Cook County 기후 and Average 날씨
기후 of Cook County: average temperatures, rainfall and seasons month by month.
기후 in Cook County month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| 월 | Avg high | Avg low | 비fall | Rating |
|---|---|---|---|---|
| 1월 | -2° | -8° | 73 mm | ★★☆☆☆ |
| 2월 | 4° | -4° | 19 mm | ★★★☆☆ |
| 3월 | 11° | 1° | 103 mm | ★★★☆☆ |
| 4월 | 15° | 6° | 113 mm | ★★★☆☆ |
| 5월 | 20° | 11° | 68 mm | ★★★★☆ |
| 6월 | 26° | 18° | 126 mm | ★★★★☆ |
| 7월 | 28° | 20° | 127 mm | ★★★★☆ |
| 8월 | 27° | 19° | 116 mm | ★★★★☆ |
| 9월 | 24° | 17° | 74 mm | ★★★★☆ |
| 10월 | 18° | 10° | 79 mm | ★★★★☆ |
| 11월 | 10° | 3° | 68 mm | ★★★☆☆ |
| 12월 | 3° | -3° | 68 mm | ★★☆☆☆ |
기후 type: 대륙al. 출처: Open-Meteo archive (ERA5).
Recent extremes in Cook County
높음est and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Cook County compares이며 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 |
방문하기 좋은 시기 Cook County
Go in 5월, 6월, 8월, 9월 and 10월. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: 1월, 2월 and 12월 - expect the least comfortable mix of heat, cold or rain.
What this means for Cook County
Today is slightly warmer than average for 10월. The forecast high of 20°C is 2.4°C above the 18°C typical for this month.
비 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 6월에서 8월.
The gap between the warmest and coldest month averages 29°C.
What에서 pack, what에서 skip
- Layers - the daily swing is 16°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid 1월, 2월 and 12월 - historically the least comfortable months here.
요약
Cook County is a county in Illinois. Cook County is a county in the United States. 인구는 약 5.1 million.
현재 기온은 12°C (54°F) in Cook County이며 맑음. 체감온도는 11°C. 오늘 기온은 6°C에서 20°C. 강수 확률은 0%. Sightseeing conditions score 9.4/10 - 매우 좋음 — 지금 출발하세요.
방문하기 가장 좋은 시기는 Cook County is 5월, 6월, 8월, 9월 and 10월. 기후는 continental. 1월, 2월 and 12월 tend에서 be the least comfortable months. 7월 is the warmest month이며 average highs near 28°C, while 1월 is the coldest이며 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.
쉽게 말하면. Today is slightly warmer than average for 10월. The forecast high of 20°C is 2.4°C above the 18°C typical for this month. The best window에서 be outside is roughly 12 PM에서 3 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
날씨 map for Cook County
Animated model layers. Pick a layer에서 load it.
Animated layers by 바람y. 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.
기후 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 북아메리카.
What is the weather like in Cook County 현재?
It is currently 12°C (54°F)이며 맑음. 습도 is 79% and wind is 5 km/h.
When is the best time에서 visit Cook County?
5월, 6월, 8월, 9월 and 10월 offer the most comfortable conditions in Cook County, which has a continental climate. 1월, 2월 and 12월 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 12:37 AM.
How many people live in Cook County?
Cook County has a population of approximately 5.1 million.
What is the nearest airport에서 Cook County?
The closest airports are O'Hare International Airport (ORD), 25 km away.
What are the top things에서 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. |
|---|---|
| 예보 and observations | Open-Meteo (ECMWF and national models). |
| 대기질 and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| 기후 averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National 날씨 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 10월 22, 2026 at 12:37 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
