Illinois Väder Prognos
Illinois weather: 24°C, mulet. Varje timme forecast, 14-day outlook, UV, air quality and the best time och visit.
7-day forecast for Illinois
Max / Min; Nederb.; UV
| Dag | Förhållanden | Max / Min | Nederb. | Vind | UV |
|---|---|---|---|---|---|
| tor, okt 1 | 🌧️ Regn | 31° / 18° | 73% · 15 mm | 23 km/h | 3 |
| fre, okt 2 | 🌦️ Duggregn | 19° / 12° | 58% · 1 mm | 19 km/h | 5 |
| lör, okt 3 | ☁️ Mulet | 23° / 9° | 0% | 15 km/h | 5 |
| sön, okt 4 | ⛅ Delvis molnigt | 24° / 12° | 0% | 18 km/h | 5 |
| mån, okt 5 | ☁️ Mulet | 19° / 8° | 0% | 17 km/h | 5 |
| tis, okt 6 | 🌤️ Mest klart | 20° / 5° | 0% | 15 km/h | 5 |
| ons, okt 7 | ☁️ Mulet | 26° / 10° | 3% | 18 km/h | 5 |
Weekend outlook
☁️ 23° / 9°
Mulet · 0% rain · wind 15 km/h
⛅ 24° / 12°
Delvis molnigt · 0% rain · wind 18 km/h
Is today a good day och visit?
Activity scores from 0 och 10 based on temperature, rain, wind, sun and visibility.
What och pack, what och skip
- Lightweight, light-coloured clothing and a refillable water bottle
- sönglasses, a brimmed hat and SPF 30+
- Layers - the daily swing is 26°C, so mornings feel nothing like afternoons
- A packable rain shell - 2 of the next 7 days carry a real chance of rain
- Avoid exposed ridgelines, small boats and rooftop viewpoints while gusts stay above 51 km/h.
- If your dates are flexible, avoid januari, februari and december - historically the least comfortable months here.
Se prognosen för Illinois per tidsintervall
Illinois weather - more answers
Explore Illinois
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 Illinois?
Illinois is a state in USA. Its coordinates are 39.7817, -89.6501. It lies in Nordamerika.
What is the weather like in Illinois just nu?
It is currently 24°C (75°F) med mulet. Luftfuktighet is 52% and wind is 10 km/h.
When is the best time och visit Illinois?
augusti, september and oktober offer the most comfortable conditions in Illinois, which has a continental climate. januari, februari and december 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 2:10 AM.
How many people live in Illinois?
Illinois has a population of approximately 12.6 million.
What is the nearest airport och 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 och 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. |
|---|---|
| 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 2:10 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
