Cook County Climă and Average Vreme
Climă of Cook County: average temperatures, rainfall and seasons month by month.
Climă in Cook County month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Lună | Avg high | Avg low | Ploaiefall | Rating |
|---|---|---|---|---|
| ianuarie | -2° | -8° | 73 mm | ★★☆☆☆ |
| februarie | 4° | -4° | 19 mm | ★★★☆☆ |
| martie | 11° | 1° | 103 mm | ★★★☆☆ |
| aprilie | 15° | 6° | 113 mm | ★★★☆☆ |
| mai | 20° | 11° | 68 mm | ★★★★☆ |
| iunie | 26° | 18° | 126 mm | ★★★★☆ |
| iulie | 28° | 20° | 127 mm | ★★★★☆ |
| august | 27° | 19° | 116 mm | ★★★★☆ |
| septembrie | 24° | 17° | 74 mm | ★★★★☆ |
| octombrie | 18° | 10° | 79 mm | ★★★★☆ |
| noiembrie | 10° | 3° | 68 mm | ★★★☆☆ |
| decembrie | 3° | -3° | 68 mm | ★★☆☆☆ |
Climă type: Continental. Sursă: Open-Meteo archive (ERA5).
Recent extremes in Cook County
Ridicatest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Cook County compares cu 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 |
Cea mai bună perioadă Cook County
Go in mai, iunie, august, septembrie and octombrie. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: ianuarie, februarie and decembrie - expect the least comfortable mix of heat, cold or rain.
What this means for Cook County
Today is about average for octombrie. The forecast high of 19°C is in line cu the 18°C typical for this month.
Ploaie 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 iunie și august.
The gap between the warmest and coldest month averages 29°C.
What și pack, what și skip
- Layers - the daily swing is 16°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid ianuarie, februarie and decembrie - historically the least comfortable months here.
Rezumat
Cook County is a county in Illinois. Cook County is a county in the United States. Are o populație de aproximativ 5.1 million.
Acum sunt 13°C (56°F) in Cook County cu senin. Temperatura resimțită este 12°C. Astăzi temperaturile variază între 7°C și 19°C. Probabilitatea de precipitații este de 0%. Sightseeing conditions score 9.3/10 - excelent — pleacă acum.
Cea mai bună perioadă pentru a vizita Cook County is mai, iunie, august, septembrie and octombrie. Clima este continental. ianuarie, februarie and decembrie tend și be the least comfortable months. iulie is the warmest month cu average highs near 28°C, while ianuarie is the coldest cu 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.
Pe scurt. Today is about average for octombrie. The forecast high of 19°C is in line cu the 18°C typical for this month. The best window și be outside is roughly 1 PM și 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
| Tip | County |
|---|---|
| State | Illinois |
| Țară | Statele Unite ale Americii |
| Continent | America de Nord |
| Coordonate | 41°52′41.2″N 87°37′47.3″W (41.8781, -87.6298) |
| Populație | 5.100.000 |
| Ora locală | 11:25 AM (UTC-05:00) |
| Best months | mai, iunie, august, septembrie and octombrie |
| Climă | Continental |
Vreme map for Cook County
Animated model layers. Pick a layer și load it.
Animated layers by Vânty. 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.
Climă 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 America de Nord.
What is the weather like in Cook County acum?
It is currently 13°C (56°F) cu senin. Umiditate is 79% and wind is 11 km/h.
When is the best time și visit Cook County?
mai, iunie, august, septembrie and octombrie offer the most comfortable conditions in Cook County, which has a continental climate. ianuarie, februarie and decembrie 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 11:25 AM.
How many people live in Cook County?
Cook County has a population of approximately 5.1 million.
What is the nearest airport și Cook County?
The closest airports are O'Hare International Airport (ORD), 25 km away.
What are the top things și 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. |
|---|---|
| Prognoză and observations | Open-Meteo (ECMWF and national models). |
| Calitatea aerului and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climă averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Vreme 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 octombrie 24, 2026 at 11:25 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
