Cook County 氣候 and Average 天氣
氣候 of Cook County: average temperatures, rainfall and seasons month by month.
氣候 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 | ★★☆☆☆ |
氣候 type: 洲al. 來源： 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，天氣為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 |
最佳旅遊時間 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 slightly warmer than average for 十月. The forecast high of 22°C is 3.6°C above 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 13°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. 人口約為5.1 million.
目前氣溫為13°C (55°F) in Cook County，天氣為晴朗. 體感溫度為11°C. 今天氣溫介於9°C至22°C. 降雨機率為1%. Sightseeing conditions score 9.3/10 - 極佳 — 現在適合出發.
最佳旅遊時間是Cook County is 五月, 六月, 八月, 九月 and 十月. 氣候為continental. 一月, 二月 and 十二月 tend至be the least comfortable months. 七月 is the warmest month，天氣為average highs near 28°C, while 一月 is the coldest，天氣為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.
簡單來說。 Today is slightly warmer than average for 十月. The forecast high of 22°C is 3.6°C above the 18°C typical for this month. The best window至be outside is roughly 10 AM至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
天氣 map for Cook County
Animated model layers. Pick a layer至load it.
Animated layers by 風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.
氣候 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現在?
It is currently 13°C (55°F)，天氣為晴朗. 濕度 is 71% and wind is 8 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 11:33 PM.
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. |
|---|---|
| 預報 and observations | Open-Meteo (ECMWF and national models). |
| 空氣品質 and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| 氣候 averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National 天氣 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 25, 2026 at 11:33 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
