Cook County Väder Prognos
Cook County weather: 17°C, mulet. Varje timme forecast, 14-day outlook, UV, air quality and the best time och visit.
Snö forecast for Cook County
No snow is in the current forecast window for Cook County.
0 of the next 16 nights are forecast och reach freezing.
Historically, average lows drop below freezing in januari, februari and december.
16-day forecast for Cook County
Max / Min; Nederb.; UV
| Dag | Förhållanden | Max / Min | Nederb. | Vind | UV |
|---|---|---|---|---|---|
| tor, okt 1 | 🌧️ Heavy rain | 24° / 17° | 87% · 25 mm | 19 km/h | 1 |
| fre, okt 2 | ☁️ Mulet | 15° / 13° | 25% | 21 km/h | 5 |
| lör, okt 3 | 🌤️ Mest klart | 18° / 13° | 0% | 16 km/h | 5 |
| sön, okt 4 | ☁️ Mulet | 22° / 13° | 1% | 18 km/h | 5 |
| mån, okt 5 | ☁️ Mulet | 15° / 11° | 0% | 19 km/h | 5 |
| tis, okt 6 | ⛅ Delvis molnigt | 18° / 9° | 0% | 14 km/h | 5 |
| ons, okt 7 | 🌦️ Light drizzle | 20° / 13° | 7% · 1 mm | 23 km/h | 3 |
| tor, okt 8 | 🌤️ Mest klart | 17° / 13° | 3% | 14 km/h | 5 |
| fre, okt 9 | ☁️ Mulet | 24° / 12° | 2% | 23 km/h | 4 |
| lör, okt 10 | 🌦️ Light drizzle | 27° / 18° | 8% · 0 mm | 27 km/h | 4 |
| sön, okt 11 | 🌦️ Light drizzle | 20° / 14° | 15% · 0 mm | 19 km/h | 4 |
| mån, okt 12 | ⛅ Delvis molnigt | 21° / 12° | 19% | 21 km/h | 4 |
| tis, okt 13 | ☁️ Mulet | 18° / 13° | 19% | 14 km/h | 4 |
| ons, okt 14 | ☀️ Klart | 25° / 14° | 19% | 25 km/h | 4 |
| tor, okt 15 | 🌤️ Mest klart | 22° / 12° | 12% | 24 km/h | 4 |
| fre, okt 16 | ☀️ Klart | -- / -- | 12% | -- | — |
Klimat in Cook County 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).
What och pack, what och skip
- Layers - the daily swing is 15°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid januari, februari and december - historically the least comfortable months here.
Se prognosen för Cook County per tidsintervall
Cook County weather - more answers
Explore Cook County
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 Cook County?
Cook County is a county in Illinois. Its coordinates are 41.8781, -87.6298. It lies in Nordamerika.
What is the weather like in Cook County just nu?
It is currently 17°C (62°F) med mulet. Luftfuktighet is 90% and wind is 7 km/h.
When is the best time och visit Cook County?
maj, juni, augusti, september and oktober offer the most comfortable conditions in Cook County, which has a continental climate. januari, februari and december 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 9:09 AM.
How many people live in Cook County?
Cook County has a population of approximately 5.1 million.
What is the nearest airport och Cook County?
The closest airports are O'Hare International Airport (ORD), 25 km away.
What are the top things och 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. |
|---|---|
| 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 1, 2026 at 9:09 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
