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.
Cook County weather in décembre
One of the harder months here – go in avec a plan.
décembre runs 11°C cooler than the annual average in Cook County.
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.
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).
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 à pack, what à skip
- Layers – the daily swing is 14°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid janvier, février and décembre – historically the least comfortable months here.
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 |
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 9:42 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 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 9:42 PM heure locale. Live blocks refresh every 15 minutes; climate averages monthly.
