Cook County Veður Spá
Cook County weather: 12°C, skýjað. Á klukkustund forecast, 14-day outlook, UV, air quality and the best time til visit.
Snjór forecast for Cook County
No snow is in the current forecast window for Cook County.
0 of the next 16 nights are forecast til reach freezing.
Historically, average lows drop below freezing in janúar, febrúar and desember.
16-day forecast for Cook County
Hæst / Lægst; Úrkoma; UV
| Dagur | Aðstæður | Hæst / Lægst | Úrkoma | Vindur | UV |
|---|---|---|---|---|---|
| þri., okt 27 | ☁️ Skýjað | 18° / 12° | 6% | 16 km/h | 3 |
| mið., okt 28 | ☁️ Skýjað | 23° / 10° | 3% | 17 km/h | 4 |
| fim., okt 29 | 🌦️ Drizzle | 19° / 14° | 14% · 2 mm | 19 km/h | 2 |
| fös., okt 30 | ☁️ Skýjað | 14° / 12° | 21% | 15 km/h | 3 |
| lau., okt 31 | 🌦️ Light drizzle | 16° / 13° | 34% · 1 mm | 18 km/h | 2 |
| sun., nóv 1 | 🌦️ Drizzle | 14° / 12° | 44% · 5 mm | 15 km/h | 0 |
| mán., nóv 2 | ☁️ Skýjað | 14° / 13° | 38% | 16 km/h | 1 |
| þri., nóv 3 | ☁️ Skýjað | 14° / 12° | 48% | 23 km/h | 2 |
| mið., nóv 4 | 🌦️ Lítil rigning | 12° / 11° | 46% · 6 mm | 24 km/h | 1 |
| fim., nóv 5 | 🌦️ Drizzle | 12° / 11° | 31% · 11 mm | 23 km/h | 1 |
| fös., nóv 6 | 🌦️ Light drizzle | 12° / 10° | 13% · 3 mm | 26 km/h | 1 |
| lau., nóv 7 | 🌦️ Light drizzle | 11° / 9° | 29% · 0 mm | 16 km/h | 3 |
| sun., nóv 8 | ☁️ Skýjað | 14° / 7° | 26% | 14 km/h | 3 |
| mán., nóv 9 | 🌦️ Lítil rigning | 15° / 9° | 23% · 5 mm | 26 km/h | 2 |
| þri., nóv 10 | ☁️ Skýjað | 9° / 4° | 19% | 23 km/h | 1 |
| mið., nóv 11 | ☁️ Skýjað | 6° / 1° | 30% | 19 km/h | 3 |
Loftslag in Cook County month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Mánuður | Avg high | Avg low | Rigningfall | Rating |
|---|---|---|---|---|
| janúar | -2° | -8° | 73 mm | ★★☆☆☆ |
| febrúar | 4° | -4° | 19 mm | ★★★☆☆ |
| mars | 11° | 1° | 103 mm | ★★★☆☆ |
| apríl | 15° | 6° | 113 mm | ★★★☆☆ |
| maí | 20° | 11° | 68 mm | ★★★★☆ |
| júní | 26° | 18° | 126 mm | ★★★★☆ |
| júlí | 28° | 20° | 127 mm | ★★★★☆ |
| ágúst | 27° | 19° | 116 mm | ★★★★☆ |
| september | 24° | 17° | 74 mm | ★★★★☆ |
| október | 18° | 10° | 79 mm | ★★★★☆ |
| nóvember | 10° | 3° | 68 mm | ★★★☆☆ |
| desember | 3° | -3° | 68 mm | ★★☆☆☆ |
Loftslag type: Heimsálfaal. Heimild: Open-Meteo archive (ERA5).
What til pack, what til skip
- Layers - the daily swing is 13°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid janúar, febrúar and desember - historically the least comfortable months here.
Sjá spá fyrir Cook County eftir tímabili
Cook County weather - more answers
Explore Cook County
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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 Norður-Ameríka.
What is the weather like in Cook County núna?
It is currently 12°C (54°F) með skýjað. Raki is 95% and wind is 14 km/h.
When is the best time til visit Cook County?
maí, júní, ágúst, september and október offer the most comfortable conditions in Cook County, which has a continental climate. janúar, febrúar and desember 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 8:35 PM.
How many people live in Cook County?
Cook County has a population of approximately 5.1 million.
What is the nearest airport til Cook County?
The closest airports are O'Hare International Airport (ORD), 25 km away.
What are the top things til 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. |
|---|---|
| Spá and observations | Open-Meteo (ECMWF and national models). |
| Loftgæði and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Loftslag averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Veður 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 október 27, 2026 at 8:35 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
