
| Heure locale | 4:33 AM (UTC-05:00) |
| Meilleurs mois | mai, juin, août, septembre and octobre |
| Climat | Continental |
Météo map for Cook County
Animated model layers. Pick a layer à load it.
Animated layers by Venty. For pin-level detail and nearby places, see the interactive map below.
Explore Cook County
Every topic we hold for this place, and the same topic for the places around it.
Climat 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 13°C (56°F) avec ciel dégagé. Humidité is 79% and wind is 11 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 4:33 AM.
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 data | USPOTUS Atlas dataset (us-counties) – coordinates, hierarchy and facts. |
|---|---|
| Prévisions and observations | Open-Meteo (ECMWF and national models). |
| Qualité de l’air and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climat averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Météo Service. |
| Method | Scores, 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 4:33 AM heure locale. Live blocks refresh every 15 minutes; climate averages monthly.
