Illinois Wetter Vorhersage
Illinois weather: 17°C, klar. Stündlich forecast, 14-day outlook, UV, air quality and the best time und visit.
Risk assessment for Illinois
Derived from the current forecast window – not an official warning.
Peak gusts of 57 km/h and 0 thunderstorm days in the next 16 days.
Wettest single day forecast at 19 mm, 28 mm across the window. Flash flooding risk rises sharply above 50 mm in a day.
16-day Vorhersage für Illinois
Tägliche Höchst- und Tiefstwerte, Niederschlag und UV.
| Tag | Bedingungen | Höchst / Tiefst | Niederschlag | Wind | UV |
|---|---|---|---|---|---|
| Mo., Okt 5 | ☀️ Klarer Himmel | 24° / 7° | 0% | 9 km/h | 5 |
| Di., Okt 6 | ☀️ Klarer Himmel | 26° / 9° | 1% | 14 km/h | 5 |
| Mi., Okt 7 | ☁️ Bedeckt | 30° / 15° | 1% | 21 km/h | 5 |
| Do., Okt 8 | ☁️ Bedeckt | 25° / 14° | 1% | 14 km/h | 5 |
| Fr., Okt 9 | ☁️ Bedeckt | 24° / 12° | 4% | 15 km/h | 4 |
| Sa., Okt 10 | ☁️ Bedeckt | 25° / 15° | 1% | 21 km/h | 4 |
| So., Okt 11 | ☁️ Bedeckt | 26° / 16° | 4% | 12 km/h | 4 |
| Mo., Okt 12 | ☁️ Bedeckt | 31° / 16° | 9% | 20 km/h | 4 |
| Di., Okt 13 | ☁️ Bedeckt | 31° / 19° | 22% | 29 km/h | 5 |
| Mi., Okt 14 | 🌦️ Leichte Schauer | 24° / 19° | 24% · 6 mm | 33 km/h | 2 |
| Do., Okt 15 | 🌦️ Leichte Schauer | 20° / 17° | 18% · 19 mm | 19 km/h | 0 |
| Fr., Okt 16 | 🌦️ Nieselregen | 22° / 14° | 20% · 3 mm | 34 km/h | 4 |
| Sa., Okt 17 | ⛅ Teilweise bewölkt | 13° / 6° | 19% | 29 km/h | 4 |
| So., Okt 18 | ☁️ Bedeckt | 15° / 4° | 11% | 21 km/h | 4 |
| Mo., Okt 19 | ☁️ Bedeckt | 21° / 9° | 6% | 26 km/h | 4 |
| Di., Okt 20 | ☀️ Klarer Himmel | 25° / 10° | 6% | 20 km/h | 4 |
What this means for Illinois
Today is slightly warmer than average for Oktober. The forecast high of 24°C is 3.5°C above the 20°C typical for this month.
Regen is very unlikely today – plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in Juni und August.
The gap between the warmest and coldest month averages 29°C.
Vorhersage für Illinois nach Zeitraum ansehen
Illinois weather – more answers
Explore Illinois
Every topic we hold for this place, and the same topic for the places around it.
Wetter for related places
Frequently asked questions
Where is Illinois?
Illinois is a state in Vereinigte Staaten. Its coordinates are 39.7817, -89.6501. It lies in Nordamerika.
What is the weather like in Illinois jetzt?
It is currently 17°C (62°F) mit klar. Luftfeuchtigkeit is 45% and wind is 5 km/h.
When is the best time und visit Illinois?
August, September and Oktober offer the most comfortable conditions in Illinois, which has a continental climate. Januar, Februar and Dezember are usually the hardest months for outdoor plans.
What time zone is Illinois in?
Illinois observes America/Chicago (UTC-05:00). The Ortszeit is 11:13 PM.
How many people live in Illinois?
Illinois has a population of approximately 12.6 million.
What is the nearest airport und 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 und 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. |
|---|---|
| Vorhersage and observations | Open-Meteo (ECMWF and national models). |
| Luftqualität 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 Wetter 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 5, 2026 at 11:13 PM Ortszeit. Live blocks refresh every 15 minutes; climate averages monthly.
