Illinois Veður Spá
Illinois weather: 13°C, clear. Á klukkustund forecast, 14-day outlook, UV, air quality and the best time til visit.
7-day forecast for Illinois
Hæst / Lægst; Úrkoma; UV
| Dagur | Aðstæður | Hæst / Lægst | Úrkoma | Vindur | UV |
|---|---|---|---|---|---|
| þri., okt 27 | ☁️ Skýjað | 23° / 9° | 13% | 17 km/h | 4 |
| mið., okt 28 | ☁️ Skýjað | 26° / 11° | 2% | 20 km/h | 4 |
| fim., okt 29 | ⛅ Skýjað að hluta | 27° / 15° | 6% · 0 mm | 16 km/h | 4 |
| fös., okt 30 | 🌦️ Drizzle | 23° / 13° | 21% · 1 mm | 19 km/h | 4 |
| lau., okt 31 | 🌦️ Lítil rigning | 20° / 15° | 19% · 2 mm | 16 km/h | 1 |
| sun., nóv 1 | 🌧️ Rigning | 17° / 14° | 45% · 12 mm | 21 km/h | 1 |
| mán., nóv 2 | 🌦️ Light drizzle | 17° / 13° | 44% · 0 mm | 14 km/h | 2 |
Weekend outlook
🌦️ 20° / 15°
Lítil rigning · 19% rain · wind 16 km/h
🌧️ 17° / 14°
Rigning · 45% rain · wind 21 km/h
Is today a good day til visit?
Activity scores from 0 til 10 based on temperature, rain, wind, sun and visibility.
What til pack, what til skip
- sun.glasses, a brimmed hat and SPF 30+
- Layers - the daily swing is 18°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 janúar, febrúar and desember - historically the least comfortable months here.
Active alerts for Illinois
Derived from the forecast. No official alert feed is wired for this country yet.
Sjá spá fyrir Illinois eftir tímabili
Illinois weather - more answers
Explore Illinois
Every topic we hold for this place, and the same topic for the places around it.
Veður for related places
Frequently asked questions
Where is Illinois?
Illinois is a state in Bandaríkin. Its coordinates are 39.7817, -89.6501. It lies in Norður-Ameríka.
What is the weather like in Illinois núna?
It is currently 13°C (56°F) með clear. Raki is 70% and wind is 8 km/h.
When is the best time til visit Illinois?
ágúst, september and október offer the most comfortable conditions in Illinois, which has a continental climate. janúar, febrúar and desember are usually the hardest months for outdoor plans.
What time zone is Illinois in?
Illinois observes America/Chicago (UTC-05:00). The local time is 2:42 AM.
How many people live in Illinois?
Illinois has a population of approximately 12.6 million.
What is the nearest airport til Illinois?
The closest airports are O'Hare International Airport (ORD), 284 km away and Nashville International Airport (BNA), 483 km away.
What are the top things til do in Illinois?
Popular options include Starved Rock State Park, Lake Michigan, Gateway Arch National Park and Indiana Dunes National Park.
What places are in Illinois?
Illinois covers 4 places in this atlas, including Chicago, Starved Rock State Park, Cook County and Lake Michigan.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (us-states) - 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 28, 2026 at 2:42 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
