Chicago Vær Værmelding
Chicago weather: 17°C, overskyet. Time for time forecast, 14-day outlook, UV, air quality and the best time til visit.
Klima in Chicago month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Måned | Avg high | Avg low | Regnfall | Rating |
|---|---|---|---|---|
| januar | -2° | -8° | 73 mm | ★★☆☆☆ |
| februar | 4° | -4° | 19 mm | ★★★☆☆ |
| mars | 11° | 1° | 103 mm | ★★★☆☆ |
| april | 15° | 6° | 113 mm | ★★★☆☆ |
| mai | 20° | 11° | 68 mm | ★★★★☆ |
| juni | 26° | 18° | 126 mm | ★★★★☆ |
| juli | 28° | 20° | 127 mm | ★★★★☆ |
| august | 27° | 19° | 116 mm | ★★★★☆ |
| september | 24° | 17° | 74 mm | ★★★★☆ |
| oktober | 18° | 10° | 79 mm | ★★★★☆ |
| november | 10° | 3° | 68 mm | ★★★☆☆ |
| desember | 3° | -3° | 68 mm | ★★☆☆☆ |
Klima type: Kontinental. Kilde: Open-Meteo archive (ERA5).
Beste tid å besøke Chicago
Go in mai, juni, august, september and oktober. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: januar, februar and desember - expect the least comfortable mix of heat, cold or rain.
Recent extremes in Chicago
Høyest 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 |
What til pack, what til skip
- Layers - the daily swing is 13°C, so mornings feel nothing like afternoons
- A packable rain shell - 2 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid januar, februar and desember - historically the least comfortable months here.
Se prognosen for Chicago etter tidsintervall
Chicago weather - more answers
Explore Chicago
Every topic we hold for this place, and the same topic for the places around it.
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Frequently asked questions
Where is Chicago?
Chicago is a city in Illinois. Its coordinates are 41.8781, -87.6298. It lies in Nord-Amerika.
What is the weather like in Chicago akkurat nå?
It is currently 17°C (63°F) med overskyet. Luftfuktighet is 94% and wind is 10 km/h.
When is the best time til visit Chicago?
mai, juni, august, september and oktober offer the most comfortable conditions in Chicago, which has a continental climate. januar, februar and desember 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 9:07 PM.
How many people live in Chicago?
Chicago has a population of approximately 2.7 million.
What is the nearest airport til Chicago?
The closest airports are O'Hare International Airport (ORD), 25 km away.
What are the top things til 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. |
|---|---|
| Værmelding and observations | Open-Meteo (ECMWF and national models). |
| Luftkvalitet and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Klima averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Vær 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 september 30, 2026 at 9:07 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
