Cook County 气候 and Average 天气
气候 of Cook County: average temperatures, rainfall and seasons month by month.
气候 in Cook County month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| 月份 | Avg high | Avg low | 雨fall | Rating |
|---|---|---|---|---|
| 一月 | -2° | -8° | 73 mm | ★★☆☆☆ |
| 二月 | 4° | -4° | 19 mm | ★★★☆☆ |
| 三月 | 11° | 1° | 103 mm | ★★★☆☆ |
| 四月 | 15° | 6° | 113 mm | ★★★☆☆ |
| 五月 | 20° | 11° | 68 mm | ★★★★☆ |
| 六月 | 26° | 18° | 126 mm | ★★★★☆ |
| 七月 | 28° | 20° | 127 mm | ★★★★☆ |
| 八月 | 27° | 19° | 116 mm | ★★★★☆ |
| 九月 | 24° | 17° | 74 mm | ★★★★☆ |
| 十月 | 18° | 10° | 79 mm | ★★★★☆ |
| 十一月 | 10° | 3° | 68 mm | ★★★☆☆ |
| 十二月 | 3° | -3° | 68 mm | ★★☆☆☆ |
气候 type: 大洲al. 来源： Open-Meteo archive (ERA5).
Recent extremes in Cook County
高est and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Cook County compares，天气为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 |
最佳旅游时间 Cook County
Go in 五月, 六月, 八月, 九月 and 十月. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: 一月, 二月 and 十二月 - expect the least comfortable mix of heat, cold or rain.
What this means for Cook County
Today is about average for 十月. The forecast high of 19°C is in line，天气为the 18°C typical for this month.
雨 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 六月至八月.
The gap between the warmest and coldest month averages 29°C.
What至pack, what至skip
- Layers - the daily swing is 16°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid 一月, 二月 and 十二月 - historically the least comfortable months here.
摘要
Cook County is a county in Illinois. Cook County is a county in the United States. 人口约为5.1 million.
目前气温为13°C (56°F) in Cook County，天气为晴. 体感温度为12°C. 今天气温在7°C至19°C. 降水概率为0%. Sightseeing conditions score 9.3/10 - 极佳 — 现在适合出行.
最佳旅游时间是Cook County is 五月, 六月, 八月, 九月 and 十月. 气候为continental. 一月, 二月 and 十二月 tend至be the least comfortable months. 七月 is the warmest month，天气为average highs near 28°C, while 一月 is the coldest，天气为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.
简单来说。 Today is about average for 十月. The forecast high of 19°C is in line，天气为the 18°C typical for this month. The best window至be outside is roughly 1 PM至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
天气 map for Cook County
Animated model layers. Pick a layer至load it.
Animated layers by 风y. 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.
气候 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 北美洲.
What is the weather like in Cook County现在?
It is currently 13°C (56°F)，天气为晴. 湿度 is 79% and wind is 11 km/h.
When is the best time至visit Cook County?
五月, 六月, 八月, 九月 and 十月 offer the most comfortable conditions in Cook County, which has a continental climate. 一月, 二月 and 十二月 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 8:57 AM.
How many people live in Cook County?
Cook County has a population of approximately 5.1 million.
What is the nearest airport至Cook County?
The closest airports are O'Hare International Airport (ORD), 25 km away.
What are the top things至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. |
|---|---|
| 预报 and observations | Open-Meteo (ECMWF and national models). |
| 空气质量 and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| 气候 averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National 天气 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 十月 24, 2026 at 8:57 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
