Chicago Klimat and Average Väder
Klimat of Chicago: average temperatures, rainfall and seasons month by month.
Klimat in Chicago month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Månad | Avg high | Avg low | Regnfall | Rating |
|---|---|---|---|---|
| januari | -2° | -8° | 73 mm | ★★☆☆☆ |
| februari | 4° | -4° | 19 mm | ★★★☆☆ |
| mars | 11° | 1° | 103 mm | ★★★☆☆ |
| april | 15° | 6° | 113 mm | ★★★☆☆ |
| maj | 20° | 11° | 68 mm | ★★★★☆ |
| juni | 26° | 18° | 126 mm | ★★★★☆ |
| juli | 28° | 20° | 127 mm | ★★★★☆ |
| augusti | 27° | 19° | 116 mm | ★★★★☆ |
| september | 24° | 17° | 74 mm | ★★★★☆ |
| oktober | 18° | 10° | 79 mm | ★★★★☆ |
| november | 10° | 3° | 68 mm | ★★★☆☆ |
| december | 3° | -3° | 68 mm | ★★☆☆☆ |
Klimat type: Kontinental. Källa: Open-Meteo archive (ERA5).
Recent extremes in Chicago
Högest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Chicago compares med 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 |
Klimat by airport in Chicago
1 airports mapped in this atlas
Klimat by district in Chicago
2 districts and neighborhoods mapped in this atlas
Klimat by zip / postal code in Chicago
1 zip and postal codes mapped in this atlas
Klimat by area code in Chicago
1 area codes mapped in this atlas
Bästa tiden att besöka Chicago
Go in maj, juni, augusti, september and oktober. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: januari, februari and december - expect the least comfortable mix of heat, cold or rain.
What this means for Chicago
Today is slightly cooler than average for oktober. The forecast high of 16°C is 1.9°C below the 18°C typical for this month.
Regn 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 juni och augusti.
The gap between the warmest and coldest month averages 29°C.
What och pack, what och skip
- sönglasses, a brimmed hat and SPF 30+
- Layers - the daily swing is 20°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid januari, februari and december - historically the least comfortable months here.
Sammanfattning
Chicago is a city in Illinois. Chicago is known for Architecture, deep-dish and lakefront. Befolkningen är cirka 2.7 million.
Just nu är det 9°C (49°F) in Chicago med klart. Det känns som 7°C. I dag varierar temperaturen mellan 8°C och 16°C. Risken för nederbörd är 0%. Sightseeing conditions score 8.7/10 - utmärkt — åk nu.
Bästa tiden att besöka Chicago is maj, juni, augusti, september and oktober. Klimatet är continental. januari, februari and december tend och be the least comfortable months. juli is the warmest month med average highs near 28°C, while januari is the coldest med 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.
Enkelt förklarat. Today is slightly cooler than average for oktober. The forecast high of 16°C is 1.9°C below the 18°C typical for this month. The best window och be outside is roughly 12 PM och 3 PM, when temperature, rain chance and wind line up best. stargazing is the strongest bet in Chicago 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 Chicago
| Typ | City |
|---|---|
| State | Illinois |
| Land | USA |
| Kontinent | Nordamerika |
| Koordinater | 41°52′41.2″N 87°37′47.3″W (41.8781, -87.6298) |
| Befolkning | 2.700.000 |
| Known for | Architecture, deep-dish and lakefront |
| Lokal tid | 1:18 AM (UTC-05:00) |
| Best months | maj, juni, augusti, september and oktober |
| Klimat | Kontinental |
Väder map for Chicago
Animated model layers. Pick a layer och load it.
Animated layers by Vindy. 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.
Klimat 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 Nordamerika.
What is the weather like in Chicago just nu?
It is currently 9°C (49°F) med klart. Luftfuktighet is 71% and wind is 10 km/h.
When is the best time och visit Chicago?
maj, juni, augusti, september and oktober offer the most comfortable conditions in Chicago, which has a continental climate. januari, februari and december 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 1:18 AM.
How many people live in Chicago?
Chicago has a population of approximately 2.7 million.
What is the nearest airport och Chicago?
The closest airports are O'Hare International Airport (ORD), 25 km away.
What are the top things och 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. |
|---|---|
| Prognos and observations | Open-Meteo (ECMWF and national models). |
| Luftkvalitet and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Klimat averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Väder 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 oktober 5, 2026 at 1:18 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
