Chicago 氣候 and Average 天氣
氣候 of Chicago: average temperatures, rainfall and seasons month by month.
氣候 in Chicago 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 Chicago
高est and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Chicago compares，天氣為nearby places
Annual averages, and the difference against Chicago.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Cook County | 0 km | 11°C | about the same | 1034 mm |
| Indiana Dunes National Park | 54 km | 11°C | about the same | 1110 mm |
| Starved Rock State Park | 129 km | 12°C | +1°C warmer | 1052 mm |
| Milwaukee | 131 km | 10°C | 1°C cooler | 901 mm |
| Wisconsin | 197 km | 10°C | 2°C cooler | 888 mm |
氣候 by airport in Chicago
1 airports mapped in this atlas
氣候 by district in Chicago
2 districts and neighborhoods mapped in this atlas
氣候 by zip / postal code in Chicago
1 zip and postal codes mapped in this atlas
氣候 by area code in Chicago
1 area codes mapped in this atlas
最佳旅遊時間 Chicago
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 Chicago
Today is about average for 十月. The forecast high of 17°C is in line，天氣為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
- 週日glasses, a brimmed hat and SPF 30+
- Layers - the daily swing is 15°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
Chicago is a city in Illinois. Chicago is known for Architecture, deep-dish and lakefront. 人口約為2.7 million.
目前氣溫為11°C (52°F) in Chicago，天氣為晴朗. 體感溫度為8°C. 今天氣溫介於11°C至17°C. 降雨機率為3%. Sightseeing conditions score 8.8/10 - 極佳 — 現在適合出發.
最佳旅遊時間是Chicago 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 about average for 十月. The forecast high of 17°C is in line，天氣為the 18°C typical for this month. The best window至be outside is roughly 2 PM至5 PM, when temperature, rain chance and wind line up best. stargazing is the strongest bet in Chicago today at 9.9/10. 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 Chicago
天氣 map for Chicago
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 Chicago
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 Chicago?
Chicago is a city in Illinois. Its coordinates are 41.8781, -87.6298. It lies in 北美洲.
What is the weather like in Chicago現在?
It is currently 11°C (52°F)，天氣為晴朗. 濕度 is 73% and wind is 11 km/h.
When is the best time至visit Chicago?
五月, 六月, 八月, 九月 and 十月 offer the most comfortable conditions in Chicago, 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 Chicago in?
Chicago observes America/Chicago (UTC-05:00). The local time is 5:52 AM.
How many people live in Chicago?
Chicago has a population of approximately 2.7 million.
What is the nearest airport至Chicago?
The closest airports are O'Hare International Airport (ORD), 25 km away.
What are the top things至do in Chicago?
Popular options include Indiana Dunes National Park, Starved Rock State Park and Lake Michigan.
What places are in Chicago?
Chicago covers 5 places in this atlas, including O'Hare International Airport, The Loop, Wicker Park, ZIP Code 60601 and Area Code 312.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (cities-us) - 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 3, 2026 at 5:52 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
