Cook County Klimaat and Average Weer
Klimaat of Cook County: average temperatures, rainfall and seasons month by month.
Klimaat in Cook County month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Maand | Gem. maximum | Gem. minimum | Neerslag | Beoordeling |
|---|---|---|---|---|
| januari | -2° | -8° | 73 mm | ★★☆☆☆ |
| februari | 4° | -4° | 19 mm | ★★★☆☆ |
| maart | 11° | 1° | 103 mm | ★★★☆☆ |
| april | 15° | 6° | 113 mm | ★★★☆☆ |
| mei | 20° | 11° | 68 mm | ★★★★☆ |
| juni | 26° | 18° | 126 mm | ★★★★☆ |
| juli | 28° | 20° | 127 mm | ★★★★☆ |
| augustus | 27° | 19° | 116 mm | ★★★★☆ |
| september | 24° | 17° | 74 mm | ★★★★☆ |
| oktober | 18° | 10° | 79 mm | ★★★★☆ |
| november | 10° | 3° | 68 mm | ★★★☆☆ |
| december | 3° | -3° | 68 mm | ★★☆☆☆ |
Klimaat type: Continental. Bron: Open-Meteo archive (ERA5).
Recent extremes in Cook County
Hoogest and lowest readings observed in the last 3 years of reanalysis data – not all-time records.
How Cook County compares met 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 |
Beste reistijd Cook County
Go in mei, juni, augustus, september and oktober. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: januari, februari and december – expect the least comfortable mix of heat, cold or rain.
What this means for Cook County
Today is about average for oktober. The forecast high of 17°C is in line met the 18°C typical for this month.
Regen 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 juni en augustus.
The gap between the warmest and coldest month averages 29°C.
What en pack, what en skip
- zoglasses, a brimmed hat and SPF 30+
- Layers – the daily swing is 18°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid januari, februari and december – historically the least comfortable months here.
Samenvatting
Cook County is a county in Illinois. Cook County is a county in the United States. Er wonen ongeveer 5.1 million.
Op dit moment is het 13°C (55°F) in Cook County met onbewolkt. Het voelt als 10°C. Vandaag ligt de temperatuur tussen 7°C en 17°C. De kans op neerslag is 0%. De omstandigheden voor sightseeing scoren 9.1/10 – uitstekend — ga nu.
De beste tijd om Cook County is mei, juni, augustus, september and oktober. Het klimaat is continental. januari, februari and december zijn meestal de minst comfortabele maanden. juli is de warmste maand, met gemiddelde maxima rond 28°C, terwijl januari is de koudste maand, met minima rond -8°C.
De dichtstbijzijnde grote luchthaven is O'Hare International Airport (ORD), about 25 km away. Nabijgelegen hoogtepunten zijn Indiana Dunes National Park, Starved Rock State Park and Lake Michigan.
Kort gezegd. Today is about average for oktober. The forecast high of 17°C is in line met the 18°C typical for this month. The best window en be outside is roughly 3 PM en 6 PM, when temperature, rain chance and wind line up best. stargazing is the strongest bet in Cook County today at 10/10. 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 |
| Land | Verenigde Staten |
| Continent | Noord-Amerika |
| Coördinaten | 41°52′41.2″N 87°37′47.3″W (41.8781, -87.6298) |
| Bevolking | 5.100.000 |
| Lokale tijd | 10:15 PM (UTC-05:00) |
| Beste maanden | mei, juni, augustus, september and oktober |
| Klimaat | Continental |
Weer map for Cook County
Animated model layers. Pick a layer en load it.
Animated layers by Windy. 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.
Klimaat 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 Noord-Amerika.
What is the weather like in Cook County nu?
It is currently 13°C (55°F) met onbewolkt. Luchtvochtigheid is 70% and wind is 14 km/h.
When is the best time en visit Cook County?
mei, juni, augustus, september and oktober offer the most comfortable conditions in Cook County, which has a continental climate. januari, februari 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 lokale tijd is 10:15 PM.
How many people live in Cook County?
Cook County has a population of approximately 5.1 million.
What is the nearest airport en Cook County?
The closest airports are O'Hare International Airport (ORD), 25 km away.
What are the top things en 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. |
|---|---|
| Voorspelling and observations | Open-Meteo (ECMWF and national models). |
| Luchtkwaliteit and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Klimaat averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weer 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 oktober 5, 2026 at 10:15 PM lokale tijd. Live blocks refresh every 15 minutes; climate averages monthly.
