Cook County Éghajlat and Average Időjárás
Éghajlat of Cook County: average temperatures, rainfall and seasons month by month.
Éghajlat in Cook County month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Hónap | Avg high | Avg low | Esőfall | Rating |
|---|---|---|---|---|
| január | -2° | -8° | 73 mm | ★★☆☆☆ |
| február | 4° | -4° | 19 mm | ★★★☆☆ |
| március | 11° | 1° | 103 mm | ★★★☆☆ |
| április | 15° | 6° | 113 mm | ★★★☆☆ |
| máj | 20° | 11° | 68 mm | ★★★★☆ |
| június | 26° | 18° | 126 mm | ★★★★☆ |
| július | 28° | 20° | 127 mm | ★★★★☆ |
| augusztus | 27° | 19° | 116 mm | ★★★★☆ |
| szeptember | 24° | 17° | 74 mm | ★★★★☆ |
| október | 18° | 10° | 79 mm | ★★★★☆ |
| november | 10° | 3° | 68 mm | ★★★☆☆ |
| december | 3° | -3° | 68 mm | ★★☆☆☆ |
Éghajlat type: Kontinensal. Forrás: Open-Meteo archive (ERA5).
Recent extremes in Cook County
Magasest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Cook County compares és 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 |
Legjobb idő a látogatásra Cook County
Go in máj, június, augusztus, szeptember and október. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: január, február and december - expect the least comfortable mix of heat, cold or rain.
What this means for Cook County
Today is slightly warmer than average for október. The forecast high of 22°C is 3.6°C above the 18°C typical for this month.
Eső 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 június és augusztus.
The gap between the warmest and coldest month averages 29°C.
What és pack, what és skip
- Layers - the daily swing is 13°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid január, február and december - historically the least comfortable months here.
Összefoglaló
Cook County is a county in Illinois. Cook County is a county in the United States. Lakossága körülbelül 5.1 million.
Jelenleg 13°C (55°F) in Cook County és derült. A hőérzet 11°C. Ma a hőmérséklet 9°C és 22°C. A csapadék valószínűsége 1%. Sightseeing conditions score 9.3/10 - kiváló — indulhat.
A legjobb időszak Cook County is máj, június, augusztus, szeptember and október. Az éghajlat continental. január, február and december tend és be the least comfortable months. július is the warmest month és average highs near 28°C, while január is the coldest és lows near -8°C.
The closest major airport is O'Hare International Airport (ORD), about 25 km away. Nearby highlights include Indiana Dunes National Park, Starved Rock State Park and Lake Michigan.
Egyszerűen fogalmazva. Today is slightly warmer than average for október. The forecast high of 22°C is 3.6°C above the 18°C typical for this month. The best window és be outside is roughly 10 AM és 1 PM, when temperature, rain chance and wind line up best. hiking is the strongest bet in Cook County today at 9.7/10. 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
| Típus | County |
|---|---|
| State | Illinois |
| Ország | Egyesült Államok |
| Kontinens | Észak-Amerika |
| Koordináták | 41°52′41.2″N 87°37′47.3″W (41.8781, -87.6298) |
| Népesség | 5.100.000 |
| Helyi idő | 6:35 AM (UTC-05:00) |
| Best months | máj, június, augusztus, szeptember and október |
| Éghajlat | Kontinensal |
Időjárás map for Cook County
Animated model layers. Pick a layer és load it.
Animated layers by Szély. 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.
Éghajlat 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 Észak-Amerika.
What is the weather like in Cook County jelenleg?
It is currently 13°C (55°F) és derült. Páratartalom is 71% and wind is 8 km/h.
When is the best time és visit Cook County?
máj, június, augusztus, szeptember and október offer the most comfortable conditions in Cook County, which has a continental climate. január, február and december 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 6:35 AM.
How many people live in Cook County?
Cook County has a population of approximately 5.1 million.
What is the nearest airport és Cook County?
The closest airports are O'Hare International Airport (ORD), 25 km away.
What are the top things és 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. |
|---|---|
| Előrejelzés and observations | Open-Meteo (ECMWF and national models). |
| Levegőminőség and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Éghajlat averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Időjárás 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 október 26, 2026 at 6:35 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
